What Is Life? 2nd Edition by Jay Phelan

Exercise 35

In harvesting the chemical energy of the molecules in food:
A) all macromolecules must first be converted to glucose.
B) all macromolecules must first be converted to their hydrocarbon chains.
C) all macromolecules must first be converted to glucose or another simple sugar.
D) organisms can use sugars, lipids, and proteins.
E) all macromolecules must first be converted to proteins or free-form amino acids. Short-Answer Questions