A component of cytoskeleton is

Options

A. Microtubule
B. Bone
C. Chitin
D. Cartilage

Answer

To answer the question "A component of cytoskeleton is," we will analyze the options provided and identify which one is a component of the cytoskeleton.

### Step-by-Step Solution:

1. **Understanding the Cytoskeleton**:
- The cytoskeleton is a network of fibers that provides structural support to the cell, helps in maintaining its shape, and plays a role in intracellular transport, cell division, and signaling.

2. **Identifying the Options**:
- The options given are:
- A) Microtubule
- B) Bone
- C) Chitin
- D) Cartilage

3. **Analyzing Each Option**:
- **A) Microtubule**:
- Microtubules are part of the cytoskeleton. They are the largest cytoskeletal fibers and are hollow tubes made of tubulin protein. They play crucial roles in maintaining cell shape, enabling cell motility, and facilitating transport within the cell.
- **B) Bone**:
- Bone is a hard tissue that forms the skeleton in vertebrates. It is not a component of the cytoskeleton.
- **C) Chitin**:
- Chitin is a structural polysaccharide found in the cell walls of fungi and the exoskeletons of arthropods. It is not part of the cytoskeleton in eukaryotic cells.
- **D) Cartilage**:
- Cartilage is a flexible connective tissue found in various parts of the body, such as joints. It is not a component of the cytoskeleton.

4. **Conclusion**:
- Based on the analysis, the only option that is a component of the cytoskeleton is **A) Microtubule**.

### Final Answer:
The correct answer is **A) Microtubule**.