Which of the following is a globular protein ?

Options

A. Collagen
B. Myoglobin and Haemoglobin
C. Myosin
D. Enzymes

Answer

To determine which of the following is a globular protein, we need to analyze each option provided:

1. **Collagen**:
- Collagen is a structural protein that forms fibers and is primarily found in connective tissues. It is characterized by its triple helix structure and is not classified as a globular protein.

2. **Myoglobin**:
- Myoglobin is a globular protein that is found in muscle tissues. It serves as an oxygen-binding protein, similar to hemoglobin, and is soluble in water, which is a characteristic of globular proteins.

3. **Hemoglobin**:
- Hemoglobin is another globular protein that is found in red blood cells. It is responsible for transporting oxygen from the lungs to the rest of the body and is also soluble in water.

4. **Myosin**:
- Myosin is a fibrous protein that plays a key role in muscle contraction. It is not classified as a globular protein but rather as a fibrous protein due to its elongated structure.

5. **Enzymes**:
- Enzymes are typically globular proteins that act as biological catalysts. However, the term "enzymes" is too broad to specify a single protein.

Based on the analysis:
- The globular proteins from the options provided are **myoglobin** and **hemoglobin**.

### Final Answer:
**Myoglobin and Hemoglobin are globular proteins.**