Pathogenic nature of Entamoeba was discovered by

Options

A. Pasteur
B. Koch
C. Jenner
D. Losch

Answer

To solve the question regarding who discovered the pathogenic nature of Entamoeba, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Question**: The question asks about the scientist who discovered the pathogenic nature of Entamoeba.

2. **List the Options**: The options provided are:
- A) Pasteur
- B) Koch
- C) Jenner
- D) Lorsch

3. **Research Each Scientist**:
- **Louis Pasteur**: Known for his work on microbial fermentation and pasteurization, but not specifically for Entamoeba.
- **Robert Koch**: A bacteriologist known for identifying the causative agents of tuberculosis and cholera, and for formulating Koch's postulates. He did not discover Entamoeba.
- **Edward Jenner**: Recognized for developing the smallpox vaccine, unrelated to Entamoeba.
- **Frederick Lorsch**: He is credited with the discovery of Entamoeba histolytica and its pathogenic nature in 1873.

4. **Evaluate the Information**: Based on the research, only Frederick Lorsch is associated with the discovery of Entamoeba histolytica and its pathogenic effects.

5. **Select the Correct Answer**: The correct answer is D) Lorsch.

### Final Answer:
The pathogenic nature of Entamoeba was discovered by Frederick Lorsch.

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