Biology

Question

Why does the space inside the thylakoid become positively charged during the light-dependent reaction

A. ATP synthase pushes H* ions from the stroma across the membrane into the space

B. H* ions build up in the space as water is split

C. Electrons have a + charge and are released here by Photosystem I

D. Carbon dioxide builds up in the stroma

Answer

A. ATP synthase pushes H+ ions from the stroma across the membrane into the space.

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During the light-dependent reactions of photosynthesis, the thylakoid membrane pumps hydrogen ions (H+) from the stroma into the thyl...