All of the following statements apply to microtubules EXCEPT

Options

A. They are able to move vesicles and other storage inclusions
B. They serve a cytoskeletal area
C. They are linear polymers of tubulin
D. They make up the thin myofilament (actin) in skeletal muscle

Answer

To solve the question regarding microtubules and identify the incorrect statement, we will analyze each of the provided statements one by one.

1. **Statement 1: They are able to move vesicles and other storage inclusions.**
- Microtubules are indeed involved in the movement of vesicles within the cell. They serve as tracks along which motor proteins transport cellular materials. Therefore, this statement is **true**.

2. **Statement 2: These are a cytoskeletal area.**
- Microtubules are a key component of the cytoskeleton, which provides structural support and shape to the cell. They play a role in maintaining the cell's integrity and facilitating cellular movements. Thus, this statement is also **true**.

3. **Statement 3: They are linear polymers of tubulin.**
- Microtubules are composed of tubulin protein subunits that polymerize to form long, hollow tubes. This characteristic is fundamental to their structure. Therefore, this statement is **true**.

4. **Statement 4: They make up the thin myofilament actinous skeletal wall.**
- This statement is incorrect because thin myofilaments are primarily made of actin, which is a component of microfilaments, not microtubules. Microtubules do not form the thin myofilaments in skeletal muscle. Hence, this statement is **false**.

Based on the analysis, the statement that does not apply to microtubules is the fourth one: "They make up the thin myofilament actinous skeletal wall."

### Final Answer:
The statement that does not apply to microtubules is: **"They make up the thin myofilament actinous skeletal wall."**