51) ATP is required during which of the following reactions?
51) ______
A) the Calvin cycle only
B) the light reactions only
C) both the light reactions and the Calvin cycle
D) neither the light reactions nor the Calvin cycle
52) Enzymes are required during which of the following reactions?
52) ______
A) the light reactions only
B) the Calvin cycle only
C) both the light reactions and the Calvin cycle
D) neither the light reactions nor the Calvin cycle
53) Water is required to drive which of the following reactions?
53) ______
A) the Calvin cycle only
B) the light reactions only
C) both the light reactions and the Calvin cycle
D) neither the light reactions nor the Calvin cycle
54) NADPH is synthesized during which of the following reactions?
54) ______
A) the light reactions only
B) the Calvin cycle only
C) both the light reactions and the Calvin cycle
D) neither the light reactions nor the Calvin cycle
55) In the C3 pathway, where does the carbon come from to form glucose?
55) ______
A) enzymes
B) water
C) atmospheric CO2
D) ATP and NADPH
E) chlorophyll
56) In the reduction of CO2 during C4 photosynthesis, which of the following initially combines with CO2?
56) ______
A) PEP
B) NADH
C) RuBP
D) PGA
E) PGAL
57) Where do the reactions of a C4 pathway occur in a plant such as corn?
57) ______
A) epidermal cells only
B) mesophyll cells only
C) bundle sheath cells only
D) bundle sheath and epidermal cells
E) mesophyll and bundle sheath cells
58) In the C4 pathway, what is the source of carbon?
58) ______
A) ATP
B) glucose
C) NADPH
D) water
E) carbon dioxide
59) What kind of habitat does a C4?pathway plant favor?
59) ______
A) wet and cloudy
B) cool and moist
C) cool and dry
D) totally aquatic
E) hot and dry
60) Photorespiration is detrimental for a plant because:
60) ______
A) CO2 is synthesized.
B) glucose is synthesized.
C) O2 is required.
D) no ATP is produced.
E) RuBP is degraded.
