Question Detail

BIO 101 BIO 101 Past Questions Objective Question

Question

What is the purpose of photolysis during photosynthesis?
Options
A To generate glucose
B To provide electrons for Photosystem II
Correct Answer
C To absorb light in Photosystem I
D To reduce carbon dioxide
Correct Answer

Option B is the correct answer.

Detailed Explanation

Photolysis ('splitting by light') of water at the oxygen-evolving complex of PSII replaces electrons lost by the reaction center chlorophyll, releasing oxygen as a byproduct.

Hint

It's the source of the electrons that start the electron transport chain.

Question Info