First slide

Fermentation

Question

The net gain of ATP in anaerobic breakdown of a molecule of Glucose is

Easy

A

2
B

4
C

6
D

8

Solution

When a molecule is broken down anaerobically whatever NADH formed in Glycolysis are used for the formation of either lactic acid or alcohol in fermentation. The total ATP formed in Glycolysis is 4 ATP. Of these 2 ATP are used in the 1st and 3rd reactions of glycolysis. Hence the net gain of ATP is 4 – 2 = 2 ATP.

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