Question

multiple choice question what carries excited electrons from photosystem ii to photosystem i? o an enzyme that makes nadph o a water-splitting enzyme o atp synthase o an electron transport system

Explanation:

1. Analyze each option:

• "an enzyme that makes NADPH": This enzyme (like NADP+ reductase) is involved in making NADPH but not in transporting electrons between photosystems II and I.
• "a water - splitting enzyme": Its role is to split water in photosystem II to release electrons, protons, and oxygen, not to transport electrons between the two photosystems.
• "ATP synthase": It is responsible for synthesizing ATP using the proton gradient, not for electron transport between photosystems II and I.
• "an electron transport system": In the light - dependent reactions of photosynthesis, the electron transport system (also called the electron transport chain) carries the excited electrons from photosystem II to photosystem I.

Answer:

an electron transport system