King Ali, profile picture
Uploaded byKing Ali
12,571 views

0610 w08 qp_o3 (2)

The document discusses changes made by CIE (Cambridge International Examinations) to some of their question papers for popular assessments. Specifically: 1. CIE uses different variants of question papers for assessments with large numbers of candidates, to maintain best practice in assessment. The question papers are closely related and have been established to provide equal standards of assessment. 2. For some components, there are now two variant question papers, mark schemes, and principal examiner reports, where previously there was only one. Only one variant is intended to be used within each country. 3. A diagram shows the relationship between the question papers, mark schemes, and principal examiner's reports for the variants. 4.

Downloaded 22 times
w w ap eP m e tr .X w om .c s er Location Entry Codes As part of CIE’s continual commitment to maintaining best practice in assessment, CIE uses different variants of some question papers for our most popular assessments with large and widespread candidature. The question papers are closely related and the relationships between them have been thoroughly established using our assessment expertise. All versions of the paper give assessment of equal standard. The content assessed by the examination papers and the type of questions is unchanged. This change means that for this component there are now two variant Question Papers, Mark Schemes and Principal Examiner’s Reports where previously there was only one. For any individual country, it is intended that only one variant is used. This document contains both variants which will give all Centres access to even more past examination material than is usually the case. The diagram shows the relationship between the Question Papers, Mark Schemes and Principal Examiners’ Reports that are available. Question Paper Mark Scheme Principal Examiner’s Report Introduction Introduction Introduction First variant Question Paper First variant Mark Scheme First variant Principal Examiner’s Report Second variant Question Paper Second variant Mark Scheme Second variant Principal Examiner’s Report Who can I contact for further information on these changes? Please direct any questions about this to CIE’s Customer Services team at: international@cie.org.uk The titles for the variant items should correspond with the table above, so that at the top of the first page of the relevant part of the document and on the header, it has the words: • First variant Question Paper / Mark Scheme / Principal Examiner’s Report • Second variant Question Paper / Mark Scheme / Principal Examiner’s Report or as appropriate.
First Variant Question Paper UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *7692322713* 0610/31 BIOLOGY October/November 2008 Paper 3 Extended 1 hour 15 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams or graphs. Do not use staples, paper clips, highlighters, glue or correction fluid. DO NOT WRITE IN ANY BARCODES. Answer all questions. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner's Use 1 2 3 4 5 Total This document consists of 13 printed pages and 3 blank pages. IB08 11_0610_31/7RP © UCLES 2008 [Turn over
2 1 The freshwater mussel, Margaritifera margaritifera, is a mollusc which lives in rivers and streams. When the mussel reproduces, gametes are released into the water and fertilisation takes place. The embryos, in the form of larvae, attach themselves to the gills of fish and develop there for a few months. The larvae then release themselves and grow in sand in the river, feeding by filtering food from the water. The number of mussels is falling due to human predation and the species is threatened with extinction. (a) The mussel belongs to the group known as the molluscs. State two features you would expect the mussel to have. 1. 2. [2] (b) Explain how the species name of the freshwater mussel can be distinguished from its genus. [1] (c) State the type of reproduction shown by the mussel. Explain your answer. type of reproduction explanation [2] (d) (i) Fish gills have the same function as lungs. Suggest one advantage to a mussel larva of attaching itself to fish gills. [1] (ii) The mussel develops on the fish gills. Define the term development. [1] © UCLES 2008 0610/31/O/N/08 For Examiner's Use
3 (e) The mussel is threatened with extinction. Name another organism which is also threatened with extinction and outline how it could be conserved. For Examiner's Use name of species outline of conservation [3] [Total: 10] © UCLES 2008 0610/31/O/N/08 [Turn over
4 2 Fig. 2.1 shows crop productivity for a range of plants but the bar graph is incomplete. 9.0 world average 8.0 highest yield 7.0 6.0 productivity per day of growing season / g per m2 5.0 4.0 3.0 2.0 1.0 0 wheat oats maize rice type of crop Fig. 2.1 © UCLES 2008 0610/31/O/N/08 potatoes sugar beet For Examiner's Use
5 (a) Complete Fig. 2.1 using the following data. crop productivity per day of growing season / g per m 2 world average potatoes For Examiner's Use highest yield 2.6 5.6 [2] (b) State which crop has (i) the highest average productivity, (ii) the greatest difference between the average yield and the highest yield. [2] (c) Outline how modern technology could be used to increase the productivity of a crop from the average yield to a high yield. [3] (d) When the yield is measured, dry mass is always used rather than fresh mass. Suggest why dry mass is a more reliable measurement than fresh mass. [1] © UCLES 2008 0610/31/O/N/08 [Turn over
6 (e) Maize is often used to feed cows, which are grown to provide meat for humans. Explain why it is more efficient for humans to eat maize rather than meat from cows that have been fed on maize. [3] (f) (i) Complete the equation for photosynthesis. light energy 6CO2 + 6H2O C6H12O6 + ................. [1] (ii) Describe how leaves are adapted to trap light. [2] (iii) With reference to water potential, explain how water is absorbed by roots. [3] (iv) Explain how photosynthesising cells obtain carbon dioxide. [2] [Total: 19] © UCLES 2008 0610/31/O/N/08 For Examiner's Use
