____A_____ showed that viruses could be crystallized and the crystals largely consist of __B__.

Options

A. A-Stanley, B-Lipid
B. A-Ivanovsky, B-Protein
C. A-Pasteur, B-Carbohydrate
D. A-Stanley, B-Proteins

Answer

To answer the question, we need to fill in the blanks with the correct terms related to the crystallization of viruses.

**Step 1: Identify the scientist who showed that viruses could be crystallized.**
- The scientist known for demonstrating that viruses could be crystallized is **Stanley**. He was the first to crystallize a virus, which was a significant achievement in virology.

**Step 2: Determine what the crystals largely consist of.**
- Upon crystallization, it was found that the structure surrounding the virus, known as the **capsid**, is primarily made up of **protein**. The capsid is composed of smaller protein units that form the protective layer around the viral genetic material.

**Final Answer:**
A: Stanley
B: Protein

Thus, the complete answer is: **Stanley showed that viruses could be crystallized and the crystals largely consist of protein.**

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