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Q. Cytochrome is a

NTA AbhyasNTA Abhyas 2020Mineral Nutrition

Solution:

Cytochromes are iron-containing heme prosthetic groups. They are most important electron carries of the respiratory chain, which are related with each other by the presence of a bound heme group whose iron atom changes from ferric $\left(\right.Fe^{+ 3}\left.\right)$ state to ferrous $\left(\right.Fe^{+ 2}\left.\right)$ state when it accepts an electron. The heme group of cytochromes consists of a porphyrin ring holding an iron atom its four nitrogens.

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