Question

multiple choice 1 point which two functional groups are always found in amino acids? hydroxyl and carboxyl groups carboxyl and amino groups carbonyl and amino groups amino and sulfhydryl groups

Explanation:

Amino acids have a core structure containing both a carboxyl group ($-\text{COOH}$) and an amino group ($-\text{NH}_2$), which define their identity. Other functional groups listed are only present in specific, non-universal amino acids.

Answer:

Carboxyl and amino groups