First slide

Aerobic Respiration

Question

In which of the following steps production of NADH occurs during respiration?
(a) Isocitric acid → α-ketoglutaric acid
(b) α-ketoglutaric acid → Succinyl Co.A
(c) Succinyl Co.A → Succinic acid

Easy

A

a and b only
B

b and c only
C

a and c only
D

a, b and c

Solution

When succinyl CoA→ succinic acid then substrate level phosphorylation occurs but NADH is not produced. NADH + H⁺ are formed during the conversion of isocitric acid to $α$ -ketoglutaric acid and its subsequent conversion to succinyl.co.A.

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