Question

question 33
how many co₂ molecules are required to produce the end - product of the calvin cycle?
○ a. 2
○ b. 1
○ c. 3
○ d. 6
○ e. 0

Explanation:

The Calvin Cycle (light - independent reactions of photosynthesis) has a key product, glyceraldehyde - 3 - phosphate (G3P). For every 3 molecules of \(CO_2\) that enter the Calvin Cycle, 1 molecule of G3P (a 3 - carbon sugar, which is the end - product used to make glucose and other organic molecules) is produced. This is based on the stoichiometry of the Calvin Cycle reactions where \(CO_2\) is fixed, reduced, and then a molecule of G3P is released while the rest of the carbon is used to regenerate the \(CO_2\) acceptor (RuBP).

Answer:

C. 3