7 3 Mycoprotein is similar to single cell protein and is sold as an alternative to meat such as beef. For Examiner's Use Table 3.1 shows the composition of mycoprotein and beef. Table 3.1 dry mass / g per 100 g nutrient mycoprotein protein uncooked beef 49.0 51.4 9.2 48.6 fibre (roughage) 19.5 0.0 carbohydrate 20.6 0.0 fat (a) (i) State two differences in composition between mycoprotein and beef. 1. 2. [2] (ii) Using data from Table 3.1, suggest two reasons why eating mycoprotein is better for health than eating beef. Explain your answers. reason 1 explanation reason 2 explanation [4] © UCLES 2008 0610/31/O/N/08 [Turn over
8 (b) (i) Calculate the dry mass of mycoprotein not represented by protein, fat, fibre or carbohydrate. Show your working. Answer g [2] (ii) Suggest one nutrient that this dry mass might contain. [1] (c) The antibiotic penicillin is produced by fungi that are grown in a fermenter, as shown in Fig. 3.1. The process is similar to the manufacture of enzymes. waste gases water out water jacket feedstock X extract mycoprotein air filtrate water in © UCLES 2008 Fig. 3.1 0610/31/O/N/08 For Examiner's Use
9 (i) Name the two raw materials likely to be present in the feedstock. For Examiner's Use 1. 2. [2] (ii) State the function of X. [1] (iii) Suggest the name of the main gas present in the waste gases. [1] (d) During the fermenting process, the temperature in the container would rise unless steps are taken to maintain a constant temperature. (i) Suggest a suitable temperature for the feedstock. [1] (ii) Explain why the temperature rises. [2] (iii) Explain why a constant temperature has to be maintained. [2] (iv) Using the information from Fig. 3.1, suggest how a constant temperature is maintained. [1] [Total: 19] © UCLES 2008 0610/31/O/N/08 [Turn over
10 4 A newspaper headline incorrectly stated, “The use of condoms can result in erectile dysfunction”. Erectile dysfunction is a medical problem which results in problems with sexual intercourse. Scientists are concerned that this incorrect statement could lead to an increase in HIV. (a) Describe the process of sexual intercourse in humans. [2] (b) Condoms are used as one form of birth control. (i) What name is used to describe this method of birth control? [1] (ii) Explain how a condom acts as a method of birth control. [2] (c) Some readers of the newspaper may believe the newspaper and stop using condoms during sexual intercourse. (i) Explain how a decrease in the use of condoms may lead to an increase in the incidence of HIV. [2] (ii) State two ways by which a person who does not have sexual intercourse might still become infected with HIV. 1. 2. © UCLES 2008 [2] 0610/31/O/N/08 For Examiner's Use
11 (iii) Explain why the immune system is less effective in a person with HIV. For Examiner's Use [3] (d) Another sexually transmitted disease is gonorrhoea. For this disease, state (i) one sign or symptom, (ii) one effect on the body, (iii) the treatment. [3] [Total: 15] © UCLES 2008 0610/31/O/N/08 [Turn over
12 5 Table 5.1 shows the energy reserves for skeletal muscles in an athlete. For Examiner's Use Table 5.1 time the reserve would last / min energy reserve mass / g energy / kJ walking marathon running blood glucose 3 48 4 1 liver glycogen 100 1660 86 20 muscle glycogen 350 5800 288 71 9000 337 500 15 500 4018 fat in skin (a) (i) Compare the effect of walking and marathon running on energy reserves. [2] (ii) Suggest which two energy reserves would be most readily available to muscles during exercise. 1. 2. [1] (iii) Underline the two food groups to which the energy reserves in Table 5.1 belong. protein mineral fibre fat carbohydrate [1] (iv) Calculate the energy per gram of glycogen. Show your working. energy = © UCLES 2008 0610/31/O/N/08 kJ [2]
13 (b) Suggest why athletes eat foods high in For Examiner's Use (i) proteins, during training; [1] (ii) carbohydrates, for three days before a marathon race. [2] (c) During a fast race (a 100 metre sprint), 95% of the energy comes from anaerobic respiration. During a marathon, only 2% of the energy comes from anaerobic respiration. (i) State the equation, in symbols, for anaerobic respiration in muscles. [2] (ii) Suggest and explain why a sprinter can use mainly anaerobic respiration during the race, while a marathon runner needs to use aerobic respiration. [4] (iii) Explain how, during a marathon race, the blood glucose concentration stays fairly constant, but the mass of glycogen in the liver decreases. [2] [Total: 17] © UCLES 2008 0610/31/O/N/08
14 BLANK PAGE 0610/31/O/N/08
15 BLANK PAGE 0610/31/O/N/08
16 BLANK PAGE Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. 0610/31/O/N/08
Second Variant Question Paper UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *3942584201* 0610/32 BIOLOGY October/November 2008 Paper 3 Extended 1 hour 15 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams or graphs. Do not use staples, paper clips, highlighters, glue or correction fluid. DO NOT WRITE IN ANY BARCODES. Answer all questions. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner's Use 1 2 3 4 5 Total This document consists of 15 printed pages and 1 blank page. IB08 11_0610_32/7RP © UCLES 2008 [Turn over
2 1 The freshwater mussel, Margaritifera margaritifera, is a mollusc which lives in rivers and streams. When the mussel reproduces, gametes are released into the water and fertilisation takes place. The embryos, in the form of larvae, attach themselves to the gills of fish and develop there for a few months. The larvae then release themselves and grow in sand in the river, feeding by filtering food from the water. The number of mussels is falling due to human predation and the species is threatened with extinction. (a) The mussel belongs to the group known as the molluscs. State two features you would expect the mussel to have. 1. 2. [2] (b) Explain how the species name of the freshwater mussel can be distinguished from its genus. [1] (c) State the type of reproduction shown by the mussel. Explain your answer. type of reproduction explanation [2] (d) (i) Fish gills have the same function as lungs. Suggest one advantage to a mussel larva of attaching itself to fish gills. [1] (ii) The mussel develops on the fish gills. Define the term development. [1] © UCLES 2008 0610/32/O/N/08 For Examiner's Use
3 (e) The mussel is threatened with extinction. Name another organism which is also threatened with extinction and outline how it could be conserved. For Examiner's Use name of species outline of conservation [3] [Total: 10] © UCLES 2008 0610/32/O/N/08 [Turn over
