Which mineral is associated with cytochromes?

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Question

(D) Cytochromes are iron-containing hemoproteins that act as electron carriers in the electron transport chain. The central metal ion in the heme grou

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$Fe$ and $Cu$

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(D) Cytochromes are iron-containing hemoproteins that act as electron carriers in the electron transport chain. The central metal ion in the heme group of cytochromes is $Fe$ (Iron). While copper $(Cu)$ is present in cytochrome c oxidase (Complex $IV$),the fundamental prosthetic group of all cytochromes is the iron-porphyrin complex. Therefore,$Fe$ is the primary mineral associated with cytochromes.

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