Glucose is the most commonly used energy source by human cells because
A) this is the largest macromolecule available to cells for energy production.
B) this monosaccharide yields the most energy of all macromolecules.
C) fats and proteins yield too much energy for the cells to process.
D) glucose is generally the most readily available substrate, derived from food or glycogen.
E) no other macromolecule can be broken down enzymatically by cells to release energy.

Question

Quizplus · Accepted Answer

Glucose is the most readily available energy source because it can be quickly derived from dietary carbohydrates or stored glycogen, making it the primary substrate for cellular respiration.

Glucose Is the Most Commonly Used Energy Source by Human