4 2 Fig. 2.1 shows the apparatus used to find the energy in a groundnut. For Examiner's Use Results of the experiment are shown in Table 2.1. thermometer boiling tube 25 cm3 water mounted needle burning groundnut Fig. 2.1 Table 2.1 mass of nut / g energy / J 0.3 15 1575 0.4 24 0.5 29 3045 0.6 34 3570 0.7 © UCLES 2008 increase in temperature / °C 44 4620 0610/32/O/N/08
5 (a) Describe how the apparatus could be used to obtain the data shown in Table 2.1. For Examiner's Use [5] (b) The energy released by a groundnut was calculated using the equation shown below. energy = volume of water × increase in temperature × 4.2 Calculate the energy released by a groundnut of mass 0.4 g. Show your working. energy = © UCLES 2008 0610/32/O/N/08 J [2] [Turn over
6 (c) Fig. 2.2 shows a graph of the relationship between mass of groundnut and the energy it contains. The graph is incomplete. 5000 4000 3000 2000 1000 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Fig. 2.2 (i) Complete the graph, by adding the missing energy value, calculated in (b), drawing a line through the points and labelling the axes. [3] (ii) Describe the trend shown by the graph. [1] © UCLES 2008 0610/32/O/N/08 For Examiner's Use
7 (d) (i) The experimental results show that a groundnut of mass 0.5 g contains 3045 J energy. For Examiner's Use Calculate the energy released from 100 g of these groundnuts. energy in 100 g = J [1] (ii) Official figures state that 100 g of groundnuts contain 2 428 000 J energy. With reference to the apparatus in Fig. 2.1, suggest two reasons why the experimental energy value for 100 g of groundnuts is much lower than the official energy value. 1. 2. [2] (e) Groundnuts plants are legumes. Describe how a groundnut plant obtains the nitrogen-containing compounds that it needs to make proteins. [5] [Total:19] © UCLES 2008 0610/32/O/N/08 [Turn over
8 3 Mycoprotein is similar to single cell protein and is sold as an alternative to meat such as beef. Table 3.1 shows the composition of mycoprotein and beef. Table 3.1 dry mass / g per 100 g nutrient mycoprotein protein uncooked beef 49.0 51.4 9.2 48.6 fibre (roughage) 19.5 0.0 carbohydrate 20.6 0.0 fat (a) (i) State two differences in composition between mycoprotein and beef. 1. 2. [2] (ii) Using data from Table 3.1, suggest two reasons why eating mycoprotein is better for health than eating beef. Explain your answers. reason 1 explanation reason 2 explanation [4] © UCLES 2008 0610/32/O/N/08 For Examiner's Use
9 (b) (i) Calculate the dry mass of mycoprotein not represented by protein, fat, fibre or carbohydrate. For Examiner's Use Show your working. Answer g [2] (ii) Suggest one nutrient that this dry mass might contain. [1] © UCLES 2008 0610/32/O/N/08 [Turn over
10 (c) The antibiotic penicillin is produced by fungi that are grown in a fermenter, as shown in Fig. 3.1. The process is similar to the manufacture of enzymes. waste gases water out water jacket feedstock X extract mycoprotein air filtrate water in Fig. 3.1 (i) Name the two raw materials likely to be present in the feedstock. 1. 2. [2] (ii) State the function of X. [1] (iii) Suggest the name of the main gas present in the waste gases. [1] © UCLES 2008 0610/32/O/N/08 For Examiner's Use
11 (d) During the fermenting process, the temperature in the container would rise unless steps are taken to maintain a constant temperature. For Examiner's Use (i) Suggest a suitable temperature for the feedstock. [1] (ii) Explain why the temperature rises. [2] (iii) Explain why a constant temperature has to be maintained. [2] (iv) Using information from Fig. 3.1, suggest how a constant temperature is maintained. [1] [Total: 19] © UCLES 2008 0610/32/O/N/08 [Turn over
12 4 A newspaper headline incorrectly stated, “The use of condoms can result in erectile dysfunction”. Erectile dysfunction is a medical problem which results in problems with sexual intercourse. Scientists are concerned that this incorrect statement could lead to an increase in HIV. (a) Describe the process of sexual intercourse in humans. [2] (b) Condoms are used as one form of birth control. (i) What name is used to describe this method of birth control? [1] (ii) Explain how a condom acts as a method of birth control. [2] (c) Some readers of the newspaper may believe the newspaper and stop using condoms during sexual intercourse. (i) Explain how a decrease in the use of condoms may lead to an increase in the incidence of HIV. [2] (ii) State two ways by which a person who does not have sexual intercourse might still become infected with HIV. 1. 2. © UCLES 2008 [2] 0610/32/O/N/08 For Examiner's Use
13 (iii) Explain why the immune system is less effective in a person with HIV. For Examiner's Use [3] (d) Another sexually transmitted disease is gonorrhoea. For this disease, state (i) one sign or symptom, (ii) one effect on the body, (iii) the treatment. [3] [Total: 15] © UCLES 2008 0610/32/O/N/08 [Turn over
14 5 Table 5.1 shows the energy reserves for skeletal muscles in an athlete. For Examiner's Use Table 5.1 time the reserve would last / min energy reserve mass / g energy / kJ walking marathon running blood glucose 3 48 4 1 liver glycogen 100 1660 86 20 muscle glycogen 350 5800 288 71 9000 337 500 15 500 4018 fat in skin (a) (i) Compare the effect of walking and marathon running on energy reserves. [2] (ii) Suggest which two energy reserves would be most readily available to muscles during exercise. 1. 2. [1] (iii) Underline the two food groups to which the energy reserves in Table 5.1 belong. protein mineral fibre fat carbohydrate [1] kJ per gram [2] (iv) Calculate the energy per gram of glycogen. Show your working. energy = © UCLES 2008 0610/32/O/N/08
15 (b) Suggest why athletes eat foods high in For Examiner's Use (i) proteins, during their training; [1] (ii) carbohydrates, for three days before a marathon race. [2] (c) During a fast race (a 100 metre sprint), 95% of the energy comes from anaerobic respiration. During a marathon, only 2% of the energy comes from anaerobic respiration. (i) State the equation, in symbols, for anaerobic respiration in muscles. [2] (ii) Suggest and explain why a sprinter can use mainly anaerobic respiration during the race, while a marathon runner needs to use aerobic respiration. [4] (iii) Explain how, during a marathon race, the blood glucose concentration stays fairly constant, but the mass of glycogen in the liver decreases. [2] [Total: 17] © UCLES 2008 0610/32/O/N/08
16 BLANK PAGE Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. 0610/32/O/N/08

