Plasma membrane is made of

Options

A. proteins and carbohydrates
B. proteins and lipids
C. proteins , lipids and carbohydrates
D. proteins , some nucleic acid and lipids

Explanation

**Step-by-Step Solution:**

1. **Understanding the Plasma Membrane:**
- The plasma membrane is a crucial component of cells, acting as a barrier that separates the interior of the cell from the external environment.

2. **Composition of the Plasma Membrane:**
- The plasma membrane is primarily composed of three types of molecules: lipids, proteins, and carbohydrates.

3. **Identifying the Main Components:**
- **Lipids:** The most abundant lipids in the plasma membrane are phospholipids, which form a bilayer. This bilayer is essential for the structure and function of the membrane.
- **Proteins:** Proteins are embedded within the lipid bilayer and can either span the membrane or be attached to its surface. They play various roles, including transport, signaling, and structural support.
- **Carbohydrates:** These are present in smaller amounts, usually attached to proteins (glycoproteins) or lipids (glycolipids), and are involved in cell recognition and communication.

4. **Evaluating the Options:**
- **Option A (Proteins and Carbohydrates):** This option is incorrect because it does not include lipids, which are a major component of the plasma membrane.
- **Option B (Proteins and Lipids):** This option is partially correct but does not mention carbohydrates, which are also present.
- **Option C (Proteins, Lipids, and Carbohydrates):** This option includes all three components and is the most accurate representation of the plasma membrane's composition.
- **Option D (Proteins, some Nucleic Acids, and Lipids):** This option is incorrect because nucleic acids are not a component of the plasma membrane.

5. **Conclusion:**
- Based on the analysis, the correct answer is **Option C: Proteins, Lipids, and Carbohydrates**.