Reactions that require CO2 take place in ________.
A) the light reactions alone
B) the Calvin cycle alone
C) both the light reactions and the Calvin cycle
D) neither the light reactions nor the Calvin cycle
E) the chloroplast, but not as part of photosynthesis

Question

Quizplus · Accepted Answer

The Calvin cycle is the only process in photosynthesis that requires CO2, as it uses it to form organic molecules from the products of the light reactions. The light reactions themselves do not involve CO2, as their purpose is to produce ATP and NADPH to power the Calvin cycle.

Reactions That Require CO2 Take Place in ________