Question

A person will breathe deeply and rapidly for some time after a period of strenuous exercise. The longer and more intense the exercise, the longer and deeper the breathing will be and this will continue after the exercise stops. Using your understanding of cellular respiration, why strenuous exercise stimulates deep breathing?
A. More rapid heartbeat.
B. More consumption of oxygen by cells.
C. More release of carbon dioxide by cells
D. Both A and B.

Answer 1

Hint: The conversation of chemical energy into functional energy by the sets of metabolic reactions occur within the cell by the process, called cellular respiration. Cellular respiration is a catabolic reaction which involves the synthesis of ATP.

Complete answer:
In the given question the person has exercised spontaneously that makes him breathe very deeply and rapidly. The process of rapid breathing is continued with the intense workout of the person. In this case, a deficiency of oxygen is formed. Due to an intense workout body of that person needs more energy. To increase ATP production, cellular respiration increases simultaneously. Cellular respiration uses oxygen to convert glucose into ATP. A high amount of ATP production leads to oxygen deficiency in the body. Exercise increases both the heart rate and breathing of that individual. Increasing heart rate and deep breathing allow the person to enter more oxygen into the body and exhale out the carbon dioxide. That is why a person is breathing deeply and rapidly for some time after a period of strenuous exercise. The longer and more intense the exercise, the longer and deeper the breathing will be and this will continue after the exercise stops.

So option D is correct.

Note:
Two types of cellular respiration are found. These are aerobic respiration and anaerobic respiration. Aerobic respiration is the cellular process in which the body needs oxygen to produce ATP. In this process, energy is produced by converting the sugar. Anaerobic respiration does not need molecular oxygen. Fermentation of lactic acid and alcohol is an example of anaerobic respiration.