AP Biologymediummcq1 pt

Which statement best describes the relationship between photosynthesis and cellular respiration?

A.They are the same biochemical pathway running backward with identical enzymes
B.Both pathways release oxygen as their main terminal product
C.Their overall matter flows are complementary, but the pathways are not simple reverses
D.Neither pathway uses membrane-associated electron transport reactions

Explanation

Core Concept

At the ecosystem level, products of photosynthesis can serve as reactants for respiration and vice versa. But the pathways are not simply the same reactions in reverse: they use different enzymes, compartments, electron carriers, and energy-conversion mechanisms.

Correct Answer

CTheir overall matter flows are complementary, but the pathways are not simple reverses

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