15
QuizMultiple Choice

Cell Cycle — Unit test

Question 15 • First Semester Biology

At which point is G3P removed from the Calvin cycle to be used in the production of carbohydrates?

Answer
A
during photophosphorylation
B
during carbon fixation
C
immediately after reduction
D
immediately after regeneration

Explanation

In the Calvin cycle, 3-PGA is reduced to G3P using ATP and NADPH. Some of that G3P leaves the cycle immediately after this reduction step to help make carbohydrates; the rest continues through the cycle to regenerate RuBP. Therefore, the correct choice is “immediately after reduction.”

AI-written and checked against the verified answer.

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