During exercise one of the main effects of the body is that cellular respiration increases (option A)
What is a cell?
The cell is the basic unit that makes up all living things. In fact, the cell is the smallest element that can be considered alive.
During exercise, cells play a fundamental role because once an individual begins to exercise, the demand for energy increases, so the cell's mitochondria must work faster to oxidize food and obtain energy in the form of ATP.
According to the above, this alteration of functioning makes the cells breathe faster to obtain the necessary energy that the organism demands in periods of physical activity.
Learn more about cells in: https://brainly.com/question/5763151
