Photosynthesis Review

1. What is the meaning of the word photosynthesis?

2. The end products of photosynthesis are
a) glucose and carbon dioxide (b) water and carbon dioxide (c) glucose and oxygen (d) water and oxygen

3. The energy conversion in photosynthesis occurs in three stages. What are they?

4. Summarize the events of the light reactions.

5. What are the products of the light reactions?

6. In what part of the chloroplast do the light reactions take place?

7. Where in the chloroplast is chlorophyll located?

8. What is the term for the stacks of disks seen in plants?

9. What is the term for the fluid surrounding these stacks?

10. What function is served by chlorophyll?

11. What molecule carries hydrogen and electrons during photosynthesis?

12. Where does the Calvin cycle occur?

13. What is the function of the Calvin cycle?

14. State the products of the Calvin cycle.

15. Carbon fixation changes ___ into ___.

16. What is the source of the oxygen released during photosynthesis?

17. Where does the carbon for making glucose come from?

18. What is the purpose of the electron transport chain in photosynthesis?

19. How do the electrons accepted by the ETC become high energy?

20. Where in the cell does the ETC occur?

21. What is the source of electrons to replace those lost from photosystem II?

22. What is the source of electrons to replace those lost from photosystem I?

23. Which of the following takes place during carbon fixation?
a) water is split (b) ATP is formed (c) chlorophyll becomes excited (d) 3C compound

24. Which of the following may NOT be formed by the 3C compound?
a) simple sugars (b) chlorophyll (c) starting material for Calvin (d) these all may be formed

25. What happens to the ATP produced in chloroplasts?

26. Why does the primary electron acceptor have to be so close to chlorophyll?

27. When plants photosynthesize, they always make more glucose than they require for food. Explain.

28. Which of the following is NOT a true statement about the process of photosynthesis?
a) Energy is stored in the glucose molecule (b) Oxygen is a waste product (c) Water and carbon dioxide are needed (d) The process takes place in the mitochondria.

29. The green colour of certain plant parts is due to
a) the presence of centrioles (b) the absence of vacuoles (c) the number of chloroplasts (d) none of the above

30. How are the general formulas for photosynthesis and cellular respiration related?

31. During photosynthesis sunlight strikes the chlorophyll resulting in
a) a series of chemical reactions occurring (b) absorption of red, orange, blue and violet light (c) excited electrons being produced (d) all of above