Most abundant Lipid in cell membrane is

Options

A. phospholipid
B. steroid
C. cholesterol
D. waxes

Answer

**Step-by-Step Solution:**

1. **Understanding Cell Membrane Composition:**
- The cell membrane is the outer layer of a cell, providing protection and regulating what enters and exits the cell. It is primarily composed of lipids, proteins, and carbohydrates.

2. **Identifying Types of Lipids:**
- The main types of lipids found in cell membranes include phospholipids, cholesterol, steroids, and waxes. Each type has a specific role in the structure and function of the membrane.

3. **Focusing on Phospholipids:**
- Among these lipids, phospholipids are the most abundant. They consist of a hydrophilic (water-attracting) "head" and two hydrophobic (water-repelling) "tails." This unique structure allows them to form a bilayer, which is essential for the membrane's integrity and function.

4. **Role of Phospholipids in Membrane Structure:**
- The phospholipid bilayer forms the fundamental structure of the cell membrane, creating a barrier that separates the interior of the cell from the external environment. The hydrophilic heads face outward towards the water inside and outside the cell, while the hydrophobic tails face inward, away from the water.

5. **Conclusion:**
- Therefore, the most abundant lipid in the cell membrane is phospholipid.

**Final Answer:**
The most abundant lipid in the cell membrane is **phospholipid**.

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