Polypeptide and protein

Explanation

### Step-by-Step Solution:

1. **Definition of Polypeptide**: A polypeptide is a chain of amino acids linked together by peptide bonds. Specifically, it is formed when two or more amino acids join together.

2. **Formation of Polypeptides**: The process of forming a polypeptide involves the linkage of amino acids through peptide bonds. Each peptide bond is a covalent bond that forms between the carboxyl group of one amino acid and the amino group of another.

3. **Definition of Protein**: A protein is a larger biomolecule that consists of one or more polypeptide chains. Proteins are made up of long chains of amino acids, which are folded and coiled into specific three-dimensional structures.

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