Fat Burning Metabolism and Energy Systems 2

Question 1

What respiratory quotient (RQ) value indicates the body is primarily burning fat for fuel?

Accepted Answer

0.70

Answer

1.0

Answer

0.85

Answer

0.55

Question 2

Approximately how many calories must be burned or restricted to lose one pound of body fat?

Accepted Answer

3,500 calories

Answer

1,750 calories

Answer

2,500 calories

Answer

5,000 calories

Question 3

Which energy system dominates during prolonged low-to-moderate intensity exercise lasting over 30 minutes?

Accepted Answer

Aerobic oxidative system

Answer

ATP-PC (phosphocreatine) system

Answer

Anaerobic glycolysis

Answer

Lactic acid system

Question 4

What happens to fat utilization as exercise intensity increases toward maximum effort?

Accepted Answer

Fat utilization decreases as carbohydrates take over

Answer

Fat utilization increases sharply

Answer

Fat utilization remains constant

Answer

Fat becomes the only fuel source

Question 5

What is 'metabolic flexibility'?

Accepted Answer

The capacity to switch efficiently between burning fat and carbohydrates based on availability

Answer

The ability to exercise at varying intensities

Answer

The rate at which muscles grow after training

Answer

The ability of metabolic enzymes to function at different temperatures

Question 6

Which of the following best promotes fat oxidation during exercise?

Accepted Answer

Exercising in a fasted state

Answer

Consuming a large carbohydrate meal 30 minutes before exercise

Answer

Taking insulin prior to exercise

Answer

Reducing total exercise duration

Question 7

Which tissue contributes most to resting energy expenditure due to its high metabolic activity?

Accepted Answer

Skeletal muscle

Answer

Adipose tissue

Answer

Bone tissue

Answer

Connective tissue