_________________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, we need to identify the scientist who demonstrated that viruses could be crystallized and that these crystals are primarily composed of proteins.

### Step-by-Step Solution:

1. **Identify the Context**: The question is asking about a specific scientist who showed that viruses can be crystallized and that these crystals consist mainly of proteins.

2. **Review the Scientists Mentioned**:
- **Iwanski**: He studied the tobacco mosaic disease but did not focus on crystallization.
- **Bezernik**: He explored the infectious nature of viruses but did not deal with crystallization.
- **Stanley**: He is known for his work on the crystallization of viruses and proposed that the crystals consist mainly of proteins.
- **Diener**: He studied viroids, which are smaller than viruses, and did not work on crystallization.

3. **Select the Correct Scientist**: Based on the information reviewed, **Stanley** is the scientist who showed that viruses could be crystallized and that these crystals are primarily made up of proteins.

4. **Fill in the Blank**: The completed statement is: "Stanley showed that viruses could be crystallized, and crystals majorly consist of proteins."

### Final Answer:
Stanley

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