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Name__________________________ 1. Which of these organelles use oxygen to release energy in living organisms? A) B) C) D) nuclei ribosomes chloroplasts mitochondria 2. The process of cellular respiration A) B) C) D) is performed only by organisms that are incapable of photosynthesis. breaks down food molecules to release stored energy. occurs before plants are able to carry out photosynthesis. occurs only in animals. 3. Which results from aerobic cellular respiration? A) ATP B) water (H20) C) carbon dioxide (CO2) D) all of these 4. Which statement is true about glycolysis: A. It takes place in the cytoplasm of the cell B it requires no oxygen C. It splits 1 sugar molecule into 2 D All of the above 5. The electron transport chain: A. Occurs in the membrane of the mitochondria B. Uses oxygen as the final electron acceptor C. Produces the greatest amount of ATP D. All of the above 6. Which is NOT true about the Krebs cycle? A. It produces 1 ATP for every CO2 molecule B. It does not occur in the mitochondria C. It requires input of oxygen D. It releases CO2 as a waste product 7 8 9 10 11 12 13 14. Define autotroph and heterotroph, and give an example of each. 15. Explain the role of food (glucose) cellular respiration. 16. Explain how life on Earth depends on the sun. 17. Compare and contrast breathing and cellular respiration. 18. List the reactants and products in cellular respiration. 19. How does an electron transport chain result in the gradual release of energy stored in glucose?