During strenuous exercise,the production of ____ when there is no ____ present in the muscle fibers contributes to muscle fatigue.
A)lactic acid/oxygen
B)oxygen/lactic acid
C)carbon dioxide/glucose
D)lactic acid/carbon dioxide

Question

Quizplus · Accepted Answer

During strenuous exercise, the demand for energy in the muscle fibers increases, leading to anaerobic respiration, which produces ATP but also produces lactic acid as a byproduct. Lactic acid buildup in the muscles contributes to muscle fatigue. The production of carbon dioxide and the presence of glucose are also involved in cellular respiration but do not directly contribute to muscle fatigue in the same way as lactic acid buildup. Oxygen is necessary for aerobic respiration, which is not the primary energy source during strenuous exercise, but can help alleviate muscle fatigue if present.

During Strenuous Exercise,the Production of ____ When There Is No