Protein which plays a significant role in ageing is

Options

A. Actin
B. Myosin
C. Collagen
D. Elastin

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a specific protein that plays a significant role in the process of aging.

2. **Analyzing the Options**:
- **Option A: Actin** - This protein is primarily involved in muscle contraction and cellular processes, but it is not directly linked to aging.
- **Option B: Myosin** - Similar to actin, myosin is also involved in muscle contraction and various movements in cells, but it does not significantly contribute to aging.
- **Option C: Collagen** - This protein is a major component of connective tissues and is essential for maintaining skin elasticity and structure. As we age, collagen production decreases, leading to signs of aging such as wrinkles and sagging skin. Therefore, it plays a significant role in aging.
- **Option D: Elastin** - While elastin is important for the elasticity of tissues, it is not as directly associated with the aging process as collagen.

3. **Conclusion**: Based on the analysis of the roles of each protein, collagen is identified as the protein that plays a significant role in aging.

4. **Final Answer**: The protein which plays a significant role in aging is **collagen**.

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