More Related Content

PDF
82745 science-specimen-paper-1-2014-2017
byWaqas Shahzad
 
PDF
0610 w07 qp_3
byKing Ali
 
PDF
82743 science-specimen-paper-2-2014-2017
bySmart Exam Resources
 
PDF
0580_w08_qp_02
byKing Ali
 
PDF
0610 w09 qp_31
byKing Ali
 
PDF
Physics 0625 - Paper 3 version 1 - Mark scheme - May Jun 2014
byJakKy Kitmanacharounpong
 
PDF
Primary checkpoint science (0846) specimen 2014 paper 1
byMashiyat Jahin
 
PDF
Checkpoint Lower Secondary Past Papers-P1 October-2017-science
bysmartexamresources
 
82745 science-specimen-paper-1-2014-2017
byWaqas Shahzad
 
0610 w07 qp_3
byKing Ali
 
82743 science-specimen-paper-2-2014-2017
bySmart Exam Resources
 
0580_w08_qp_02
byKing Ali
 
0610 w09 qp_31
byKing Ali
 
Physics 0625 - Paper 3 version 1 - Mark scheme - May Jun 2014
byJakKy Kitmanacharounpong
 
Primary checkpoint science (0846) specimen 2014 paper 1
byMashiyat Jahin
 
Checkpoint Lower Secondary Past Papers-P1 October-2017-science
bysmartexamresources
 

What's hot

PDF
0625 m15 qp_32
byOmniya Jay
 
PDF
0610 s09 qp_3
byKing Ali
 
PDF
0580 s13 qp_42
byKing Ali
 
PDF
0580_s14_qp_43
byKing Ali
 
PDF
Physics 0625 - Paper 3 version 2 - Question Paper - May Jun 2014
byJakKy Kitmanacharounpong
 
PDF
0580_s14_qp_42
byKing Ali
 
PDF
Paper-2-2017- Cambridge Lower Secondayr Science Past Paper
bysmartexamresources
 
PDF
Cambridge checkpoint science p2 specimen 2012
byPranav Agrawal
 
PDF
Physics 0625 - Paper 3 version 2 - Mark scheme - May Jun 2013
byJakKy Kitmanacharounpong
 
PDF
Cambridge checkpoint science p1 specimen 2012
byPranav Agrawal
 
PDF
0610 s07 qp_3
byKing Ali
 
PDF
82736 maths-specimen-paper-2-2014-2017
bySmart Exam Resources
 
PDF
Physics 0625 - Paper 3 version 3 - Question Paper - May Jun 2013
byJakKy Kitmanacharounpong
 
PDF
Physics 0625 - Paper 3 version 1 - Question Paper - May Jun 2014
byJakKy Kitmanacharounpong
 
PDF
0625 s15 qp_32
byOmniya Jay
 
PDF
Cambridge Lower Secondary Checkpoint Past Paper P2 October-2017-science
bySmart Exam Resources
 
PDF
Physics 0625 - Paper 3 version 2 - Mark scheme - May Jun 2014
byJakKy Kitmanacharounpong
 
PDF
0625 w08 ms_3
byKing Ali
 
PDF
Primary checkpoint science (0846) specimen 2014 (paper 2)
byMashiyat Jahin
 
PDF
Primary checkpoint-science-0846-october-2015-paper-1
byShamini Thanga Rajan
 
0625 m15 qp_32
byOmniya Jay
 
0610 s09 qp_3
byKing Ali
 
0580 s13 qp_42
byKing Ali
 
0580_s14_qp_43
byKing Ali
 
Physics 0625 - Paper 3 version 2 - Question Paper - May Jun 2014
byJakKy Kitmanacharounpong
 
0580_s14_qp_42
byKing Ali
 
Paper-2-2017- Cambridge Lower Secondayr Science Past Paper
bysmartexamresources
 
Cambridge checkpoint science p2 specimen 2012
byPranav Agrawal
 
Physics 0625 - Paper 3 version 2 - Mark scheme - May Jun 2013
byJakKy Kitmanacharounpong
 
Cambridge checkpoint science p1 specimen 2012
byPranav Agrawal
 
0610 s07 qp_3
byKing Ali
 
82736 maths-specimen-paper-2-2014-2017
bySmart Exam Resources
 
Physics 0625 - Paper 3 version 3 - Question Paper - May Jun 2013
byJakKy Kitmanacharounpong
 
Physics 0625 - Paper 3 version 1 - Question Paper - May Jun 2014
byJakKy Kitmanacharounpong
 
0625 s15 qp_32
byOmniya Jay
 
Cambridge Lower Secondary Checkpoint Past Paper P2 October-2017-science
bySmart Exam Resources
 
Physics 0625 - Paper 3 version 2 - Mark scheme - May Jun 2014
byJakKy Kitmanacharounpong
 
0625 w08 ms_3
byKing Ali
 
Primary checkpoint science (0846) specimen 2014 (paper 2)
byMashiyat Jahin
 
Primary checkpoint-science-0846-october-2015-paper-1
byShamini Thanga Rajan
 

Viewers also liked

PDF
0610 s08 qp_3
byKing Ali
 
PDF
0610 s10 qp_31
byKing Ali
 
PDF
0620_s08_qp_3
byKing Ali
 
PDF
0620 4
byKing Ali
 
PDF
0610 s08 qp_2
byKing Ali
 
PDF
0610 s08 qp_6
byKing Ali
 
PDF
0610 s03 qp_1
byKing Ali
 
PDF
0625 s07 qp_3
byKing Ali
 
PDF
0610 w02 qp_1
byKing Ali
 
PDF
0620 s08 ms_31+32
byKing Ali
 
PDF
0625 w10 qp_32
byKing Ali
 
PDF
0610 s08 qp_1
byKing Ali
 
PDF
0510 w10 qp_21
byKing Ali
 
PDF
0625 s08 qp_3
byKing Ali
 
PPTX
Turning Effect of Forces
byShafie Sofian
 
PDF
Penicillin Production
byHuda Nazeer
 
0610 s08 qp_3
byKing Ali
 
0610 s10 qp_31
byKing Ali
 
0620_s08_qp_3
byKing Ali
 
0620 4
byKing Ali
 
0610 s08 qp_2
byKing Ali
 
0610 s08 qp_6
byKing Ali
 
0610 s03 qp_1
byKing Ali
 
0625 s07 qp_3
byKing Ali
 
0610 w02 qp_1
byKing Ali
 
0620 s08 ms_31+32
byKing Ali
 
0625 w10 qp_32
byKing Ali
 
0610 s08 qp_1
byKing Ali
 
0510 w10 qp_21
byKing Ali
 
0625 s08 qp_3
byKing Ali
 
Turning Effect of Forces
byShafie Sofian
 
Penicillin Production
byHuda Nazeer
 

Similar to 0610 w08 qp_o3 (2)

