Question

which statement correctly describes a product of a reaction within photosynthesis?

a. oxygen is produced during the calvin cycle.
b. carbon dioxide is produced during the light reactions.
c. nadph is produced during the calvin cycle.
d. atp is produced during the light reactions.

Explanation:

In photosynthesis, oxygen is produced during light - reactions, not Calvin cycle. Carbon dioxide is a reactant, not a product of light - reactions. NADPH is produced in light - reactions and used in Calvin cycle. ATP is indeed produced during light - reactions through photophosphorylation.

Answer:

D. ATP is produced during the light reactions.