Question

The characteristic functional groups of a protein are _____.

Answer 1

`\boxed{\text{amide groups}}`

Step-by-step explanation:

A protein is a long chain of amino acids linked together by amide groups.

The general structure is

`\rm \left[-NHCHR-\underbrace{\hbox{CO-NH}}_{\hbox{amide group}}-CHRCO-\right]_(n)`