PDF
0610 w13 qp_32
byKing Ali
 
PDF
0610 s07 qp_3
byKing Ali
 
PDF
0610 w12 qp_33
byKing Ali
 
PDF
0610_s05_qp_3
byKing Ali
 
PDF
061011 mj10
byKing Ali
 
PDF
oct/nov 2007 biology paper 3
byqusai khashman
 
PDF
0610 s16 qp_21
byOmniya Jay
 
PDF
0610 s12 qp_32
byKing Ali
 
PDF
1
byKing Ali
 
PDF
0610 w13 qp_33
byKing Ali
 
PDF
0610_w11_qp_22
byKing Ali
 
PDF
0610_s06_qp_3
byKing Ali
 
PDF
0610 s05 qp_1
byKing Ali
 
DOCX
Bio 103 final exam guide version 2 100% correct answers
byProfessorLance
 
PDF
0610 s15 qp_12
byOmniya Jay
 
PDF
0610 s11 qp_11
byKing Ali
 
PDF
0610 s09 qp_1
byKing Ali
 
PDF
biology " Pirshotam Rughani"
byPirshotam Rughani
 
PDF
0610 s10 qp_13
byKing Ali
 
PDF
0610 s13 qp_32
byKing Ali
 
0610 w13 qp_32
byKing Ali
 
0610 s07 qp_3
byKing Ali
 
0610 w12 qp_33
byKing Ali
 
0610_s05_qp_3
byKing Ali
 
061011 mj10
byKing Ali
 
oct/nov 2007 biology paper 3
byqusai khashman
 
0610 s16 qp_21
byOmniya Jay
 
0610 s12 qp_32
byKing Ali
 
1
byKing Ali
 
0610 w13 qp_33
byKing Ali
 
0610_w11_qp_22
byKing Ali
 
0610_s06_qp_3
byKing Ali
 
0610 s05 qp_1
byKing Ali
 
Bio 103 final exam guide version 2 100% correct answers
byProfessorLance
 
0610 s15 qp_12
byOmniya Jay
 
0610 s11 qp_11
byKing Ali
 
0610 s09 qp_1
byKing Ali
 
biology " Pirshotam Rughani"
byPirshotam Rughani
 
0610 s10 qp_13
byKing Ali
 
0610 s13 qp_32
byKing Ali
 

More from King Ali

PDF
Friendship Poem by Haider Ali (1)
byKing Ali
 
PDF
Friendship Poem by Haider Ali (2)
byKing Ali
 
PDF
Hands and feet decorated paper
byKing Ali
 
PDF
Multicultural children decorated paper
byKing Ali
 
PDF
0610_s04_qp_3
byKing Ali
 
PDF
Circular+(warning)+drinking+water
byKing Ali
 
PDF
0620_w08_qp_2
byKing Ali
 
PDF
0620_w05_qp_6
byKing Ali
 
PDF
0620_s05_qp_3
byKing Ali
 
PDF
0610_s14_qp_33
byKing Ali
 
PDF
5125_w03_qp_04
byKing Ali
 
PDF
0625_w14_qp_11
byKing Ali
 
PDF
0625_w13_qp_12
byKing Ali
 
PDF
0625_s06_qp_1
byKing Ali
 
PDF
0625_w12_qp_11
byKing Ali
 
PDF
0625_w11_qp_11
byKing Ali
 
PDF
0625_s14_qp_11
byKing Ali
 
PDF
0625_s14_qp_12
byKing Ali
 
PDF
0580_s04_qp_4
byKing Ali
 
PDF
0580_w13_qp_43
byKing Ali
 
Friendship Poem by Haider Ali (1)
byKing Ali
 
Friendship Poem by Haider Ali (2)
byKing Ali
 
Hands and feet decorated paper
byKing Ali
 
Multicultural children decorated paper
byKing Ali
 
0610_s04_qp_3
byKing Ali
 
Circular+(warning)+drinking+water
byKing Ali
 
0620_w08_qp_2
byKing Ali
 
0620_w05_qp_6
byKing Ali
 
0620_s05_qp_3
byKing Ali
 
0610_s14_qp_33
byKing Ali
 
5125_w03_qp_04
byKing Ali
 
0625_w14_qp_11
byKing Ali
 
0625_w13_qp_12
byKing Ali
 
0625_s06_qp_1
byKing Ali
 
0625_w12_qp_11
byKing Ali
 
0625_w11_qp_11
byKing Ali
 
0625_s14_qp_11
byKing Ali
 
0625_s14_qp_12
byKing Ali
 
0580_s04_qp_4
byKing Ali
 
0580_w13_qp_43
byKing Ali
 

Recently uploaded

PDF
The Complete Crypto Airdrop Playbook: Strategies, Scams & Success Stories | 3...
by3verseTV
 
PDF
Q3'25 Financial Results and Earnings Presentation
byDropbox
 
PPTX
A GREEN BUSINESS TOOLKIT FOR EARLY-STAGE ENTREPRENEURS (1).pptx.pptx
bylearnskillsofficial1
 
PDF
Database Performance at Scale: The TL;DR
byScyllaDB
 
PDF
Cybersecurity in ASEAN and Singapore Columbia SIPA 2025.pdf
byBenjamin Ang
 
PDF
Getting started with Agent Framework.pdf
byNilesh Gule
 
PDF
How to not make bugs (in JSC), and the future of 32-bits
byIgalia
 
PDF
Configure and Secure SSH - RHCSA (RH124).pdf
byLinuxCert Guru
 
PDF
MathML Core in WebKit
byIgalia
 
PDF
Dr. Robert Krug - Specializes In Predictive Modeling
byDr. Robert Krug
 
PDF
Manage Files Using CLI - RHCSA (RH124).pdf
byLinuxCert Guru
 
PDF
Do more with the HP Z2 Mini G1a
byPrincipled Technologies
 
PPTX
Expanding Your Toolbox: Beginners Guide to Controlling Kubernetes Logs
byEric D. Schabell
 
PDF
Create, View and Edit Text Files - RHCSA (RH124).pdf
byLinuxCert Guru
 
PPTX
GenAI GraphTalk - Kuala Lumpur - 4 Nov 2025
bygourisachdeva2
 
PDF
Unleash AI power with the Dell Pro 14 Plus - Interactive PDF
byPrincipled Technologies
 
PDF
Writing GPU-Ready AI Models in Pure Java with Babylon
byAna-Maria Mihalceanu
 
PDF
Analyze and Store Logs - RHCSA (RH124).pdf
byLinuxCert Guru
 
PDF
"Visual Guide to DSA: Big O Notation, Data Structures, and Algorithms Fundame...
byNusrat Gulbarga
 
PDF
Access Linux File System in RHEL - RHCSA (RH124).pdf
byLinuxCert Guru
 
The Complete Crypto Airdrop Playbook: Strategies, Scams & Success Stories | 3...
by3verseTV
 
Q3'25 Financial Results and Earnings Presentation
byDropbox
 
A GREEN BUSINESS TOOLKIT FOR EARLY-STAGE ENTREPRENEURS (1).pptx.pptx
bylearnskillsofficial1
 
