A) matrix of mitochondria
B) outer wall of mitochondria
C) cristae of mitochondria
D) lysosomes
Correct Answer: C
Solution :
Cytochromes are present on the cristae, i.e. inner foldings of mitochondria. Cytochromes are iron (heme) containing proteins primarily responsible for transfer of electrons in ETC from ubiquinone to complex-V for generation of ATP (energy molecules) and terminal acceptor \[{{O}_{2}}\] in electron transport chain. They are also called respiratory pigments, which are capable of performing both the oxidation and reduction reactions.
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