HELLLLL
A hamster has a mass of 300 grams before running on an exercise wheel. The hamster runs on the wheel for five minutes and then stops.
Which statement is the most accurate prediction about the mass of the hamster immediately after it stops running?
The mass will be less than 300 grams due in part to cellular respiration.
The mass will remain unchanged because equal amounts of oxygen and carbon dioxide are exchanged during respiration.
The mass will be more than 300 grams because the hamster gained muscle by exercising.
The mass will remain unchanged because any loss of energy is replaced by bigger muscles.