Database Performance at Scale: The TL;DR
byScyllaDB
 
Cybersecurity in ASEAN and Singapore Columbia SIPA 2025.pdf
byBenjamin Ang
 
Getting started with Agent Framework.pdf
byNilesh Gule
 
How to not make bugs (in JSC), and the future of 32-bits
byIgalia
 
Configure and Secure SSH - RHCSA (RH124).pdf
byLinuxCert Guru
 
MathML Core in WebKit
byIgalia
 
Dr. Robert Krug - Specializes In Predictive Modeling
byDr. Robert Krug
 
Manage Files Using CLI - RHCSA (RH124).pdf
byLinuxCert Guru
 
Do more with the HP Z2 Mini G1a
byPrincipled Technologies
 
Expanding Your Toolbox: Beginners Guide to Controlling Kubernetes Logs
byEric D. Schabell
 
Create, View and Edit Text Files - RHCSA (RH124).pdf
byLinuxCert Guru
 
GenAI GraphTalk - Kuala Lumpur - 4 Nov 2025
bygourisachdeva2
 
Unleash AI power with the Dell Pro 14 Plus - Interactive PDF
byPrincipled Technologies
 
Writing GPU-Ready AI Models in Pure Java with Babylon
byAna-Maria Mihalceanu
 
Analyze and Store Logs - RHCSA (RH124).pdf
byLinuxCert Guru
 
"Visual Guide to DSA: Big O Notation, Data Structures, and Algorithms Fundame...
byNusrat Gulbarga
 
Access Linux File System in RHEL - RHCSA (RH124).pdf
byLinuxCert Guru
 

0610 w08 qp_o3 (2)

