ATP Synthase

Q. How many molecules of ATP is produced from one molecule of ${\mathrm{FADH}}_2$?

1. 1
2. 3
3. 2
4. 4

Q.

What is the chemiosmotic theory of ATP production?

Q. Oxysomes are present in

1. outer membrane of mitochondria
2. inner membrane of mitochondria
3. thylakoid matrix
4. thylakoid membrane

Q.

Where is ATP produced in the mitochondria?

Q. Which one of the following is complex V of the ETC present in the inner mitochondrial membrane?

1. NADH dehydrogenase
2. Cytochrome oxidase
3. Ubiquinone
4. ATP synthase

Q. What is the function of ATP synthase?

1. Synthesize NADPH
2. Both a and b
3. Synthesize ATP
4. Hydrolysis of ATP

Q. __________ enzyme synthesises ATP from ADP.

1. ATP synthase
2. Hexokinase
3. Isomerase
4. Pyruvate kinase

Q.

Mitochondrial component connected with ATP synthesis is

1. Inner membrane

2. Outer membrane

3. Matrix

4. F0–F1 particles

Q. In germinating seeds of castor, RQ is:

1. Zero
2. Less than one
3. One
4. More than one

Q. In which part of the mitochondria does ATP synthesis occur?

1. Matrix
2. Intermembrane space
3. Outer mitochondrial membrane
4. Inner membrane of mitochondria

Q. The complex concerned with oxidative phosphorylation in the inner mitochondrial membrane is:

1. Complex IV
2. Complex V
3. Complex III
4. Complex II

Q. __________ enzyme synthesises ATP from ADP.

1. ATP synthase
2. Hexokinase
3. Isomerase
4. Pyruvate kinase

Q. Oxidation of one molecule of NADH gives ______.

1. 3 ATP molecules
2. 12 ATP molecules
3. 1 ATP molecule
4. 8 ATP molecules

Q. ATP synthase consists of

1. $C{F}_1$ and $C{F}_2$
2. $C{F}_2$ and $F_0$
3. $C{F}_0$ and $C{F}_1$
4. $CF$ and $C{F}_1$

Q. Protons accumulate inside the lumen of thylakoids due to

1. splitting of water
2. formation of NADPH
3. formation of ATP
4. both a and b

Q. Which one of the following is an incorrect statement about mitochondrial ETC and oxidative phosphorylation?

1. Enzyme complex I accepts electrons and $H^{+}$ from NADH and $FAD{H}_2$
2. Passage of protons through the channel is coupled to the catalytic site of the $F_0-F_1$ particle for ATP production
3. Cytochrome-c is a mobile protein attached on the outer surface of the inner membrane
4. $6H^{+}$ ions pass through $F_0$ from intermembrane space to the matrix down the electrochemical proton gradient to produce 3 ATP molecules

Q. The mechanism of ATP formation both in chloroplast and mitochondria is explained by ______.

1. Relay pump theory of Godlewski
2. Munch’s pressure/mass flow model
3. Cholondy – Went’s model
4. Chemiosmotic theory of Mitchell

Q. ________ process fuelled by the ETC, drives the synthesis of ATP.

1. Chemiosmosis
2. Phosphorylation
3. Glycolysis
4. Fermentation

Q. How many molecules of ATP is produced from one molecule of ${\mathrm{FADH}}_2$?

1. 1
2. 2
3. 3
4. 4

Q. Which one of the following is an incorrect statement about mitochondrial ETC and oxidative phosphorylation?

1. Enzyme complex I accepts electrons and $H^{+}$ from NADH and $FAD{H}_2$
2. Passage of protons through the channel is coupled to the catalytic site of the $F_0-F_1$ particle for ATP production
3. Cytochrome-c is a mobile protein attached on the outer surface of the inner membrane
4. $6H^{+}$ ions pass through $F_0$ from intermembrane space to the matrix down the electrochemical proton gradient to produce 3 ATP molecules

Q. An electrochemical gradient across the membranes of thylakoid is required for the synthesis of by the chloroplast.

1. proteins
2. ATP
3. cAMP
4. sugar

Q. Which of the following is correct with respect to ATP synthase?

1. It is an active transport pump.
2. It is a facilitated diffusion channel.
3. It is a passive transport channel.
4. Both b and c are correct.

Q. The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that ATP is formed because:

1. High energy bonds are formed in mitochondrial proteins.
2. ADP is pumped out of the matrix into the intermembrane space.
3. A proton gradient forms across the inner membrane.
4. There is a change in the permeability of the inner mitochondrial membrane towards ADP.