Choose the odd one w.r.t eukaryotic cells.

Options

A. Cell membrane
B. Mesosomes
C. Lysosomoes
D. Ribosomes

Answer

To solve the question "Choose the odd one with respect to eukaryotic cells," we will analyze each option provided in the context of eukaryotic cell characteristics.

### Step-by-Step Solution:

1. **Understand Eukaryotic Cells**:
Eukaryotic cells are characterized by having a true nucleus enclosed by a nuclear membrane and various membrane-bound organelles.

2. **Examine the Options**:
- **Cell Membrane**:
The cell membrane (or plasma membrane) is a fundamental structure in all cells, including eukaryotic cells. It is made up of a lipid bilayer and is essential for transport and communication.
- **Conclusion**: Not the odd one out.

- **Mesosomes**:
Mesosomes are invaginations of the plasma membrane found in prokaryotic cells. They are involved in processes like respiration and cell division. Eukaryotic cells do not have mesosomes.
- **Conclusion**: This is the odd one out.

- **Lysosomes**:
Lysosomes are membrane-bound organelles in eukaryotic cells that contain hydrolytic enzymes for digestion and waste disposal. They are characteristic of eukaryotic cells.
- **Conclusion**: Not the odd one out.

- **Ribosomes**:
Ribosomes are present in both prokaryotic and eukaryotic cells. In eukaryotes, they are larger (80S) compared to prokaryotic ribosomes (70S) and are essential for protein synthesis.
- **Conclusion**: Not the odd one out.

3. **Final Decision**:
Based on the analysis, the option that does not belong to eukaryotic cells is **mesosomes**. Therefore, the correct answer is **mesosomes**.

### Summary:
The odd one out with respect to eukaryotic cells is **mesosomes**.

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