The description that accurately compares the functions of carbohydrates and that of proteins that can be used to complete the table is that both macromolecules can be used for energy in the cell. The correct option would, therefore, be A.
The cell normally uses carbohydrates to generate energy during cellular respiration.
The cell also use protein to for cellular respiration in two cases:
- presence of excess amino acids through excessive protein consumption.
- when there are no other source of energy available to use.
The protein is first broken down to its component amino acids, the amino acids are deaminated and converted into ammonia with certain intermediates entering the cellular respiration pathway.
More on cell's energy generation can be found here: https://brainly.com/question/20661128
