The 8 Life Processes & Homeostasis - Living Environment/Biology

The 8 Life Processes & Homeostasis - Living Environment/Biology

• 1.
  What are thelife functions? • Life functions are the processes that animals rely on to stay alive. • The life functions include: • Nutrition • Excretion • Transport • Synthesis • Growth • Regulation • Reproduction • Respiration • If a living thing possesses all eight of the life functions, it is considered an organism. Created by R. Frank, 2013
• 2.
  The 8 LifeProcesses • Nutrition: the process by which living things take in materials from its environment for growth and repair. • There are two types of nutrition. • Autotrophic Nutrition: where a living thing can make its own food • Heterotrophic Nutrition: where a living thing must ingest (take in) its food
• 3.
  The 8 LifeProcesses • Excretion: the process by which living things remove waste products produced by cell activities • Transport: the process by which usable materials are taken into the living thing (absorption) and distributed throughout the living thing (circulation) • Synthesis: the process by which smaller, simple substances are combined chemically to form larger, more complex substances
• 4.
  The 8 LifeProcesses • Growth: the process by which living things increase in size or cell number • Regulation: the process where a living thing controls and coordinates its various activities. • In animals, the nervous and endocrine systems regulate metabolic activities.
• 5.
  The 8 LifeProcesses • Respiration: the breakdown of nutrients to yield (or give off) chemical energy • There are two types of respiration: • Anaerobic Respiration: doesn’t use oxygen • Aerobic Respiration: uses oxygen
• 6.
  The 8 LifeProcesses • Reproduction: the process by which living things produce new living things of the same kind • Reproduction is not needed for the organism itself to survive, but it is needed for the species to survive as a whole. • There are two types of reproduction: Asexual Reproduction: involves one parent and the offspring are identical to the parent Sexual Reproduction: involves two parents and the offspring is a combination of both parents
• 7.
  Homeostasis & Metabolism •An organism's external environment is always changing. By keeping controlling and regulating its metabolic activities, an organism can maintain a stable internal environment. This is called homeostasis. • Metabolism: the sum of all eight life functions working together. • Homeostasis: the process by which an organism's metabolic activities are in a state of balance. Examples of homeostasis are the regulation body temperature, and levels of blood sugar.