CTET 2 Math and Science Nov 2012 Paper

Question : 89 of 120

Marks: +1, -0

After physical exercise we sometimes get muscle cramps. This results due to

non-conversion of glucose to pyruvate
non-conversion of glucose to lactic acid
conversion of pyruvate to lactic acid
conversion of pyruvate to alcohol

Solution:

It results to lactic acid fermentation. It occurs in lactic acid bacteria and in musceles during exercise. Pyruvic acid produced in glycolysis is reduced by

NADH_2

to form lactic acid without producing carbon dioxide. Thatis why after physical exercise we sometimes get muscle cramps.

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