Question
During intense exercise, the cells in a muscle switch from aerobic respiration to lactic acid fermentation. Which is the most likely cause of this switch?
A. high levels of carbon dioxide in the cells
B. high levels of carbon dioxide in the blood
C. low levels of oxygen in the cells
D. low levels of glucose in the cells
A. high levels of carbon dioxide in the cells
B. high levels of carbon dioxide in the blood
C. low levels of oxygen in the cells
D. low levels of glucose in the cells
Answers
GPT-4o mini
The most likely cause of the switch from aerobic respiration to lactic acid fermentation during intense exercise is:
**C. low levels of oxygen in the cells**
During intense exercise, the demand for energy increases rapidly, and if the oxygen supply to the muscle cells is insufficient to meet this demand for aerobic respiration, the cells will switch to lactic acid fermentation to continue producing ATP, albeit less efficiently.
**C. low levels of oxygen in the cells**
During intense exercise, the demand for energy increases rapidly, and if the oxygen supply to the muscle cells is insufficient to meet this demand for aerobic respiration, the cells will switch to lactic acid fermentation to continue producing ATP, albeit less efficiently.