Ruth's personal trainer tells her not to walk so fast on the treadmill that she is uncomfortable. Discomfort is her body's signal that she is not getting enough oxygen to burn fat. Instead, it begins to burn the simple sugars that are immediately available in her blood, called
A) glucose.
B) cholecystokinin (CCK).
C) leptin.
D) insulin.

Question

Quizplus · Accepted Answer

The simple sugars immediately available in the blood are called glucose, so option A is the correct choice. Cholecystokinin (CCK), leptin, and insulin are hormones that are involved in regulating appetite and metabolism, but they are not directly related to the body's use of oxygen to burn fat.

Ruth's Personal Trainer Tells Her Not to Walk So Fast