Cell membrane of bacteria is made up of

Options

A. Cellulose and lipid
B. Chitin
C. Lipid + Protein
D. Protein and Cellulose

Answer

### Step-by-Step Text Solution

1. **Understanding Bacteria**:
- Bacteria are unicellular organisms classified as prokaryotes. This means they lack a defined nucleus and membrane-bound organelles.

2. **Cell Structure**:
- Each bacterial cell has a cell membrane that is crucial for maintaining the cell's integrity and regulating what enters and exits the cell.

3. **Composition of the Cell Membrane**:
- The bacterial cell membrane is primarily composed of a bilayer of phospholipids. Phospholipids have hydrophilic (water-attracting) heads and hydrophobic (water-repelling) tails, which arrange themselves into a bilayer structure.

4. **Role of Proteins**:
- Embedded within this phospholipid bilayer are proteins. These proteins can be integral (spanning the membrane) or peripheral (attached to the surface). They play various roles, including transport, signaling, and structural support.

5. **Conclusion**:
- Therefore, the cell membrane of bacteria is made up of lipids (specifically phospholipids) and proteins.

6. **Final Answer**:
- The correct option from the given choices is "Lipid plus Protein."