1. Ecology Practice Test

2. 1. What chemical reaction releases the free energy of organic compounds for use by organisms? A. Photosynthesis B. Protein synthesis C. Chemosynthesis D. Cell respiration E. Nitrification

3. 2. Which of these is a type of primary consumer in an ecosystem? A. Carnivore B. Decomposer C. Herbivore D. Omnivore E. Producer

4. 3. Which kingdoms have members who are decomposers? Choose all that apply. A. Monera B. Protista C. Fungi D. Animalia E. Plantae

5. 4. Which population dynamic will most likely lead to extinction? A. Predator-prey cycle B. Logistic growth C. Population crash D. Exponential growth

6. 5. All organisms contribute to the carbon cycle through the process of ___. A. Protein synthesis B. Cell respiration C. Photosynthesis D. Nitrification E. Chemosynthesis

7. 6. After an organism dies, nitrogen is returned to the soil in the form of ___. A. Nitrogen gas B. carbon dioxide C. proteins D. Ammonia E. nitrates

8. 7. Which one of these is a greenhouse gas? Choose all that apply. A. Oxygen B. Nitrogen C. Water vapor D. Carbon E. Carbon dioxide

9. 8. If an energy pyramid has a total of 500,000 calories at its base, how many calories are transferred to its TERTIARY consumers? A. 5000 B. 500 C. 12,500 D. 25,000 E. 2500

10. 9. Which process returns nitrogen back into the soil when organisms die? A. Photosynthesis B. Chemosynthesis C. Protein synthesis D. Cell respiration E. Decomposition

11. 10. Explain how producers & decomposers together contribute to the continuation of life.