Biology : PU-CET (U.G) 2015 Panjab University Entrance Exam With Answers

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60.

Net Gain Of ATP In Glycolysis Is :

A: 6

B: 2

C: 4

D: 8

The answer is: D

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Explanation

Correct option is D)

Glycolysis is the first stage of the breakdown of glucose in the cell.

During glycolysis 2 ATP molecules are used up and four ATP molecules are generated. In the entire process of glycolysis, two NADH₂ molecules are also generated. When these molecules undergo ETS they will form 3 ATP per NADH₂ which means 6 ATP.

Therefore the total ATP that are forming are 10 and as 2

ATP is used up the net gain will be 8.

So, the correct option is '8'