Figure 9- 1 Skeletal Muscle Fiber

Multiple Choice

Figure 9- 1 Skeletal Muscle Fiber
Use Figure 9- 1 to answer the following questions:
-During activities requiring aerobic endurance

A) oxygen debts are common.
B) glycogen and glycolysis are the primary sources of reserve energy.
C) fatigue occurs in a few minutes.
D) most of the muscle's energy is produced in mitochondria.
E) oxygen is not required.