Question

which element is needed in addition to carbon,hydrogen and oxygen to make protein​

Answer 1

nitrogen is needed with carbon, hydrogen and oxygen to make protein.

Answer 2

Nitrogen is the correct answer.

• Proteins comprise amino acids. Amino acids are organic compounds.
• The structure of amino acids contains amino groups and a carboxyl group. In addition, they have an R group which can be alkyl or aromatic.
• The amino group is made up of nitrogen and hydrogen while the carboxyl group is made up of carbon, oxygen and hydrogen.
• Hence, the missing element is nitrogen.