Formation of peptide and glycosidic bonds involves

Options

A. Esterification
B. Hydration
C. Dehydration
D. Acidification.

Answer

To answer the question regarding the formation of peptide and glycosidic bonds, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Peptide Bonds**:
- Peptide bonds are formed between two amino acids. This occurs when the carboxyl group (-COOH) of one amino acid reacts with the amino group (-NH2) of another amino acid.
- During this reaction, a molecule of water (H2O) is released, which is a characteristic of a dehydration reaction.

2. **Understanding Glycosidic Bonds**:
- Glycosidic bonds are formed between two monosaccharides (simple sugars). This bond forms when the hydroxyl group (-OH) of one monosaccharide reacts with the hydroxyl group of another monosaccharide.
- Similar to peptide bond formation, this reaction also results in the release of a water molecule, indicating a dehydration reaction.

3. **Identifying the Type of Reaction**:
- Both peptide and glycosidic bond formations involve the loss of water, which is the hallmark of dehydration (or condensation) reactions.
- Therefore, the correct type of reaction involved in the formation of both peptide and glycosidic bonds is dehydration.

4. **Evaluating the Options**:
- **Esterification**: This involves the formation of esters from acids and alcohols, which is not relevant here.
- **Hydration**: This refers to the addition of water, which does not apply since we are losing water.
- **Dehydration**: This is the correct answer, as it describes the process where water is removed during bond formation.
- **Acidification**: This involves the formation of acids and is not relevant to the formation of peptide or glycosidic bonds.

### Conclusion:
The formation of peptide and glycosidic bonds involves **dehydration reactions**.