Detailed structure of the membrane was studied after the advent of electron microscope during

Options

A. 1930 s
B. 1950 s
C. 1970 s
D. 1990 s

Answer

To answer the question regarding when the detailed structure of the membrane was studied after the advent of the electron microscope, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Electron Microscope**: The electron microscope was developed in 1931 by scientists Ernst Ruska and Max Knoll. This invention allowed scientists to observe structures at a much higher resolution than was possible with light microscopes.

2. **Timeline of Discoveries**:
- The electron microscope was invented in **1931**, but this was primarily a time for its development and initial use.
- The detailed study of cellular structures, including membranes, began to take place in the following decades.

3. **Identifying the Correct Decade**:
- In the **1930s**, the focus was on developing the technology of the electron microscope itself.
- By the **1950s**, researchers began to utilize the electron microscope to study the intricate details of cellular structures, including the membranes.

4. **Significant Findings**: It was during the 1950s that scientists established that cell membranes are primarily composed of a phospholipid bilayer, a crucial finding in cell biology.

5. **Conclusion**: Based on the timeline and significant findings, the correct answer to the question is that the detailed structure of the membrane was studied in the **1950s**.

### Final Answer:
The detailed structure of the membrane was studied after the advent of the electron microscope during the **1950s**.

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