How do muscles obtain their energy after about 10 minutes of moderate exercise, and what benefit does it have over other methods?
A) Muscles obtain their energy by metabolizing fatty acids; this is beneficial because fatty acids are plentiful.
B) Muscles obtain their energy through anaerobic respiration of glucose; this is beneficial because anaerobic respiration can generate energy quickly.
C) Muscles obtain their energy through aerobic respiration of glucose; this is useful because it produces more ATP than anaerobic respiration.
D) Muscles obtain their energy by breaking down ATP; this is useful because creatine phosphate is plentiful.

Question

Quizplus · Accepted Answer

After about 10 minutes of moderate exercise, muscles begin to rely on aerobic respiration of glucose to produce ATP. This is beneficial because it produces more ATP than anaerobic respiration, allowing muscles to continue functioning for longer periods of time without fatigue. Additionally, aerobic respiration does not produce lactic acid, which can cause muscle soreness and fatigue.

How Do Muscles Obtain Their Energy After About 10 Minutes