Which of the following lipids is found in the cell membrane.

Options

A. Lecithin
B. Palmitic acid
C. Arachidonic acid
D. Glycerol

Answer

To solve the question "Which of the following lipids is found in the cell membrane?", we will analyze each of the provided options step by step.

### Step-by-Step Solution:

1. **Identify the Options**: The options given are:
- Option 1: Lecithin
- Option 2: Palmitic Acid
- Option 3: Arachidonic Acid
- Option 4: Glycerol

2. **Analyze Option 1: Lecithin**:
- Lecithin is a type of phospholipid that is a major component of cell membranes. It plays a crucial structural role in forming the lipid bilayer of the cell membrane.
- **Conclusion**: This option is correct.

3. **Analyze Option 2: Palmitic Acid**:
- Palmitic acid is a saturated fatty acid found in various animal and plant fats. It is not a structural component of the cell membrane.
- **Conclusion**: This option is incorrect.

4. **Analyze Option 3: Arachidonic Acid**:
- Arachidonic acid is an omega-6 fatty acid that is mainly found in the fatty parts of meat and fish. While it is important for signaling and inflammatory processes, it is not a primary component of the cell membrane.
- **Conclusion**: This option is incorrect.

5. **Analyze Option 4: Glycerol**:
- Glycerol is a component of triglycerides and phospholipids, but it is not found in the cell membrane as a standalone lipid. It is part of the structure of fats and oils.
- **Conclusion**: This option is incorrect.

### Final Answer:
The correct answer is **Option 1: Lecithin**.