14
QuizMultiple Choice

Light Independent Reactions in Photosynthesis

Question 14 • HVA 26-27 IM Biology A

Which compound is a metabolic intermediate of the light-independent reactions in photosynthesis?

Answer
A
ATP
B
PGA
C
RuBP
D
NADPH

Explanation

PGA (3-phosphoglycerate) is formed during the Calvin cycle, the light-independent reactions, and is then converted into other cycle products. ATP and NADPH provide energy and reducing power, while RuBP is the carbon dioxide acceptor that is regenerated in the cycle. The metabolic intermediate asked for is PGA.

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