_________________showed that viruses could be crystallized,and crystals majorly consist of proteins.

Options

A. Ivanowsky
B. Beijernick
C. Stanely
D. Diener

Answer

To solve the question "_________________ showed that viruses could be crystallized, and crystals majorly consist of proteins," we need to identify the scientist who made this discovery.

1. **Understanding the Question**: The question is asking for the name of the scientist who demonstrated that viruses can be crystallized and that these crystals are primarily made of proteins.

2. **Reviewing the Options**:
- A. Iwanuski
- B. Bajerink
- C. Stanley
- D. Diner

3. **Analyzing Each Scientist's Contribution**:
- **Iwanuski**: He is known for his work on the tobacco mosaic disease and for identifying that it is caused by a virus. However, he did not crystallize viruses.
- **Bajerink**: He worked on the tobacco mosaic virus and described it as an "Infectious Living Fluid," but he did not crystallize the virus either.
- **Stanley**: He is credited with the crystallization of viruses and showed that the crystals consist mainly of proteins. This is the key point we are looking for.
- **Diner**: He discovered viroids, which are smaller than viruses and lack protein, but he did not work on crystallizing viruses.

4. **Conclusion**: Based on the contributions of each scientist, the correct answer is **C. Stanley**. He showed that viruses could be crystallized and that these crystals are primarily made of proteins.