Practice Biochemistry Assessment Multiple Choice Questions with Answers Quiz-1 - MCQGeeks.com

Q.1.

Protein that contains a nucleic acid derivative of riboflavin is called _________

a) Nucleic acid
b) Amino acid
c) Flavoprotein
d) None

Explanation

Q.2.

NADP-linked dehydrogenase catalyzes _________

a) Glucose 6-phosphate+NADP+ ↔ 6-phosphogluconate + NADPH + H+
b) Lactate + NAD+ ↔ pyruvate + NADH + H+
c) Pyruvate + CoA + NAD+ ↔ acetyl-CoA + CO2 + NADH + H+
d) L-Malate + NAD+ ↔ oxaloacetate + NADH + H+

Explanation

Q.3.

A lipid-soluble benzoquinone with a long isoprenoid side chain is?

a) Ubiquinone
b) Cytochrome b
c) Cytochrome c
d) Cytochrome a

Explanation

Q.4.

The only membrane bound enzyme in the citric acid cycle is _________

a) Succinate dehydrogenase
b) NADH dehydrogenase
c) ATP synthase
d) Acyl co-A dehydrogenase

Explanation

Q.5.

The first step in the β oxidation of fatty acyl co-A is catalyzed by _________

a) Succinate dehydrogenase
b) NADH dehydrogenase
c) ATP synthase
d) Acyl co-A dehydrogenase

Explanation

Q.6.

Complex 1 is also called _________

a) NADH dehydrogenase
b) Succinate dehydrogenase
c) Cytochrome bc1 complex
d) Cytochrome oxidase

Explanation

Q.7.

Complex 2 is also called _________

a) NADH dehydrogenase
b) Succinate dehydrogenase
c) Cytochrome bc1 complex
d) Cytochrome oxidase

Explanation

Q.8.

Complex 3 is also called _________

a) NADH dehydrogenase
b) Succinate dehydrogenase
c) Cytochrome bc1 complex
d) Cytochrome oxidase

Explanation

Q.9.

Complex 4 is also called _________

a) NADH dehydrogenase
b) Succinate dehydrogenase
c) Cytochrome bc1 complex
d) Cytochrome oxidase

Explanation

Q.10.

In mitochondria, hydride ions are removed from substrates by _________

a) NAD-linked dehydrogenases
b) NADP-linked dehydrogenases
c) ATP synthase
d) Succinate dehydrogenases

Explanation