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

 

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