Chemistry for Biologists

Photosynthesis

1. If light intensity increases in an atmosphere of excess carbon dioxide, the limiting factor on the rate of photosynthesis is most likely to be:
light intensity
chlorophyll type
carbon dioxide concentration
temperature
2. In the light-independent stage carbohydrate is synthesized from:
ADP
NAPD
PGA
ATP
3. Phosphoglyceric acid (PGA) is formed when carbon dioxide is fixed onto the 5C compound:
edenosine triphosphate
nicotinamide adenine dinucleotide phosphate
ribulose bisphosphate
adenosine monophosphate
4. The first stable product of the Calvin Cycle is:
NAPD
ADP
ATP
PGA
5. The greenhouse effect is likely to:
decrease the rate of photosynthesis globally
increase the rate of photosynthesis globally
reduce the rate at which carbon is incorporated into carbohydrate globally
have no effect on the rate of photosynthesis globally
6. In photosynthesis, carbohydrates are produced during:
the light-dependent stage
the light-independent stage
cyclic phosphorylation
non-cyclic phosphorylation
7. In photosynthesis, oxygen is produced during:
cyclic phosphorylation
the light reactions
the light-dependent stage
non-cyclic phosphorylation
8. In photosynthesis, carbon dioxide is fixed during:
cyclic phosphorylation
the light-independent stage
the light-dependent stage
non-cyclic phosphorylation
9. In photosynthesis, excited electrons leave a chlorophyll molecule during:
the light-independent stage
the light-dependent stage
non-cyclic phosphorylation
cyclic phosphorylation
10. The two principal stages of photosynthesis are:
photosystem I and photosystem II
cyclic and non-cyclic phosphorylation
the light-dependent and light-independent reactions
photolysis and ATP synthesis

 

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