Identify a Product of the Light Reactions of Photosynthesis

Question

Identify a product of the light reactions of photosynthesis.
A) glucose
B) molecular oxygen
C) both glucose and molecular oxygen
D) neither glucose nor molecular oxygen

Accepted Answer

Molecular oxygen is produced during the light reactions of photosynthesis through the process of photolysis, where water is split into electrons, hydrogen ions, and molecular oxygen. Glucose is produced during the subsequent dark reactions (Calvin cycle) of photosynthesis.