During exercise there is an increase in physical activity and muscle cells respire more than they do when the body is at rest. The heart rate increases during exercise. The rate and depth of breathing increases - this makes sure that more oxygen is absorbed into the blood, and more carbon dioxide is removed from it.
The answer for this question is C, I just did my final for Biology and got a good score in it.
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Protein synthesis can be increased by <span>a) turning on gene expression.</span>
Everything we have today is because of the industrial revolution
