Heavy and light meromyosin are Components of

Options

A. Actin filament
B. Myosin filament
C. Troponin protein
D. Tropomyosin protein

Answer

**Step-by-Step Solution:**

1. **Understanding the Components**: Heavy and light meromyosin are components of myosin, which is a crucial protein involved in muscle contraction.

2. **Definition of Meromyosin**: Meromyosin is a fragment of myosin that can be further divided into heavy meromyosin (HMM) and light meromyosin (LMM).

3. **Structure of Myosin**: Myosin is a motor protein that consists of two main parts:
- **Heavy Meromyosin (HMM)**: This part contains the globular head, which is responsible for binding to actin and hydrolyzing ATP to generate movement.
- **Light Meromyosin (LMM)**: This part forms the tail of the myosin molecule and does not have the heavy structure that the head has.

4. **Function in Muscle Contraction**: Myosin filaments interact with actin filaments to facilitate muscle contraction. The interaction between heavy meromyosin and actin is essential for muscle movement.

5. **Conclusion**: Therefore, the correct answer to the question is that heavy and light meromyosin are components of myosin filaments.

**Final Answer**: Heavy and light meromyosin are components of myosin filaments.

---