Protein is a Condensation Polymer:

Proteins are polymers made up of monomers called amino acids. The process by which amino acids are linked together to form proteins is called condensation polymerization.

**Condensation Polymerization:**
- In condensation polymerization, two molecules join together with the loss of a small molecule, usually water.
- In the case of proteins, amino acids join together through peptide bonds, releasing water molecules in the process.
- This repeated condensation reaction between amino acids forms long chains of proteins.

**Amino Acids:**
- Amino acids are the monomers that make up proteins.
- Each amino acid consists of a central carbon atom bonded to an amino group, a carboxyl group, a hydrogen atom, and a side chain (R group).
- The side chain varies in structure among different amino acids, giving each its unique properties.

**Peptide Bonds:**
- Peptide bonds are the covalent bonds that link amino acids in a protein chain.
- The formation of a peptide bond involves the condensation of the amino group of one amino acid with the carboxyl group of another, releasing a water molecule.

**Proteins:**
- Proteins are essential biological molecules that perform a wide range of functions in living organisms.
- The sequence and structure of amino acids in a protein determine its shape and function.
- Examples of proteins include enzymes, antibodies, and structural proteins like collagen.

In conclusion, proteins are condensation polymers formed by the condensation polymerization of amino acids through peptide bonds. This process results in the creation of complex and diverse molecules crucial for life.