Download Biology: Cellular Respiration Practice Problems

Biology: Cellular Respiration Practice Problems
1. What are the 2 metabolic pathways a cell can use and what determines which pathway is used?
2. Write the overall equation for aerobic cellular respiration.
3. What are the 3 phases of the aerobic cellular respiration process?
4. Where in the cell does the glycolysis part of cellular respiration occur? Why?
5. Where in the cell does the Krebs (Citric Acid) cycle part of cellular respiration occur? Why?
6. Where in the cell does the electron transport part of cellular respiration occur? Why?
7. How many ATP are made in the glycolysis part of cellular respiration?
8. How many ATP are made in the Kreb’s cycle part of cellular respiration?
9. How many ATP are made in the electron transport part of cellular respiration?
10. In which phase of cellular respiration is carbon dioxide made?
11. What are NAD+ and FAD? What do they do and what do they become?
12. In which phase of cellular respiration is water made?
13. What would happen to the cellular respiration process if the enzyme (aka catalyst) for one step of the process was
missing or defective?
14. On average, how many ATP can be made from each NADH during the electron
transport process?
15. On average, how many ATP can be made from each FADH2 during the electron
transport process?
16. What would happen to the cellular respiration process if the enzyme for one step of the process were missing or
defective?
Honors Biology: Cellular Respiration Worksheet
17. What are the 2 metabolic pathways a cell can use and what determines which pathway is used?
Aerobic respiration & anaerobic respiration; they depend on the presence or absence of oxygen
18. Write the overall equation for aerobic cellular respiration.
Aerobic: Glucose + oxygen yields carbon dioxide + water + energy
19. What are the 3 phases of the aerobic cellular respiration process?
Aerobic: Glycolysis & Kreb’s cycle/electron transport chain
20. Where in the cell does the glycolysis part of cellular respiration occur? Why?
Cytoplasm; the necessary enzymes are located there
21. Where in the cell does the Krebs (Citric Acid) cycle part of cellular respiration occur? Why?
Mitochondrial matrix; the necessary enzymes are located there
22. Where in the cell does the electron transport part of cellular respiration occur? Why?
Mitochondrial membrane/cristae; increased surface area for more ATP production
23. How many ATP are made in the glycolysis part of cellular respiration?
2
24. How many ATP are made in the Kreb’s cycle part of cellular respiration?
2
25. How many ATP are made in the electron transport part of cellular respiration?
32
26. In which phase of cellular respiration is carbon dioxide made?
Kreb’s cycle and pyruvate decarboxylation
27. What are NAD+ and FAD? What do they do and what do they become?
They are electron carriers in the ETC; they become NADH and FADH2
28. In which phase of cellular respiration is water made?
ETC
29. What would happen to the cellular respiration process if the enzyme (aka catalyst) for one step of the process was
missing or defective?
The process would stop and no more products would be made
30. On average, how many ATP can be made from each NADH during the electron
transport process?
3
31. On average, how many ATP can be made from each FADH2 during the electron
transport process?
2
32. What would happen to the cellular respiration process if the enzyme for one step of the process were missing or
defective?
The entire process beyond that point could not happen.