Slow Muscle Fibers Contain Large Amounts of the Oxygen-Binding Protein

Question

Slow muscle fibers contain large amounts of the oxygen-binding protein ________.
A) myoglobin
B) calmodulin
C) titin
D) nebulin
E) troponin

Accepted Answer

Slow muscle fibers rely on oxidative metabolism to produce ATP, thus they contain large amounts of myoglobin, which binds and stores oxygen for use during metabolism.