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:
carbon dioxide concentration
light intensity
chlorophyll type
temperature
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. The first stable product of the Calvin Cycle is:
NAPD
ADP
ATP
PGA
4. Phosphoglyceric acid (PGA) is formed when carbon dioxide is fixed onto the 5C compound:
nicotinamide adenine dinucleotide phosphate
ribulose bisphosphate
edenosine triphosphate
adenosine monophosphate
5. In the light-independent stage carbohydrate is synthesized from:
ADP
NAPD
PGA
ATP
6. In photosynthesis, excited electrons leave a chlorophyll molecule during:
the light-dependent stage
cyclic phosphorylation
the light-independent stage
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, oxygen is produced during:
the light-dependent stage
the light reactions
cyclic phosphorylation
non-cyclic phosphorylation
9. In photosynthesis, carbohydrates are produced during:
the light-dependent stage
non-cyclic phosphorylation
cyclic phosphorylation
the light-independent stage
10. The two principal stages of photosynthesis are:
photosystem I and photosystem II
the light-dependent and light-independent reactions
photolysis and ATP synthesis
cyclic and non-cyclic phosphorylation

 

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