Question

If you were to jog 1 km a few hours after lunch, which stored fuel would you probably tap?

(A) muscle proteins

(B) muscle and liver glycogen

(C) fat in the liver

(D) fat in adipose tissue

Short answer

(A) The statement “muscle proteins” is false.

(B) The statement “muscle and liver glycogen” is true.

(C) The statement “fat in the liver” is false.

(D) The statement “fat in adipose tissue” is false.

Step-by-step solution

Jogging

The form of aerobic exercise (physical activity) in which a person runs slow by not putting stress on the body to be physically fit is called jogging.

The several benefits associated with jogging are strengthening muscles, maintaining a healthy weight, boosting metabolism, reducing body fat, improving lung function, and improving blood pressure.

Explanation of option (A)

The specialized protein found in muscle cells to form tissue structure and help build muscles is called muscle protein. The contractile (actin and myosin), attachment (titin, nebulin, and dystrophin), and regulatory (tropomyosin and troponin) proteins are considered as different kinds of muscle protein.

Thus, muscle protein is not the primary fuel source during exercise.

Therefore, the given statement is false.

Explanation of option (B)

The complex carbohydrate stored in the liver and muscles essential for storing glucose for later use is called glycogen.

Thus, glycogen stored in the liver acts as a glucose reserve for ATP generation during exercise to gain strength and muscle.

Therefore, the given statement is true.

Explanation of option (C)

The term fat represents the macronutrients that provide stored energy molecules when broken down in the liver. Various functions of fat in the living body are body fuel, cholesterol regulation, maintaining membrane, and protecting internal organs.

Thus, fat is not a reliable source of glucose reserve.

Therefore, the given statement is false.

Explanation of option (D)

The specialized connective tissue simply distributed under the skin and used as energy storage is called adipose tissue. The different functions of adipose tissue are energy storage, mechanical protection, and hormone production.

Thus, an immediate energy source is obtained from glucose stored as glycogen instead of fat in adipose tissue.

Therefore, the given statement is false.