Question

question 18 of 25
which is a reactant in the calvin cycle?
a. water
b. carbon dioxide
c. glucose
d. oxygen

Explanation:

The Calvin cycle is part of photosynthesis. In the Calvin cycle, carbon dioxide ($CO_2$) is fixed. Water is mainly involved in the light - dependent reactions (splitting of water for electrons, protons, and oxygen production). Glucose is a product of the Calvin cycle (after further processing of the initial products like glyceraldehyde - 3 - phosphate). Oxygen is a by - product of the light - dependent reactions (from water splitting). So, carbon dioxide is a reactant in the Calvin cycle.

Answer:

B. Carbon dioxide