Q.

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

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a

a and b only

b

b and c only

c

a and c only

d

a, b and c

answer is A.

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Detailed 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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