3
QuizMultiple Choice

Light Independent Reactions in Photosynthesis

Question 3 • HVA 26-27 IM Biology A

Which statement about the light-independent reactions in photosynthesis is true?

Answer
A
They occur in the thylakoids.
B
They produce ATP and NADPH.
C
They release oxygen as waste.
D
They comprise the Calvin cycle.

Explanation

The light-independent reactions are the Calvin cycle, which uses carbon dioxide along with ATP and NADPH to help build sugars. They occur in the chloroplast stroma, not in the thylakoids. ATP, NADPH, and oxygen are produced during the light-dependent reactions, so choices A, B, and C describe those reactions incorrectly.

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