Which one is the most abundant protein in animal world?

Options

A. Collagen
B. RUBISCO
C. Trysin
D. Insulin

Answer

**Step-by-Step Solution:**

1. **Identify the Options**: The question provides four options: collagen, rubisco, tricin, and insulin.

2. **Understanding Collagen**: Collagen is a structural protein that is found in various connective tissues in animals. It is known for providing strength and support to tissues such as skin, bones, tendons, and ligaments.

3. **Analyzing Other Options**:
- **Rubisco**: While rubisco is the most abundant protein on Earth due to its role in photosynthesis in plants, it is not primarily found in animals.
- **Tricin**: This is a lesser-known protein and not significant in terms of abundance in the animal kingdom.
- **Insulin**: Insulin is a hormone that regulates glucose levels in the blood, but it is not the most abundant protein.

4. **Conclusion**: Given that collagen constitutes about 30% of the total protein in the human body and is a major component of connective tissues in animals, it is identified as the most abundant protein in the animal world.

5. **Final Answer**: The most abundant protein in the animal world is collagen.

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