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

 

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