An "internal reservoir" of oxygen in rested muscle is found in oxygen molecules bound to
A)hemoglobin.
B)bicarbonate ion.
C)carbonic acid.
D)myoglobin.

Question

Quizplus · Accepted Answer

Myoglobin is a protein in muscle cells that can bind to oxygen, allowing for a stored reserve of oxygen within the muscle tissue. Hemoglobin is found in red blood cells and helps transport oxygen in the blood, but it is not an internal reservoir within muscle tissue. Bicarbonate ion and carbonic acid are involved in regulating blood pH, but are not directly involved in storing oxygen in muscle tissue.

An "Internal Reservoir" of Oxygen in Rested Muscle Is Found