Question

what is common to both photosystems i and ii? multiple choice both contain a reaction center composed of chlorophyll a both involve the splitting of water to donate an electron to the reaction center both involve the generation of oxygen both lose an electron to a primary electron acceptor that passes the electron down an electron transport chain leading to the generation of atp both are found in the stroma

Explanation:

Photosystem I and II are both part of the light - dependent reactions of photosynthesis. They each have a reaction center with chlorophyll a. Only photosystem II involves the splitting of water and generation of oxygen. Both lose an electron to a primary electron acceptor which passes it down an electron - transport chain (photosystem II contributes to ATP generation and photosystem I to NADPH generation). Photosystems are located in the thylakoid membrane, not the stroma.

Answer:

Both contain a reaction center composed of chlorophyll a