Muscle Fibers

Question

Muscle fibers
A) have a relatively high metabolic rate
B) depend upon large amounts of O2
C) contain large numbers of mitochondria
D) preferentially use aerobic respiration
E) all of these are true of muscle fibers

Accepted Answer

Muscle fibers have a relatively high metabolic rate, depend upon large amounts of energy (in the form of ATP), contain large numbers of mitochondria, and preferentially use aerobic respiration. Therefore, all of these statements are true of muscle fibers.