A researcher compares aerobic respiration and photosynthesis. In the light-dependent reactions of photosynthesis, which molecule serves as the ultimate source of electrons?
Q1. A researcher compares aerobic respiration and photosynthesis. In the light-dependent reactions of photosynthesis, which molecule serves as the ultimate source of electrons?
Answer: Water
Explanation: Water provides electrons for PSII in photosynthesis. Option B is incorrect because glucose is the product of photosynthesis, not the electron donor.