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Biology Chapter 10

Question:

Which statement describes the functioning of photosystem II?

A) Light energy excites electrons in the electron transport chain in a photosynthetic unit.

B) The excitation is passed along to a molecule of P700 chlorophyll in the photosynthetic unit.

C) The P680 chlorophyll donates a pair of protons to NADPH, which is thus converted toNADP+.

D) The electron vacancies in P680 are filled by electrons derived from water.

E) The splitting of water yields molecular carbon dioxide as a by-product.



Answer:

D) The electron vacancies in P680 are filled by electrons derived from water.



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Last update by mayur on 03/27/2014
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Biology Chapter 10
Biology Chapter 10
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Free Flashcard From Biology Chapter 10
Question: Which statement describes the functioning of photosystem II? A) Light energy excites electrons in the electron transport chain in a photosynthetic unit. B) The excitation is passed along to a molecule of P700 chlorophyll in the photosynthetic unit. C) The P680 chlorophyll donates a pair of protons to NADPH, which is thus converted toNADP+. D) The electron vacancies in P680 are filled by electrons derived from water. E) The splitting of water yields molecular carbon dioxide as a by-product.
Answer: D) The electron vacancies in P680 are filled by electrons derived from water.