In a study of physical endurance, researchers observed significant increases in the heart rates and breathing rates of participants immediately after they engaged in strenuous exercise. Which statement best explains the increase in the heart rate and the breathing rate during exercise?

TRANSPORT INTO AND OUT OF THE CELL

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	the water concentration in the blood increases
B	body cells require increased oxygen as energy is expended
C	muscle cells increase in temperature and require fluid to reduce the temperature
D	an increase in muscle activity causes increases in glucose levels in red blood cells

Explanation:

Detailed explanation-1: -Which statement best explains the increase in the heart rate and the breathing rate during exercise? Body cells require increased oxygen as energy is expended.

Detailed explanation-2: -Answer and Explanation: Cellular respiration is best described as E) changing of stored chemical energy in food molecules to a form usable by organisms.

Detailed explanation-3: -Which statement explains how producers are dependent upon consumers for their survival? The correct answer is: Consumers produce carbon dioxide for producers to use during photosynthesis.

Detailed explanation-4: -During cellular respiration, chemical energy-energy stored in the bonds holding molecules together-is changed into ATP and heat energy inside each of our cells.

There is 1 question to complete.