Which of the following does not possess lipo-proteinaceous membrane?

Options

A. Lysosomes
B. Lomasomes
C. Ribosomes
D. Sphaerosomes

Answer

To determine which of the following does not possess a lipoproteinaceous membrane, we need to analyze each option given: lysosomes, lomasomes, ribosomes, and cepharosomes.

### Step-by-Step Solution:

1. **Understanding Lipoproteinaceous Membranes**:
- Lipoproteinaceous membranes are composed of lipids and proteins, forming a boundary around organelles or cells.

2. **Analyzing Lysosomes**:
- Lysosomes are membrane-bound organelles that contain digestive enzymes. They have a lipoproteinaceous membrane that encloses their contents.

3. **Analyzing Lomasomes**:
- Lomasomes are also membrane-bound structures involved in the transport of materials within the cell. They possess a lipoproteinaceous membrane.

4. **Analyzing Cepharosomes**:
- Cepharosomes are specialized organelles that also have a membrane structure. They are involved in various cellular processes and possess a lipoproteinaceous membrane.

5. **Analyzing Ribosomes**:
- Ribosomes are unique among the options listed. They are non-membrane bound organelles composed of ribonucleic acid (RNA) and proteins. They do not have a lipoproteinaceous membrane surrounding them.

6. **Conclusion**:
- Since ribosomes lack a membrane, the correct answer to the question is **ribosomes**.

### Final Answer:
Ribosomes do not possess a lipoproteinaceous membrane.