Question

What molecule is a reactant in the first step and a final product in the fourth step of the Calvin Benson cycle?

Answer 1

G3P

Explanation:

G3P is the molecule which sits at both the end of the cycle and the beginning. This G3P is used either to make glucose or to regenerate RuBP. This RuBP is the molecule that the key enzyme RuBisCO can use.