When oxygen is released as a result of photosynthesis, it is a direct by-product of
A) reducing NADP⁺.
B) splitting water molecules.
C) chemiosmosis.
D) the electron transfer system of photosystem I.
E) the electron transfer system of photosystem II.

Question

Quizplus · Accepted Answer

Oxygen is released as a direct by-product of photosynthesis when water molecules are split during the light-dependent reactions. This process is called photolysis or water splitting, and it occurs in photosystem II.

When Oxygen Is Released as a Result of Photosynthesis, It