Ratio of protein and lipid in the membrane of erythrocytes of human being is :-

Options

A. 1.8
B. 1.3
C. 0.8
D. 0.6

Answer

To determine the ratio of protein to lipid in the membrane of erythrocytes (red blood cells) in humans, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Composition of the Erythrocyte Membrane**:
- The membrane of erythrocytes is primarily composed of proteins and lipids, along with a small percentage of oligosaccharides.

2. **Identify the Percentages of Proteins and Lipids**:
- According to the information provided, the erythrocyte membrane consists of approximately:
- 40% proteins
- 52% lipids
- 8% oligosaccharides (which we will not consider for the protein-lipid ratio)

3. **Calculate the Ratio of Proteins to Lipids**:
- To find the ratio of proteins to lipids, we can express it as:
\[ \text{Ratio of Protein to Lipid} = \frac{\text{Percentage of Proteins}}{\text{Percentage of Lipids}} = \frac{40}{52} \]

4. **Simplify the Ratio**:
- Simplifying \( \frac{40}{52} \):
\[ \frac{40 \div 4}{52 \div 4} = \frac{10}{13} \]
- To convert this to a decimal for easier understanding, we can calculate:
\[ \frac{10}{13} \approx 0.769 \text{ (approximately)} \]

5. **Determine the Closest Option**:
- The options provided are 1.8, 1.3, 0.8, and 0.6. The calculated ratio of approximately 0.769 is closest to 0.8.

6. **Final Answer**:
- Therefore, the ratio of protein to lipid in the membrane of erythrocytes of human beings is approximately **0.8**.