The carriers for the electron transport system are located ______
A
within the cytoplasm of a cell
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B
on the cristae of mitochondria
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C
within the matrix of mitochondria
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D
within the Golgi apparatus
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Solution
The correct option is B
on the cristae of mitochondria
A crista is a fold in the inner membrane of a mitochondrion. Cristae are studded with proteins, including ATP synthase and a variety of cytochromes. They increase the surface area of the inner membrane on which the electron transport takes place. The high surface area allows greater capacity for ATP generation.