Question

This is for biochem. Please answer and explain why?

As a representation of the respiratory chain, what is wrong with this picture? There are 4 deliberate errors. Select all that apply NADHFAD ног Coa 1. NADH is oxidized by FMN, not FAD. 2. NADH is oxidized by CoQ, not FAD. 3. Reduced flavin (FADH2 or FMNH2) is oxidized by CoQ, not CoQH2. 4. O2 is reduced to H2O, not H202 5. Cyt c, accepts e-from cyt a-a3, and is then oxidized by cyt b. 6. O2 is oxidized to H2, not H202 7. Reduced flavin (FADH2 or FMNH2) is oxidized by CoQH, not CoQH2 8. Cyt c1 accepts e from cyt b, and is then oxidized by cyt c

Answer 1

1. NADH is oxidized by FMN, which is a part of Complex I, not FAD.

3. Reduced flavin(FADH₂ or FMNH₂) is oxidized by CoQ, not CoQH₂ because CoQ accepts the electrons from FADH₂ and oxidized it to FAD.

8. Cyt C1 accepts an electron from Cyt b and is then oxidized by Cyt C, not from Cyt a-a₃.

4. Water is reduced to H₂O, not H₂O₂.

Thank you...:)