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:
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
3. The first stable product of the Calvin Cycle is:
PGA
ADP
NAPD
ATP
4. In the light-independent stage carbohydrate is synthesized from:
ATP
PGA
ADP
NAPD
5. Phosphoglyceric acid (PGA) is formed when carbon dioxide is fixed onto the 5C compound:
edenosine triphosphate
ribulose bisphosphate
adenosine monophosphate
nicotinamide adenine dinucleotide phosphate
6. In photosynthesis, excited electrons leave a chlorophyll molecule during:
non-cyclic phosphorylation
cyclic phosphorylation
the light-independent stage
the light-dependent stage
7. In photosynthesis, oxygen is produced during:
the light-dependent stage
non-cyclic phosphorylation
cyclic phosphorylation
the light reactions
8. In photosynthesis, carbon dioxide is fixed during:
the light-dependent stage
cyclic phosphorylation
the light-independent stage
non-cyclic phosphorylation
9. In photosynthesis, carbohydrates are produced during:
the light-dependent stage
the light-independent stage
cyclic phosphorylation
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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