Where we can find chitin?

Explanation

**Step-by-Step Solution:**

1. **Understanding Chitin**: Chitin is a type of polysaccharide, which is a macromolecule composed of long chains of sugar molecules. Specifically, chitin is a homopolymer, meaning it is made up of repeating units of the same type of monosaccharide.

2. **Monomer Unit of Chitin**: The monomer unit that makes up chitin is N-acetylglucosamine. This means that chitin consists of long chains of N-acetylglucosamine molecules linked together.

3. **Locations of Chitin**:
- **Fungal Cell Walls**: One of the primary locations where chitin can be found is in the cell walls of fungi. The cell wall provides structural support and protection to the fungal cells.
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