The purpose of myoglobin is to
A)store oxygen.
B)sequester calcium.
C)convert lactic acid to glucose.
D)make the muscle red.

Question

Quizplus · Accepted Answer

Myoglobin is a protein found in muscle cells that has a high affinity for oxygen. Its main function is to store oxygen and supply it to the muscles during exercise when there may be a shortage of oxygen. Therefore, the best choice is A, which states that the purpose of myoglobin is to store oxygen. Choice B is incorrect because calcium is not stored in myoglobin. Choice C involves a metabolic process that does not involve myoglobin. Choice D is partially correct in that myoglobin contributes to the red color of muscle tissue, but its primary function is to store oxygen.

The Purpose of Myoglobin Is to