Question

1. Select the TRUE statement about the component of the electron transport chain.

A. Complex III is a peripheral membrane protein

B. Cytochrome c is a lipid-linked protein

C. Complex II is a transmembrane protein

D. Complex I is an integral membrane protein

E. Complex IV is not a transmembrane protein

2. The rate of oxygen consumption at the inner mitochondrial membrane is related to all the following EXCEPT:

A. Availability of ADP in the mitochondria

B. The rate of ATP phosphorylation to ADP

C. The availability of NADH and FADH2 in the mitochondria.

D. The rate of the citric acid cycle

E. The rate of O2 delivery to the mitochondria

3. The β-Oxidation of hexanoic CoA (6:0) yields:

A. 6 Acetyl-CoA + 6 FADH2 + 6 NADH

B. 6 Acetyl-CoA + 7 FADH + 6 NAD+

C. 6 Acetyl-CoA + 5 FADH2 + 5 NADH

D. 5 Acetyl-CoA + 5 FADH2 + 5 NADH

E. 5 Acetyl-CoA + 6 FADH2 + 6 NADH

Answer 1

Answer 1

Correct statement is C. Complex II is a transmembrane protein.

Reason: All the four complexes of Electron transport chain are trans membrane except complex V which is a peripheral protein.

Answer 2

Correct answer is B) The rate of ATP phosphorylation to ADP.

Reason: ATP cannot be phosphorylated further.