In the origin of life, microsphere are most primitive protobiont, which have a membrane of :

Options

A. fats
B. lipids
C. carbohydrates
D. lipids and proteins

Answer

**Step-by-Step Solution:**

1. **Understanding Microspheres**: Microspheres are considered the most primitive protobionts, which are early cell-like structures that are essential in the study of the origin of life. They are formed from organic compounds.

2. **Identifying Membrane Composition**: The question asks about the type of membrane that surrounds these microspheres. To answer this, we need to understand what constitutes a biological membrane.

3. **Evaluating Options**:
- **Option A: Fats** - Fats alone cannot form a membrane because they do not create the necessary bilayer structure required for a cell membrane.
- **Option B: Lipids** - While lipids are a component of membranes, simple lipids alone do not suffice for membrane formation as they lack the structural complexity needed for transport and function.
- **Option C: Carbohydrates** - Carbohydrates are not a primary component of cell membranes and are not involved in the formation of the membrane structure.
- **Option D: Lipids and Proteins** - This option combines both lipids and proteins, which are indeed essential components of biological membranes. Lipids form the bilayer, while proteins are embedded within the membrane, providing functionality such as transport.

4. **Conclusion**: The correct answer is that microspheres have a membrane composed of lipids and proteins, which is essential for their function and structure.

**Final Answer**: The membrane of microspheres, the most primitive protobionts, is made of lipids and proteins.

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