Which of the following compound is considered as a heteropolysaccharide?

Options

A. Glycogen
B. Chitin
C. Starch
D. Hyaluronic acid

Answer

To determine which of the following compounds is considered a heteropolysaccharide, we need to analyze each option provided: Glycosine, Chitin, Starch, and Hyaluronic Acid.

### Step-by-Step Solution:

1. **Understand Polysaccharides**:
- Polysaccharides are long chains of sugar molecules (monosaccharides) linked together. They can be classified into two types: homopolysaccharides and heteropolysaccharides.

2. **Define Homopolysaccharides**:
- Homopolysaccharides are made up of the same type of monosaccharide repeating units. Examples include starch (made of glucose) and glycogen (also made of glucose).

3. **Define Heteropolysaccharides**:
- Heteropolysaccharides consist of different types of monosaccharides in their structure. They contain varying repeating units.

4. **Analyze Each Option**:
- **Glycosine**: This is not a commonly recognized polysaccharide and does not fit the definition of a heteropolysaccharide.
- **Chitin**: This is a homopolysaccharide made of repeating units of N-acetylglucosamine.
- **Starch**: This is also a homopolysaccharide, composed entirely of glucose units.
- **Hyaluronic Acid**: This is a well-known heteropolysaccharide composed of alternating units of N-acetylglucosamine and glucuronic acid.

5. **Conclusion**:
- Among the options provided, only Hyaluronic Acid is classified as a heteropolysaccharide.

### Final Answer:
The compound that is considered a heteropolysaccharide is **Hyaluronic Acid**.