Question

which of the following best describes a carbohydrate? a. carbohydrates always consist of a five - carbon sugar, a nitrogen and one or more phosphate groups and are used to store genetic information. b. carbohydrates are organic macromolecules that are made up of hydrogen, and oxygen atoms and are used for energy storage and structural molecules. c. carbohydrates are organic macromolecules that are insoluble and have the ability to store energy for extended periods of time. d. carbohydrates are composed of amino acid monomers and are involved in cell signaling, cell transport, immune responses, and the cell cycle.

Explanation:

Carbohydrates are organic macromolecules composed of carbon, hydrogen, and oxygen atoms. They are used for energy - storage and as structural molecules. Option A describes nucleotides, option C describes lipids, and option D describes proteins.

Answer:

B. Carbohydrates are organic macromolecules that are made up of carbon, hydrogen, and oxygen atoms and are used for energy storage and as structural molecules.