Question

Which element is present in cytochrome?

• A. Magnesium
• B. Iron
• C. Calcium
• D. Potassium

Hint:

Iron in the heme group of cytochromes enables their role in cellular respiration and energy production by facilitating electron transport in the mitochondria.

Answer 1

The Correct Option is B

Cytochromes are a group of heme-containing enzymes that play a key role in electron transport in cells, particularly in mitochondria. The heme group within cytochromes contains an iron (Fe) atom, which is essential for their function in redox reactions. The iron atom in cytochromes undergoes reversible oxidation and reduction, which is crucial for the electron transfer in cellular respiration. Thus, the correct answer is (b) Iron.