Which of the following is not true about coacervates?

Options

A. They are protein aggreagates .
B. They do not have lipid membrane and cannot reproduce.
C. The work on coacervates was done by Oparin.
D. They are protobionts with polysaccharides, proteins, and water .

Answer

### Step-by-Step Solution

1. **Understanding Coacervates**: Coacervates are colloidal aggregates that are believed to be precursors to living cells. They are formed from organic molecules such as proteins, lipids, and polysaccharides.

2. **Analyzing the Options**:
- **Option 1**: "They are protein aggregates."
- This statement is true. Coacervates can indeed contain proteins as part of their composition.

- **Option 2**: "They do not have a lipid membrane and cannot reproduce."
- This statement is false. Coacervates do have lipid components, and they are considered to have the potential for reproduction, as they are thought to be precursors to cellular life.

- **Option 3**: "The work on coacervates was done by Oparin."
- This statement is true. The theory of coacervates was indeed proposed by Alexander Oparin, along with J.B.S. Haldane.

- **Option 4**: "They are protobionts with polysaccharides, proteins, and water."
- This statement is also true. Coacervates are considered protobionts and consist of polysaccharides, proteins, and water.

3. **Identifying the Incorrect Statement**:
- From the analysis, Option 2 is the only statement that is not true about coacervates. They do have lipid membranes and can reproduce.

4. **Conclusion**: The answer to the question "Which of the following is not true about coacervates?" is **Option 2**.