In Human beings, the membrane of the erythrocyte has approximately :

Options

A. 52% Protein and 40% Lipids
B. 80% Protein and 20% Lipids
C. 40% Protein and 52% Lipids
D. 52% Carbohydrate and 20% Protein

Answer

To solve the question regarding the composition of the erythrocyte membrane in human beings, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks about the composition of the erythrocyte (red blood cell) membrane in human beings, specifically the approximate percentages of its components.

2. **Identify the Components of the Membrane**: The erythrocyte membrane is primarily composed of proteins, lipids, and carbohydrates. However, the question focuses on proteins and lipids.

3. **Refer to Biochemical Investigations**: Biochemical studies have shown that cell membranes, including that of erythrocytes, consist of a specific ratio of proteins and lipids.

4. **State the Composition of Erythrocyte Membrane**: In human erythrocytes, the membrane is composed of approximately 52% proteins and 40% lipids.

5. **Conclude the Answer**: Based on the information gathered, the correct answer to the question is that the membrane of the erythrocyte in human beings has approximately 52% protein and 40% lipids.

### Final Answer:
The membrane of the erythrocyte in human beings has approximately 52% protein and 40% lipids.

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