Question

The CORRECT combination of statements with respect to oxidative phosphorylation is 

1. Cytochrome 'C' oxidase complex contains cytochromes a and a3, and two cobalt centers.
2. Cytochrome 'C' is a small mobile electron carrier protein.
3. Oxidation of NADH2 and FADH2 give rise to 3 molecules of ATP.
4. Light energy is not utilized for the production of proton gradient required for phosphorylation.

Options

• I and II

• II and III

• Ill and IV

• II and IV

Answer 1

II and IV

Explanation:

The cytochrome c oxidase complex IV contains cytochromes a and a 3 as well as two copper centers. When NADH + 1-r or F ADH2 are oxidized, their electron enters ETS, causing a proton gradient that leads to the production of ATP in the Fo-F1 particle.