Question

what distinguishes simple carbohydrates from other types of carbohydrates?
a) they are made up of three or more sugar molecules.
b) they are made of only one sugar molecule.
c) they contain only carbon and hydrogen.
d) none of the above

Explanation:

Simple carbohydrates, like monosaccharides (e.g., glucose), consist of a single sugar molecule. Option A describes complex carbohydrates (polysaccharides). Option C is incorrect as carbohydrates contain carbon, hydrogen, and oxygen. So, the key characteristic of simple carbohydrates is being made of one sugar molecule (Option B).

Answer:

B) They are made of only one sugar molecule.