Question

The enzymes that catalyze cellular reactions are macromolecules called proteins.

Which of the following elements most often compose proteins?
O
carbon, hydrogen, oxygen, nitrogen, and phosphorus
carbon and hydrogen
carbon, hydrogen, oxygen, and nitrogen
carbon, hydrogen, and oxygen

Answer 1

Proteins are most often composed of carbon, hydrogen, oxygen, and nitrogen.

Step-by-step explanation:

The elements that most often compose proteins are carbon, hydrogen, oxygen, and nitrogen. These four elements combine to form amino acids, the building blocks of proteins. Amino acids consist of a central carbon atom bonded to a hydrogen atom, an amino group (containing nitrogen), a carboxyl group (containing carbon and oxygen), and a variable side chain. The side chain, which differs for each amino acid, gives proteins their unique structure and function.

Learn more about Composition of proteins