Question

Identify one specific molecule that will increase in concentration in the blood as a direct result of increased activity of the circulatory system during physical exersize

Answer 1

It is an enzymes. Let me know if you want me to explain this.

Answer 2

The correct answer is oxygen.

Step-by-step explanation:

During physical exercise, the circulatory pattern changes to increase the blood supply to the muscles, skin and few organs.

This increased blood supply is the result of increased consumption of "oxygen" in cellular respiration by the skeletal muscles. Cellular respiration produces ATP which provides energy to the cell to do work and remove carbon dioxide, other metabolites and heat.

Thus, oxygen is the correct answer.