Unit 5 Review 1

5. an organism that breaks down dead organisms and wastes and returns nutrients to the environment
8. an anaerobic process that releases a small amount of energy from glucose
10. a model showing many interconnected food chains in an ecosystem
12. the process by which cells break down glucose to release energy in the form of ATP
13. organelles where cellular respiration occurs and ATP is produced
14. the release of energy from glucose without the use of oxygen
15. all the living and nonliving things in an area and the interactions between them
18. an organism that makes its own food using sunlight or chemical energy
20. cellular respiration that requires oxygen to release energy from glucose
22. a model that shows the transfer of energy from one organism to another in a single pathway

1. a simple sugar used by cells as a source of energy
2. all the members of the same species living in the same area
3. the movement of energy through organisms in an ecosystem
4. an organism that can produce its own food from sunlight or chemicals
6. an organelle in plant cells where photosynthesis occurs
7. an organism that must obtain food by consuming other organisms
9. the process by which plants and some other organisms use sunlight to make glucose from carbon dioxide and water
11. a molecule that stores and transfers energy for cell activities
12. the maximum population size an environment can support over time
16. the position an organism occupies in a food chain or food web
17. a diagram that shows the amount of energy available at each trophic level
19. the total amount of living organic matter in a given area or trophic level
21. an organism that gets energy by eating other organisms