  • 1.
    w w ap eP m e tr .X w om .c s er Location Entry Codes Aspart of CIE’s continual commitment to maintaining best practice in assessment, CIE uses different variants of some question papers for our most popular assessments with large and widespread candidature. The question papers are closely related and the relationships between them have been thoroughly established using our assessment expertise. All versions of the paper give assessment of equal standard. The content assessed by the examination papers and the type of questions is unchanged. This change means that for this component there are now two variant Question Papers, Mark Schemes and Principal Examiner’s Reports where previously there was only one. For any individual country, it is intended that only one variant is used. This document contains both variants which will give all Centres access to even more past examination material than is usually the case. The diagram shows the relationship between the Question Papers, Mark Schemes and Principal Examiners’ Reports that are available. Question Paper Mark Scheme Principal Examiner’s Report Introduction Introduction Introduction First variant Question Paper First variant Mark Scheme First variant Principal Examiner’s Report Second variant Question Paper Second variant Mark Scheme Second variant Principal Examiner’s Report Who can I contact for further information on these changes? Please direct any questions about this to CIE’s Customer Services team at: [email protected] The titles for the variant items should correspond with the table above, so that at the top of the first page of the relevant part of the document and on the header, it has the words: • First variant Question Paper / Mark Scheme / Principal Examiner’s Report • Second variant Question Paper / Mark Scheme / Principal Examiner’s Report or as appropriate.
  • 2.
    First Variant QuestionPaper UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *7692322713* 0610/31 BIOLOGY October/November 2008 Paper 3 Extended 1 hour 15 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams or graphs. Do not use staples, paper clips, highlighters, glue or correction fluid. DO NOT WRITE IN ANY BARCODES. Answer all questions. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner's Use 1 2 3 4 5 Total This document consists of 13 printed pages and 3 blank pages. IB08 11_0610_31/7RP © UCLES 2008 [Turn over
  • 3.
    2 1 The freshwater mussel,Margaritifera margaritifera, is a mollusc which lives in rivers and streams. When the mussel reproduces, gametes are released into the water and fertilisation takes place. The embryos, in the form of larvae, attach themselves to the gills of fish and develop there for a few months. The larvae then release themselves and grow in sand in the river, feeding by filtering food from the water. The number of mussels is falling due to human predation and the species is threatened with extinction. (a) The mussel belongs to the group known as the molluscs. State two features you would expect the mussel to have. 1. 2. [2] (b) Explain how the species name of the freshwater mussel can be distinguished from its genus. [1] (c) State the type of reproduction shown by the mussel. Explain your answer. type of reproduction explanation [2] (d) (i) Fish gills have the same function as lungs. Suggest one advantage to a mussel larva of attaching itself to fish gills. [1] (ii) The mussel develops on the fish gills. Define the term development. [1] © UCLES 2008 0610/31/O/N/08 For Examiner's Use
  • 4.
    3 (e) The musselis threatened with extinction. Name another organism which is also threatened with extinction and outline how it could be conserved. For Examiner's Use name of species outline of conservation [3] [Total: 10] © UCLES 2008 0610/31/O/N/08 [Turn over
  • 5.
    4 2 Fig. 2.1 showscrop productivity for a range of plants but the bar graph is incomplete. 9.0 world average 8.0 highest yield 7.0 6.0 productivity per day of growing season / g per m2 5.0 4.0 3.0 2.0 1.0 0 wheat oats maize rice type of crop Fig. 2.1 © UCLES 2008 0610/31/O/N/08 potatoes sugar beet For Examiner's Use
  • 6.
    5 (a) Complete Fig.2.1 using the following data. crop productivity per day of growing season / g per m 2 world average potatoes For Examiner's Use highest yield 2.6 5.6 [2] (b) State which crop has (i) the highest average productivity, (ii) the greatest difference between the average yield and the highest yield. [2] (c) Outline how modern technology could be used to increase the productivity of a crop from the average yield to a high yield. [3] (d) When the yield is measured, dry mass is always used rather than fresh mass. Suggest why dry mass is a more reliable measurement than fresh mass. [1] © UCLES 2008 0610/31/O/N/08 [Turn over
  • 7.
    6 (e) Maize isoften used to feed cows, which are grown to provide meat for humans. Explain why it is more efficient for humans to eat maize rather than meat from cows that have been fed on maize. [3] (f) (i) Complete the equation for photosynthesis. light energy 6CO2 + 6H2O C6H12O6 + ................. [1] (ii) Describe how leaves are adapted to trap light. [2] (iii) With reference to water potential, explain how water is absorbed by roots. [3] (iv) Explain how photosynthesising cells obtain carbon dioxide. [2] [Total: 19] © UCLES 2008 0610/31/O/N/08 For Examiner's Use
  • 8.
    7 3 Mycoprotein is similarto single cell protein and is sold as an alternative to meat such as beef. For Examiner's Use Table 3.1 shows the composition of mycoprotein and beef. Table 3.1 dry mass / g per 100 g nutrient mycoprotein protein uncooked beef 49.0 51.4 9.2 48.6 fibre (roughage) 19.5 0.0 carbohydrate 20.6 0.0 fat (a) (i) State two differences in composition between mycoprotein and beef. 1. 2. [2] (ii) Using data from Table 3.1, suggest two reasons why eating mycoprotein is better for health than eating beef. Explain your answers. reason 1 explanation reason 2 explanation [4] © UCLES 2008 0610/31/O/N/08 [Turn over
  • 9.
    8 (b) (i) Calculatethe dry mass of mycoprotein not represented by protein, fat, fibre or carbohydrate. Show your working. Answer g [2] (ii) Suggest one nutrient that this dry mass might contain. [1] (c) The antibiotic penicillin is produced by fungi that are grown in a fermenter, as shown in Fig. 3.1. The process is similar to the manufacture of enzymes. waste gases water out water jacket feedstock X extract mycoprotein air filtrate water in © UCLES 2008 Fig. 3.1 0610/31/O/N/08 For Examiner's Use
  • 10.
    9 (i) Name thetwo raw materials likely to be present in the feedstock. For Examiner's Use 1. 2. [2] (ii) State the function of X. [1] (iii) Suggest the name of the main gas present in the waste gases. [1] (d) During the fermenting process, the temperature in the container would rise unless steps are taken to maintain a constant temperature. (i) Suggest a suitable temperature for the feedstock. [1] (ii) Explain why the temperature rises. [2] (iii) Explain why a constant temperature has to be maintained. [2] (iv) Using the information from Fig. 3.1, suggest how a constant temperature is maintained. [1] [Total: 19] © UCLES 2008 0610/31/O/N/08 [Turn over
  • 11.
    10 4 A newspaper headlineincorrectly stated, “The use of condoms can result in erectile dysfunction”. Erectile dysfunction is a medical problem which results in problems with sexual intercourse. Scientists are concerned that this incorrect statement could lead to an increase in HIV. (a) Describe the process of sexual intercourse in humans. [2] (b) Condoms are used as one form of birth control. (i) What name is used to describe this method of birth control? [1] (ii) Explain how a condom acts as a method of birth control. [2] (c) Some readers of the newspaper may believe the newspaper and stop using condoms during sexual intercourse. (i) Explain how a decrease in the use of condoms may lead to an increase in the incidence of HIV. [2] (ii) State two ways by which a person who does not have sexual intercourse might still become infected with HIV. 1. 2. © UCLES 2008 [2] 0610/31/O/N/08 For Examiner's Use
  • 12.
    11 (iii) Explain whythe immune system is less effective in a person with HIV. For Examiner's Use [3] (d) Another sexually transmitted disease is gonorrhoea. For this disease, state (i) one sign or symptom, (ii) one effect on the body, (iii) the treatment. [3] [Total: 15] © UCLES 2008 0610/31/O/N/08 [Turn over
  • 13.
    12 5 Table 5.1 showsthe energy reserves for skeletal muscles in an athlete. For Examiner's Use Table 5.1 time the reserve would last / min energy reserve mass / g energy / kJ walking marathon running blood glucose 3 48 4 1 liver glycogen 100 1660 86 20 muscle glycogen 350 5800 288 71 9000 337 500 15 500 4018 fat in skin (a) (i) Compare the effect of walking and marathon running on energy reserves. [2] (ii) Suggest which two energy reserves would be most readily available to muscles during exercise. 1. 2. [1] (iii) Underline the two food groups to which the energy reserves in Table 5.1 belong. protein mineral fibre fat carbohydrate [1] (iv) Calculate the energy per gram of glycogen. Show your working. energy = © UCLES 2008 0610/31/O/N/08 kJ [2]
  • 14.
