SBI 4U Metabolic Processes Review Questions
1. How many ATP are produced in Cellular Respiration?
2. What is oxidative phosphorylation?
3. What is substrate-level phosphorylation?
4. What 3 modifications occur to pyruvate in pyruvate oxidation?
5. Where does the Kreb’s Cycle occur in the cell?
6. How molecules of ATP are produced from NADH?
7. How molecules of ATP are produced from FADH2?
8. Where does glycolysis occur?
9. Which stages of cellular respiration are aerobic?
10. List in order the various structures involved in the electron transport chain, starting with NADH
Reductase (or Dehydrogenase)
11. What is the main end product in glycolysis?
12. Define endergonic.
13. Define exergonic.
14. What is an enzyme?
15. What is oxidation and give an example.
16. Define activation energy.
17. At what point on the ETC do the electrons stop from getting passed on?
18. What is the name of the substance that enters the Kreb’s cycle?
19. What type of fermentation do yeast undergo?
20. What is the overall equation of aerobic cellular respiration?
21. How many NADH, FADH2 and ATP are produced per glucose molecule in the Kreb’s Cycle?
22. What is the final electron acceptor in the electron transport chain and describe what happens?
23. Where does the ETC occur in the cell?
24. How many molecules of ATP are produced via oxidative phosphorylation?
SBI 4U Metabolic Processes Review Questions
1.36 ATP
2. Oxidative phosphorylation is the process of forming ATP through a series of redox reactions (e.g.
ETC)
3. Substrate-level phosphorylation is the process of forming ATP directly through an enzyme
catalyzed reaction
4. Removal of CO2, oxidized by NAD+ and attachment of coenzyme A
5. Mitochondrial matrix
6. 3 ATP
7. 2 ATP
8. Glycolysis occurs in the cytosol
9. Pyruvate Oxidation, Kreb’s Cycle and the Electron Transport Chain
10. NADH Reductase (or Dehydrogenase), coenzyme Q (ubiquinone), Cytochrome b1c1 complex,
cytochrome c, cytochrome c oxidase
11. 2 molecules of pyruvate (pyruvic acid)
12. Energy is absorbed in a chemical reaction
Energy of the products < energy of the reactants
13. Energy is released in a chemical reaction
Energy of the products > energy of the reactants
14. Protein that acts as a catalyst that helps to speed up a chemical reaction
15. Oxidation – when a substance loses an electron
e.g. NADH becomes NAD+, FADH2 becomes FAD
16. Activation energy is the minimum amount of energy to start a reaction
17. Electrons stop at cytochrome c oxidaase
18. Acetyl coA
19. Ethanol Fermentation
20. C6H12O6 + 6O2 à 6 CO2 + 6H2O
21. Per glucose molecule: 6 NADH, 2 FADH2 and 2 ATP
22. Oxygen accepts the electrons to become water
23. Inner mitochondrial membrane (cristae)
24. 32 ATP molecules