Question

Sequence of cytochromes in respiratory chain is ______.

Options

• cyt - a, b, c, a₃

• cyt - b, c, c₁, a₃

• cyt - b, a, a₃, c

• cyt - b, c₁, a₃, c

Answer 1

cyt - b, c₁, a₃, c

Explanation:

Cytochromes are classified as a, b, or c based on distinctions in their light absorption spectra. Cytochromes a and b are embedded in the inner mitochondrial membrane, while cytochrome C is only loosely connected with the membrane. The electron carrier sequence is as follows. 
cyt b, cyt c₁, cyt c, cyt a and cyt a₃