Last Name_______________________________
First Name____________________
1. What is the First Law of Thermodynamics? Second Law of Thermodynamics?
2. What is oxidation? Reduction?
3. What is a redox reaction?
4. What is the role of a dehydrogenase enzyme? What role do these enzymes play in oxidation-reduction
(redox) reactions?
5. What is the role of a reducing agent and what happens to a reducing agent when it carries out its task (what
does it become, oxidized or reduced)?
6. What is the role of an oxidizing agent and what happens to an oxidizing agent when it carries out its task
(what does it become, oxidized or reduced)?
7. Write the overall balanced chemical equation for cellular respiration.
8. Name the three phases of cellular respiration?
9. Which of these phases can take place in the absence of oxygen? Which phase actually consumes oxygen?
10. What are two reducing agents used in cellular respiration? What are the oxidized forms of the reducing
agents you just named?
11. What is “substrate-level phosphorylation”? Which phase(s) of cellular respiration uses SLP to form ATP?
12. What is the net production of ATP/glucose during Glycolysis? How many ATP/glucose in the Kreb’s cycle?
13. What is “oxidative phosphorylation”? Which phase of cellular respiration is OP used to form ATP?
14. How many carbon atoms are in one molecule of glucose?
15. A molecule of glucose is split into ____, ___-carbon fragments called ____________ during Glycolysis.
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16. What happens to Pyruvate (which metabolic pathway does it go to) if oxygen is present?
17. Are any electron carriers reduced during Glycolysis? If yes, which one(s)?
18. If oxygen is not present which metabolic pathway will occur?
19. What substance is formed in yeast by the chemical reaction you named in question 18?
20. What substance is formed in vertebrate skeletal muscle by the chemical reaction you named in question 18?
21. Write out or describe what happens to Pyruvate before it enters the Krebs Cycle.
22. How many and what reduced coenzymes are formed in Glycolysis (per glucose)?
23. How many and what reduced coenzymes are produced in the Krebs Cycle (per glucose)?
24. How many and what reduced coenzymes are produced during the grooming of pyruvate (per glucose)?
25. Is carbon dioxide produced within the Krebs Cycle? If yes, how many per glucose?
26. In what phase of cellular respiration is CO2 first produced?
27. What happens to the reduced coenzymes that were produced in Glycolysis and the Krebs Cycle?
28. What is the final electron acceptor in cellular respiration? Why is it necessary to have an element like
oxygen as the final electron acceptor?
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29. When oxygen accepts the electrons it also accepts hydrogens to form ___________.
30. Explain the “Chemiosmotic Model of ATP Production”.
31. What is the ATP Synthase? Where is it located in plant cells? Animal cells?
32. What is the maximum number of ATP molecules that can be produced from the breakdown of one molecule
of glucose via cellular respiration?
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