The glycosidic bonds of polysaccharide are formed by which process?

Answer

To answer the question about how glycosidic bonds of polysaccharides are formed, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding Glycosidic Bonds**:
- Glycosidic bonds are covalent bonds that link sugar molecules together to form polysaccharides. They are essential for the structure of carbohydrates.

2. **Identifying the Process**:
- The formation of glycosidic bonds occurs through a specific biochemical process.

3. **The Role of Hydroxyl Groups**:
- Each sugar molecule has hydroxyl (–OH) groups. During the formation of a glycosidic bond, these hydroxyl groups from two sugar molecules interact.

4. **Dehydration Reaction**:
- The process by which glycosidic bonds are formed is known as a dehydration reaction (or condensation reaction). In this process, a molecule of water (H₂O) is released when the bond is formed.

5. **Final Formation of Glycosidic Bond**:
- After the removal of water, the two sugar molecules are now linked by the glycosidic bond, resulting in the formation of a disaccharide or a longer polysaccharide chain if more sugar units are involved.

### Conclusion:
The glycosidic bonds of polysaccharides are formed through a dehydration reaction, where hydroxyl groups from two sugar molecules combine, releasing a water molecule.

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