Which of the following is not a components of Lecithin?

Options

A. Choline
B. Phosphate group
C. Sphingosine
D. Fatty acid

Answer

To solve the question "Which of the following is not a component of Lecithin?", we will follow these steps:

### Step 1: Understand what Lecithin is
Lecithin is a complex lipid, also known as phosphatidylcholine. It plays a crucial role in cell membrane structure and function.

**Hint:** Remember that Lecithin is synonymous with phosphatidylcholine.

### Step 2: Identify the components of Lecithin
Lecithin is made up of several key components:
- **Choline molecule**: This is a vital part of Lecithin.
- **Phosphate group**: This group is also a component of Lecithin.
- **Glycerol molecule**: Lecithin contains glycerol as part of its structure.
- **Fatty acid chains**: Lecithin has two fatty acid chains attached to the glycerol.

**Hint:** Lecithin consists of choline, phosphate, glycerol, and fatty acids.

### Step 3: Analyze the options given in the question
Now, let’s look at the options provided in the question:
1. Choline
2. Phosphate group
3. Sphingocene
4. Fatty acid

From our understanding of Lecithin's structure, we can identify which of these is not a component.

**Hint:** Cross-reference each option with the components of Lecithin.

### Step 4: Identify the incorrect component
- **Choline**: Present in Lecithin.
- **Phosphate group**: Present in Lecithin.
- **Sphingocene**: This is not a component of Lecithin.
- **Fatty acid**: Present in Lecithin.

**Hint:** Look for the term that is not associated with Lecithin.

### Step 5: Conclusion
Based on the analysis, the component that is not part of Lecithin is **Sphingocene**. Therefore, the correct answer is option 3: Sphingocene.

**Final Answer:** Sphingocene is not a component of Lecithin.