    13 (b) Suggest whyathletes eat foods high in For Examiner's Use (i) proteins, during training; [1] (ii) carbohydrates, for three days before a marathon race. [2] (c) During a fast race (a 100 metre sprint), 95% of the energy comes from anaerobic respiration. During a marathon, only 2% of the energy comes from anaerobic respiration. (i) State the equation, in symbols, for anaerobic respiration in muscles. [2] (ii) Suggest and explain why a sprinter can use mainly anaerobic respiration during the race, while a marathon runner needs to use aerobic respiration. [4] (iii) Explain how, during a marathon race, the blood glucose concentration stays fairly constant, but the mass of glycogen in the liver decreases. [2] [Total: 17] © UCLES 2008 0610/31/O/N/08
  • 15.
  • 16.
  • 17.
    16 BLANK PAGE Permission toreproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. 0610/31/O/N/08
  • 18.
    Second Variant QuestionPaper UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *3942584201* 0610/32 BIOLOGY October/November 2008 Paper 3 Extended 1 hour 15 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams or graphs. Do not use staples, paper clips, highlighters, glue or correction fluid. DO NOT WRITE IN ANY BARCODES. Answer all questions. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner's Use 1 2 3 4 5 Total This document consists of 15 printed pages and 1 blank page. IB08 11_0610_32/7RP © UCLES 2008 [Turn over
  • 19.
    2 1 The freshwater mussel,Margaritifera margaritifera, is a mollusc which lives in rivers and streams. When the mussel reproduces, gametes are released into the water and fertilisation takes place. The embryos, in the form of larvae, attach themselves to the gills of fish and develop there for a few months. The larvae then release themselves and grow in sand in the river, feeding by filtering food from the water. The number of mussels is falling due to human predation and the species is threatened with extinction. (a) The mussel belongs to the group known as the molluscs. State two features you would expect the mussel to have. 1. 2. [2] (b) Explain how the species name of the freshwater mussel can be distinguished from its genus. [1] (c) State the type of reproduction shown by the mussel. Explain your answer. type of reproduction explanation [2] (d) (i) Fish gills have the same function as lungs. Suggest one advantage to a mussel larva of attaching itself to fish gills. [1] (ii) The mussel develops on the fish gills. Define the term development. [1] © UCLES 2008 0610/32/O/N/08 For Examiner's Use
  • 20.
    3 (e) The musselis threatened with extinction. Name another organism which is also threatened with extinction and outline how it could be conserved. For Examiner's Use name of species outline of conservation [3] [Total: 10] © UCLES 2008 0610/32/O/N/08 [Turn over
  • 21.
    4 2 Fig. 2.1 showsthe apparatus used to find the energy in a groundnut. For Examiner's Use Results of the experiment are shown in Table 2.1. thermometer boiling tube 25 cm3 water mounted needle burning groundnut Fig. 2.1 Table 2.1 mass of nut / g energy / J 0.3 15 1575 0.4 24 0.5 29 3045 0.6 34 3570 0.7 © UCLES 2008 increase in temperature / °C 44 4620 0610/32/O/N/08
  • 22.
    5 (a) Describe howthe apparatus could be used to obtain the data shown in Table 2.1. For Examiner's Use [5] (b) The energy released by a groundnut was calculated using the equation shown below. energy = volume of water × increase in temperature × 4.2 Calculate the energy released by a groundnut of mass 0.4 g. Show your working. energy = © UCLES 2008 0610/32/O/N/08 J [2] [Turn over
  • 23.
    6 (c) Fig. 2.2shows a graph of the relationship between mass of groundnut and the energy it contains. The graph is incomplete. 5000 4000 3000 2000 1000 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Fig. 2.2 (i) Complete the graph, by adding the missing energy value, calculated in (b), drawing a line through the points and labelling the axes. [3] (ii) Describe the trend shown by the graph. [1] © UCLES 2008 0610/32/O/N/08 For Examiner's Use
  • 24.
    7 (d) (i) Theexperimental results show that a groundnut of mass 0.5 g contains 3045 J energy. For Examiner's Use Calculate the energy released from 100 g of these groundnuts. energy in 100 g = J [1] (ii) Official figures state that 100 g of groundnuts contain 2 428 000 J energy. With reference to the apparatus in Fig. 2.1, suggest two reasons why the experimental energy value for 100 g of groundnuts is much lower than the official energy value. 1. 2. [2] (e) Groundnuts plants are legumes. Describe how a groundnut plant obtains the nitrogen-containing compounds that it needs to make proteins. [5] [Total:19] © UCLES 2008 0610/32/O/N/08 [Turn over
  • 25.
    8 3 Mycoprotein is similarto single cell protein and is sold as an alternative to meat such as beef. Table 3.1 shows the composition of mycoprotein and beef. Table 3.1 dry mass / g per 100 g nutrient mycoprotein protein uncooked beef 49.0 51.4 9.2 48.6 fibre (roughage) 19.5 0.0 carbohydrate 20.6 0.0 fat (a) (i) State two differences in composition between mycoprotein and beef. 1. 2. [2] (ii) Using data from Table 3.1, suggest two reasons why eating mycoprotein is better for health than eating beef. Explain your answers. reason 1 explanation reason 2 explanation [4] © UCLES 2008 0610/32/O/N/08 For Examiner's Use
  • 26.
    9 (b) (i) Calculatethe dry mass of mycoprotein not represented by protein, fat, fibre or carbohydrate. For Examiner's Use Show your working. Answer g [2] (ii) Suggest one nutrient that this dry mass might contain. [1] © UCLES 2008 0610/32/O/N/08 [Turn over
  • 27.
    10 (c) The antibioticpenicillin is produced by fungi that are grown in a fermenter, as shown in Fig. 3.1. The process is similar to the manufacture of enzymes. waste gases water out water jacket feedstock X extract mycoprotein air filtrate water in Fig. 3.1 (i) Name the two raw materials likely to be present in the feedstock. 1. 2. [2] (ii) State the function of X. [1] (iii) Suggest the name of the main gas present in the waste gases. [1] © UCLES 2008 0610/32/O/N/08 For Examiner's Use
  • 28.
    11 (d) During thefermenting process, the temperature in the container would rise unless steps are taken to maintain a constant temperature. For Examiner's Use (i) Suggest a suitable temperature for the feedstock. [1] (ii) Explain why the temperature rises. [2] (iii) Explain why a constant temperature has to be maintained. [2] (iv) Using information from Fig. 3.1, suggest how a constant temperature is maintained. [1] [Total: 19] © UCLES 2008 0610/32/O/N/08 [Turn over
  • 29.
    12 4 A newspaper headlineincorrectly stated, “The use of condoms can result in erectile dysfunction”. Erectile dysfunction is a medical problem which results in problems with sexual intercourse. Scientists are concerned that this incorrect statement could lead to an increase in HIV. (a) Describe the process of sexual intercourse in humans. [2] (b) Condoms are used as one form of birth control. (i) What name is used to describe this method of birth control? [1] (ii) Explain how a condom acts as a method of birth control. [2] (c) Some readers of the newspaper may believe the newspaper and stop using condoms during sexual intercourse. (i) Explain how a decrease in the use of condoms may lead to an increase in the incidence of HIV. [2] (ii) State two ways by which a person who does not have sexual intercourse might still become infected with HIV. 1. 2. © UCLES 2008 [2] 0610/32/O/N/08 For Examiner's Use
  • 30.
    13 (iii) Explain whythe immune system is less effective in a person with HIV. For Examiner's Use [3] (d) Another sexually transmitted disease is gonorrhoea. For this disease, state (i) one sign or symptom, (ii) one effect on the body, (iii) the treatment. [3] [Total: 15] © UCLES 2008 0610/32/O/N/08 [Turn over
  • 31.
    14 5 Table 5.1 showsthe energy reserves for skeletal muscles in an athlete. For Examiner's Use Table 5.1 time the reserve would last / min energy reserve mass / g energy / kJ walking marathon running blood glucose 3 48 4 1 liver glycogen 100 1660 86 20 muscle glycogen 350 5800 288 71 9000 337 500 15 500 4018 fat in skin (a) (i) Compare the effect of walking and marathon running on energy reserves. [2] (ii) Suggest which two energy reserves would be most readily available to muscles during exercise. 1. 2. [1] (iii) Underline the two food groups to which the energy reserves in Table 5.1 belong. protein mineral fibre fat carbohydrate [1] kJ per gram [2] (iv) Calculate the energy per gram of glycogen. Show your working. energy = © UCLES 2008 0610/32/O/N/08
  • 32.
    15 (b) Suggest whyathletes eat foods high in For Examiner's Use (i) proteins, during their training; [1] (ii) carbohydrates, for three days before a marathon race. [2] (c) During a fast race (a 100 metre sprint), 95% of the energy comes from anaerobic respiration. During a marathon, only 2% of the energy comes from anaerobic respiration. (i) State the equation, in symbols, for anaerobic respiration in muscles. [2] (ii) Suggest and explain why a sprinter can use mainly anaerobic respiration during the race, while a marathon runner needs to use aerobic respiration. [4] (iii) Explain how, during a marathon race, the blood glucose concentration stays fairly constant, but the mass of glycogen in the liver decreases. [2] [Total: 17] © UCLES 2008 0610/32/O/N/08
  • 33.
    16 BLANK PAGE Permission toreproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. 0610/32/O/N/08