The protein which occurs in the matrix of bone is

Options

A. Ossein
B. Chondrin
C. Keratin
D. Globulin

Answer

**Step-by-Step Solution:**

1. **Understanding Bone Structure**:
- Bone is classified as a specialized connective tissue. It has a unique structure that includes a matrix.

2. **Identifying the Matrix Components**:
- The matrix of bone consists of two main components: an inorganic part and an organic part.

3. **Inorganic Part**:
- The inorganic part of the bone matrix primarily contains mineral salts, which provide strength and rigidity to the bone.

4. **Organic Part**:
- The organic part of the bone matrix is composed mainly of proteins.

5. **Identifying the Protein**:
- The specific protein that is found in the organic part of the bone matrix is called "osin." This protein constitutes about 32-35% of the organic matrix.

6. **Eliminating Incorrect Options**:
- Chondrin is found in cartilage, not bone.
- Keratin is a protein found in hair, nails, and skin, not in bone.
- Globulin refers to a group of proteins found in blood plasma, which is also not relevant to bone structure.

7. **Conclusion**:
- Therefore, the correct answer to the question is that the protein which occurs in the matrix of bone is "osin."

**Final Answer**: The protein which occurs in the matrix of bone is osin.

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