A polysaccharide of cartilage is

Options

A. Chondroitin sulphate
B. Chondritin
C. Ossein
D. Cartilagin

Answer

To solve the question regarding the polysaccharide of cartilage, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Structure of Cartilage**:
- Cartilage is a type of connective tissue that provides support and flexibility in various parts of the body.

2. **Understand the Components of Cartilage**:
- Cartilage is composed of cells (chondrocytes) and an extracellular matrix, which includes collagen fibers and proteoglycans.

3. **Define Proteoglycans**:
- Proteoglycans are large molecules made up of a core protein and glycosaminoglycans (GAGs), which are long chains of disaccharides.

4. **Identify the Key Polysaccharide**:
- One of the main glycosaminoglycans found in cartilage is chondroitin sulfate.

5. **Explain the Composition of Chondroitin Sulfate**:
- Chondroitin sulfate consists of repeating disaccharide units, specifically N-acetylgalactosamine and glucuronic acid.

6. **Discuss the Function of Chondroitin Sulfate in Cartilage**:
- Chondroitin sulfate is crucial for the structural integrity of cartilage and provides resistance to compression, which is essential for its function in joints.

7. **Conclude with the Correct Answer**:
- Based on the information, the polysaccharide of cartilage is **chondroitin sulfate**.

### Final Answer:
The polysaccharide of cartilage is **chondroitin sulfate**.

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