The electrons excited by sunlight in photosystem I are replaced by ________, and the electrons excited by sunlight in photosystem II are replaced by ________

A) electrons from water; electrons from water
B) electrons from water; electrons from photosystem I
C) electrons from water; electrons from carbon dioxide
D) electrons from photosystem II; electrons from water
E) electrons from carbon dioxide; electrons from water


Answer: D

Biology & Microbiology

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Which of the following describe source-sink metapopulations? 

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What do the bands on a restriction map show?

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There are three dietary monosaccharides. Glucose is one- what are the other two?

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