Electron Transport Chain

Q.

How many ATP are produced in the electron transport chain?

Q. The connecting link reaction between glycolysis and Krebs cycle is _______.

1. phosphorylation
2. isomerisation
3. pyruvate oxidation
4. dehydration

Q. In a nerve cell, if sodium-potassium pumps are blocked, which of the following is most likely to happen?

1. $K^{+}$ inside the nerve cell will increase
2. $N{a}^{+}$ and $K^{+}$ will increase outside the cell
3. $N{a}^{+}$ outside the cell will increase
4. $N{a}^{+}$ inside the nerve cell will increase

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

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

Q.

Is any ATP produced in the electron transport chain?

Q. In a maize plant, which enzyme is used for fixing carbon dioxide to oxaloacetic acid?

1. Ribulose phosphate kinase
2. Fructose phosphate
3. Phosphoenol pyruvic acid carboxylase
4. Ribulose bisphosphate carboxylase

Q. The terminal electron acceptor during the electron transport chain is .

1. NADH
2. $O_2$
3. $C{O}_2$
4. $FAD{H}_2$

Q. In mitochondria, protons accumulate in _________.

1. outer membrane
2. inner membrane
3. intermembrane space
4. matrix

Q. Which one of the following is the terminal electron acceptor?

1. Molecular $C{O}_2$
2. Molecular $O_2$
3. Molecular $H_2$
4. $NADP{H}_2$