Which statement is wrong for Krebs’ cycle-1

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Q.
Which statement is wrong for Krebs’ cycle [2017]

1 There is one point in the cycle where ${FAD}^{+}$ is reduced to ${FADH}_{2}$ .

2 During conversion of succinyl CoA to succinic acid, a molecule of GTP is synthesised.

3 The cycle starts with condensation of acetyl group (acetyl CoA) with pyruvic acid to yield citric acid.

4 There are three points in the cycle where ${NAD}^{+}$ is reduced to NADH + $H^{+}$ .

Ans.
(3)

Krebs’ cycle starts with condensation of acetyl group (acetyl CoA) with oxaloacetate to form a tricarboxylic, 6-carbon compound called citric acid.

Solution

Q.
Which statement is wrong for Krebs’ cycle [2017]

1 There is one point in the cycle where ${FAD}^{+}$ is reduced to ${FADH}_{2}$ .

2 During conversion of succinyl CoA to succinic acid, a molecule of GTP is synthesised.

3 The cycle starts with condensation of acetyl group (acetyl CoA) with pyruvic acid to yield citric acid.

4 There are three points in the cycle where ${NAD}^{+}$ is reduced to NADH + $H^{+}$ .

Ans.
(3)

Krebs’ cycle starts with condensation of acetyl group (acetyl CoA) with oxaloacetate to form a tricarboxylic, 6-carbon compound called citric acid.

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Solution

Q. Which statement is wrong for Krebs’ cycle [2017]

1 There is one point in the cycle where FAD+ is reduced to FADH2.

2 During conversion of succinyl CoA to succinic acid, a molecule of GTP is synthesised.

3 The cycle starts with condensation of acetyl group (acetyl CoA) with pyruvic acid to yield citric acid.

4 There are three points in the cycle where NAD+ is reduced to NADH + H+.

Ans. (3) Krebs’ cycle starts with condensation of acetyl group (acetyl CoA) with oxaloacetate to form a tricarboxylic, 6-carbon compound called citric acid.

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Q.
Which statement is wrong for Krebs’ cycle [2017]

1 There is one point in the cycle where ${FAD}^{+}$ is reduced to ${FADH}_{2}$ .

4 There are three points in the cycle where ${NAD}^{+}$ is reduced to NADH + $H^{+}$ .

Ans.
(3)

Krebs’ cycle starts with condensation of acetyl group (acetyl CoA) with oxaloacetate to form a tricarboxylic, 6-carbon compound called citric acid.