Components of the eukaryotic plasma membrane are

Options

A. Protein and liqids
B. Protein and carbohydrates
C. Lipids (20-79%), proteins (20-70%), oligosaccharides (1-5%), and water (20%)
D. Lipids (20-70%), proteins (20-79%), proteins (20-70%), carbohydrates (1-5%) and DNA

Answer

### Step-by-Step Text Solution:

1. **Understanding the Eukaryotic Plasma Membrane**: The plasma membrane of a eukaryotic cell is primarily composed of a phospholipid bilayer. This structure forms the basic framework of the membrane.

2. **Components of the Plasma Membrane**:
- **Phospholipids**: These are the main structural components, forming a bilayer that provides a barrier to most water-soluble substances.
- **Proteins**: Integral and peripheral proteins are embedded or associated with the membrane. They play various roles, including transport, signaling, and structural support. The protein content can vary from 20% to 70%.
- **Oligosaccharides**: These carbohydrate molecules are attached to proteins and lipids on the extracellular surface of the membrane. They are crucial for cell recognition and communication, constituting about 1% to 5% of the membrane composition.
- **Water**: Water molecules are also present in the plasma membrane, contributing to its fluidity and overall structure, making up about 20% of the membrane.

3. **Summary of Composition**:
- Lipids: 20% to 80%
- Proteins: 20% to 70%
- Oligosaccharides: 1% to 5%
- Water: Approximately 20%

4. **Identifying the Correct Option**: Based on the above components and their respective percentages, the correct answer to the question regarding the components of the eukaryotic plasma membrane is option number 3.