Question

A sportsman, after a long break from his routine exercise, suffered muscular cramps during a heavy exercise session. This happened due to ______.

विकल्प

• lack of carbon dioxide and the formation of pyruvate.

• presence of oxygen and the formation of ethanol.

• lack of oxygen and the formation of lactic acid.

• lack of oxygen and the formation of carbon dioxide.

Answer 1

A sportsman, after a long break from his routine exercise, suffered muscular cramps during a heavy exercise session. This happened due to a lack of oxygen and the formation of lactic acid.

Explanation:

While there is a strong demand for energy during vigorous exercise, there is a finite amount of oxygen available. Therefore, to meet the need for energy, anaerobic respiration occurs in the muscle cells. Lactic acid is created in muscles as a result of the anaerobic metabolism of glucose. Muscle cramps are caused by the buildup of lactic acid in the muscles.