Question

what is the main purpose of the light - dependent reactions?
o to energize electrons
o to make oxygen
o to produce carbon dioxide
o to make glucose

Explanation:

In photosynthesis, light - dependent reactions occur in the thylakoid membranes. They use light energy to excite electrons from water. As electrons are energized, they move through electron - transport chains, generating ATP and NADPH. Oxygen is a by - product of splitting water, not the main purpose. Carbon dioxide is used in the Calvin cycle (light - independent reactions), not produced in light - dependent reactions. Glucose is made in the Calvin cycle using ATP and NADPH from light - dependent reactions. The main goal of light - dependent reactions is to energize electrons to produce ATP and NADPH for the Calvin cycle.

Answer:

to energize electrons