During a 12-Hour Fast in a Human, the First Macromolecule

Question

During a 12-hour fast in a human, the first macromolecule to get depleted is typically ________.
A) glucose
B) protein
C) glycogen
D) starch

Accepted Answer

Glycogen is the primary storage form of glucose in the body, found mainly in the liver and muscles. During a short-term fast, such as a 12-hour fast, glycogen stores are the first to be broken down to maintain blood glucose levels.