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Question

Cytochrome c:

A
is a haem protein
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B
accepts an electron from cytochrome c oxidase in the mitochondrial electron-transfer chain
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C
is a non-haem protein
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D
is irreversibly oxidized in the mitochondrial electron-transfer chain
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Solution

The correct option is A is a haem protein
The cytochrome complex is a small hemeprotein found loosely associated with the inner membrane of the mitochondrion.
It s an essential component of the electron transport chain and transfers an electron from Complexes III (Coenzyme Q – Cyt C reductase) to IV (Cyt C oxidase).

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