Unit 3 Photosynthesis, Glycolysis & Cellular Respiration
Practice Questions
1. What types of reaction make or form new compounds? What types of reactions break down compounds?
2. Where is energy stored in an ATP molecule? How is the energy released?
3. Why do leaves appear green?
4. Draw a simple diagram of a chloroplast and label the outer membrane, the grana, and the stroma.
5. What part of photosynthesis occurs in the grana of the chloroplast? What part occurs in the stroma?
6. Why do leaves change colors in the fall?
7. What is the overall purpose of photosynthesis? Why is photosynthesis necessary?
8. Where does the energy that starts photosynthesis come from? What part of the chlorophyll absorbs this
energy?
9. Complete the following chart:
Light reactions or Calvin
Substance
Cycle
Water
Used or Produced?
Purpose in photosynthesis
Oxygen
Carbon
Dioxide
G3P Glucose
10. What is role of ATP in photosynthesis? When is ATP made in the process?
11. What is the role of NADPH in photosynthesis? When is it made in the process?
12. What enzymes are involved in photosynthesis? What is their role in the process?
13. What is the purpose of the Light Reactions?
14. What is the purpose of the Calvin Cycle?
15. Draw a simple diagram of a mitochondrion. Label the outer membrane, cristae, and matrix.
16. What part of cellular respiration occurs in the cytoplasm? What parts occurs in the mitochondria?
17. What is the purpose of NADH and FADH2 in cellular respiration? What compound in photosynthesis has
the same function?
18. Complete the following chart:
Glycolysis, Junction
Step, Citric Acid Cycle
Substance
or Electron Transport
Chain?
Water
Used or Produced?
Purpose in cellular respiration
Oxygen
Carbon
Dioxide
Glucose
19. What is the overall purpose of cellular respiration?
20. Why is oxygen necessary for aerobic respiration? What would happen if oxygen couldn’t complete its
role in the process?
Mrs. Rippin
Page 1 of 2
9/19/13
21. What step of cellular respiration occurs with or without the presence of oxygen?
22. Is more ATP produced in cellular respiration when oxygen is present or when oxygen is not present?
(anaerobic vs. aerobic)
23. What two types of respiration can occur when oxygen is not present?
Which type happens when you run fast?
How do the two types differ?
24. When is glucose split during cellular respiration?
25. What stage of aerobic respiration produces the most ATP?
26. Name the two enzymes used in photosynthesis. Which one of these enzymes is also used in cellular
respiration? What is its purpose?
27. Compare and contrast photosynthesis and cellular respiration. Be sure to include at least two similarities
and two differences.
Mrs. Rippin
Page 2 of 2
9/19/13