Question

Which of the following does not function as an electron carrier [Kerala PMT 2004]
A) Coenzyme Q
B) Cytochrome-c
C) Cytochrome-a
D) Cytochrome-{{a}_{3}}

Answer 1

C) cytochrome a is not function as an electron carrier

Answer 2

Answer:

The correct answer is C) Cytochrome – a.

Explanation:

Cytochrome – a does not function as an 'electron carrier.'  

Electron carriers are certain molecules in the biological systems that carry and transfers an electron to aid in various processes like respiration, photosynthesis. Cytochromes are a group of proteins that contains a heme cofactor, thus aiding in the redox reactions from ferrous (Fe(II)) to 'ferric Fe(III)' oxidation states.  

Cytochrome - A help in Electron Transport Chain, 'Oxidative Phosphorylation', and other Oxygen Consuming Systems.