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Earth and Life Science "Introduction to life"
This document discusses the key characteristics of life. It identifies seven characteristics shared by all living things: 1) cellular organization, 2) reproduction, 3) metabolism, 4) homeostasis, 5) heredity, 6) responsiveness, and 7) growth and development. Each characteristic is then further explained, with cellular organization distinguishing unicellular from multicellular organisms, and reproduction defined as asexual or sexual. The document also provides examples to illustrate metabolism, homeostasis, heredity, and responsiveness.
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Earth and Life Science "Introduction to life"
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- 5. In this lesson,you are able to identify the different characteristics of life and explain how unifying themes about life.
- 7. What is thedifference between a living thing and a nonliving thing?
- 8. All living thingsshaare some basic properties.Cellular Organization Reproduction Metabolism (Obtain and Use Energy) Homeostasis Heredity Responsiveness
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- 10. Unicellular Organisms Entire organismis made up of one single cell Bacteria and protists Smallest unit capable of all life functions
- 11. Multicellular OrganismsThe organism ismade up of many cells Cells have specialized functions within the organism
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- 13. Reproduction is theprocess of producing new organisms of the same type Asexual Reproduction A single parent organism reproducing by itself
- 14. Sexual Reproduction Two differentparent organisms contribute genetic information Involves the combination of male and female sex cells
- 15. 3. Metabolism (Obtain andUse Energy)
- 16. Living organisms needenergy to grow, develop, repair damage, and reproduce
- 17. Anabolis m The process ofbuilding up complex substances from simpler substances Building up cells and cellular components Photosynthesis
- 18. Catabolism The process ofbreaking down complex substances into simpler substances to release energy Digestion Cellular Respiration
- 19. Metabolism The total ofall chemical reactions in an organism Anabolism + Catabolism = Metabolism
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- 21. A stable stateof conditions in the body that are necessary for life Body temperature Blood volume pH balance & Water balance
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- 23. Genes carry hereditaryinformation Genes are composed of DNA Heredity is the reason children resemble their parents Mutations change DNA code and can be passed from generation to generation
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- 25. Organisms react to stimuli: Light Temperature Odor Sound Gravity Anexample is a plant’s leaves and stems growing toward light
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- 27. Growth means toget bigger in size
- 28. Development involves achange in the physical form or physiological make-up of an organism
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- 30. Adaptatio n A process thatenables organisms to become better suited to their environment Species obtain adaptations through evolution over great periods of time
- 31. An Example of Adaptation Desertplants have succulent waxy leaves and stems to store water and reduce water loss
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- 33. CHARACTERISTICS OF LIFE 1.Cellular Organization (made up of cells) 2. Reproduction 3. Metabolism (Obtain and Use Energy) 4. Homeostasis ( body temperature, ph & water balance,) 5. Heredity ( hereditary traits) 6. Responsiveness ( respose to environment) 7. Growth and Development
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