Glucose Is the Most Commonly Used Energy Source by Human

Multiple Choice

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.