A) Mg pyrole ring
B) Fe porphyrin ring
C) nucleotide
D) alloy of nichrome
Correct Answer: B
Solution :
Cytochromes are iron-containing heme prosthatic groups. They are most important electron carriers of the respiratory chain which are related with each other by the presence of a bound heme group whose iron^atom changes from ferric \[(F{{e}^{+3}})\] state to ferrous \[(F{{e}^{+2}})\] state when it accepts an electron. The heme group of cytochromes consists of a porphyrin ring holding an iron atom with its four nitrogens.You need to login to perform this action.
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