What is peptide bond ?

Explanation

### Step-by-Step Solution:

1. **Definition of Peptide Bond**: A peptide bond is a type of covalent bond that links two amino acids together. It is essential in the formation of proteins.

2. **Formation of Peptide Bond**: The peptide bond is formed during protein synthesis when the carboxyl group (-COOH) of one amino acid reacts with the amino group (-NH2) of another amino acid.

3. **Dehydration Reaction**: The formation of a peptide bond involves a dehydration reaction (also known as a condensation reaction). In this process, a molecule of water (H2O) is removed.

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