Question

During exercise, the oxygen concentration in the blood increases to twice that of resting levels. t or f

Answer 1

Answer:

False

Explanation:

During exercise, the oxygen DOES NOT concentration in the blood increases to twice that of resting levels.

Answer 2

Answer:

True

Explanation:

Exercise requires a greater level of oxygen in the blood so that it can be delivered to the working muscles.  More oxygen is taken in via deep and more frequent respiration.