Question

Identify the oxidative decarboxylation
steps in Kreb’s cycle:
A) Formation of alpha- ketoglutaric acid
B) Formation of succinyl Co. A
C) Formation of Acetyl Co.A
1) A only 2) B only
3) B & C only 4) A, B, C

Answer 1

Answer:

The answer is option (3).

Explanation:

The first oxidative decarboxylation in respiration is the conversion of pyruvic acid into acetyl coenzyme A. Moreover it is the first decarboxylation in respiration.

Formation of

$\alpha \: ketoglutaric \: acid$

is the first decarboxylation in Kreb's cycle. But remember it is not oxidative.

Succinyl Co-A formation is also an oxidative decarboxylation.

# remember that all the oxidative decarboxylations will lead to the production of an NADH2......

Answer 2

Answer:

3) B & C only is the correct option.