Monomeric actin is called

Options

A. F-actin
B. M-actin
C. G-actin
D. N-actin.

Answer

To answer the question "Monomeric actin is called," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Actin**:
- Actin is a protein that plays a crucial role in muscle contraction and other cellular processes. It exists in two forms: monomeric and polymeric.

2. **Identify the Forms of Actin**:
- The monomeric form of actin is referred to as globular actin. This is the single unit that can polymerize to form filaments.
- The polymeric form of actin, which consists of multiple monomers linked together, is known as filamentous actin.

3. **Define the Monomeric Form**:
- The specific term used for monomeric actin is "G-actin," which stands for globular actin.

4. **Conclusion**:
- Therefore, the correct answer to the question "Monomeric actin is called" is G-actin.

### Final Answer:
Monomeric actin is called **G-actin**.

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