4
lesson pretestMultiple Choice

Pretest

Question 4 • CMS 2026-2027 Biology CREDIT RECOVERY

Which is the best description of photophosphorylation?

Answer
A
the absorption of light energy by chlorophyll
B
the conversion of ADP to ATP using light energy
C
the removal of a phosphate group from a molecule
D
the conversion of light energy to chemical energy

Explanation

Photophosphorylation is the process of adding a phosphate group to ADP to make ATP, powered by light energy. Therefore, the best description is “the conversion of ADP to ATP using light energy.” Absorbing light by chlorophyll is part of photosynthesis, but it does not define photophosphorylation.

AI-written and checked against the verified answer.

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