What is the meaning of amino acid?

Answer 1

An amino acid is a monomer that builds proteins. There are currently 21 different amino acids, each with a different name and purpose. During protein synthesis within a cell, amino acids align themselves into long chains, known as polymers. They form peptide bonds between one another and, ultimately, for proteins like hemoglobin.

Answer 2

An Amino acid is an organic molecule with an amino functional group at one end of the molecule and a carboxylic acid function group at the other end.

Here is the structure of one such molecule.

H2N - CH2 - C(=O)-OH

Two of these molecules react together. The acid functional group react with the basic (amino) functional group to form a peptide link and extend the molecular chain . e.g.

H2N - CH2 - **C(=O)- N(-H)-**CH2 - COOH

The bit hi-lighted is the peptide link.

Answer 3

Amino acids are the building blocks of proteins and are essential for various biological functions such as enzyme activity, cell structure, and signaling molecules. There are 20 different amino acids that can combine in different sequences to form a wide variety of proteins in living organisms.