Which of the following biomolecules is common to respiration-mediated breakdown of fats, carbohydrates and proteins?

1.	Glucose-6-phosphate
2.	Fructose 1, 6-bisphosphate
3.	Pyruvic acid
4.	Acetyl Co-A

Which of the following complex of mitochondrial ETS possess two copper centers?

1. Cytochrome b ${\mathrm{c}}_1$ complex.

2. NADH dehydrogenase complex

3. Succinate dehydrogenase complex

4. Cytochrome c oxidase complex

Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalyzed by:

1. Phosphofructokinase

2. Aldolase

3. Hexokinase

4. Enolase

Complete the given reaction of the cycle present in the mitochondrial matrix:

$\mathrm{A}+\mathrm{Acetyl}$ $\mathrm{CoA}+{\mathrm{H}}_2\mathrm{O}\stackrel{\mathrm{B}}{\to }\mathrm{Citric}$ $\mathrm{acid}$

1. A—Succinic acid; B—Pyruvate dehydrogenase.

2. A—Malic acid; B—Transacetylase.

3. A—OAA; B—Citrate synthase.

4. A— $\alpha$ -KGA; B$\alpha$ Thiokinase.

During the process of respiration redox equivalents are removed:

1. In form of hydrogen atom.

2. In form of an electron.

3. In form of H₂O.

4. In form of ATP.

$\mathrm{Pyruvic} \mathrm{acid} +\mathrm{CoA}+{\mathrm{NaD}}^{+}\stackrel{\mathrm{A}}{\to }$
$\mathrm{B}+{\mathrm{CO}}_2+{\mathrm{NADH}}^{+}+{\mathrm{H}}^{+}$ in the above given reaction of respiration what can be placed at the place of A and B respectively?

1. Iron and Citric acid.
2. Magnesium and Citric acid.
3. Dehydrogenase and Acetyl CoA.
4. Iron and Acetyl CoA

NADH synthesized in glycolysis of aerobic respiration
is transferred into

1. Cytoplasm for oxidative phosphorylation.
2. Mitochondria for oxidative phosphorylation.
3. Mitochondria for photo oxidation.
4. ETS for photo oxidation.

Presence of oxygen is vital in aerobic respiration because:

1. It drives the whole process by removing hydrogen from ETS.

2. Oxygen causes phosphorylation which is light stimulated.

3. Oxygen directly stimulates complex V to generate ATP.

4. Oxygen is the initial electron acceptor.

When two molecules of glucose are completely oxidized in aerobic respiration, how many ATPs are generated through $FAD{H}_2$?

1. 6

2. 15

3. 8

4. 4

Read the following statements:

(a) $F_0$ part of ATPase is associated with breakdown of proton gradient

(b) A H-carrier contributes in creation of proton gradient

(c) Movement of electrons in ETS is coupled to pumping of protons into the lumen

(d) Formation of NADPH + $H^{+}$ is related with the creation of proton gradient

How many of the above statements are correct?

1. Two 

2. One

3. Four

4. Three