Fat Burning Ultimate 2

Question 1

Which hormone is most directly responsible for signaling fat cells to release stored fatty acids during exercise?

Accepted Answer

Epinephrine

Answer

Epinephrine (adrenaline) binds to receptors on fat cells and activates lipolysis, releasing stored fatty acids into the bloodstream.

Question 2

What is the primary fuel source used by the body during low-intensity, steady-state exercise (below 60% VO2 max)?

Accepted Answer

Fat (fatty acids)

Answer

At low intensities the oxidative system predominates and fat provides the majority of energy because oxygen supply is sufficient to fully oxidize fatty acids.

Question 3

Which dietary approach has been shown to increase fat oxidation at rest by depleting liver and muscle glycogen?

Accepted Answer

Ketogenic diet

Answer

A ketogenic diet severely restricts carbohydrates, forcing the body to upregulate fat oxidation enzymes and rely on fatty acids and ketones for fuel.

Question 4

A person burns 500 kcal during a 45-minute jog. Roughly how many grams of pure fat does this represent?

Accepted Answer

56 g

Answer

Fat provides approximately 9 kcal per gram, so 500 kcal ÷ 9 kcal/g ≈ 56 g of pure fat.

Question 5

Which enzyme inside fat cells (adipocytes) is the rate-limiting step of lipolysis?

Accepted Answer

Hormone-sensitive lipase (HSL)

Answer

Hormone-sensitive lipase is activated by catecholamines and inhibited by insulin; it hydrolyzes stored triglycerides into glycerol and free fatty acids.

Fat Burning Practice Test

Fat Burning Practice Test

Fat Burning Ultimate 2