Chapter 3: Bioenergetics

Question 1

Describe the relationship between metabolism and the energy used for muscle contraction.

Answer 1

Energy is the ability to do work, and metabolism is the sum of all chemical reactions in the body that either use or create energy. Our bodies are constantly converting chemical energy from food into mechanical energy to contract our muscles.

Question 2

Describe EPOC and its role in exercise recovery

Answer 2

Excess postexercise oxygen consumption helps the body repay the oxygen debt created during the exercise session. After the workout is complete and the need for a higher supply of energy diminishes or ends, the body continues to take in extra oxygen to repay oxygen debt and begin cellular repair created by exercise. EPOC helps the body recover from both aerobic and anaerobic activities.

Question 3

The ATP–CP system produces ________ ATP per molecule of creatine phosphate.

Answer 3

One

Question 4

What type of relief makes up the rest interval for developing the glycolytic system?

Answer 4

work relief

Question 5

EPOC is used for all the following processes except

Answer 5

digestion of carbohydrates to glucose

Question 6

The aerobic (oxidative) energy system is fueled by _______ and produces up to ____ ATP per unit of fuel.

Answer 6

glucose and fat; 100 or more

Question 7

What terminology best describes the point at which the aerobic system cannot supply enough ATP for the needs of the body, forcing the anaerobic systems to increase their contribution of ATP?

Answer 7

lactate threshold