Entamoeba histolytica was discovered by

Options

A. Losch
B. Lancisi
C. Ronald Ross
D. Lambie

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: The question asks about the discovery of *Entamoeba histolytica*, which is a unicellular eukaryote known to cause intestinal infections.

2. **Research the Discoverer**: The transcript mentions that *Entamoeba histolytica* was discovered by Fedrich Losch in 1873.

3. **Understand the Context**: *Entamoeba histolytica* is responsible for causing amoebic dysentery, which is characterized by symptoms such as loose stools, abdominal cramping, and stomach pain.

4. **Eliminate Incorrect Options**: The other names mentioned (Dr. Lars Lansy, Ronald Ross, and Lamby) are associated with different discoveries:
- Dr. Lars Lansy is linked to malaria research.
- Ronald Ross is known for his work on the transmission of malaria by mosquitoes.
- Lamby was the first doctor in Europe to use insulin for diabetes treatment.

5. **Conclude the Answer**: Based on the information gathered, the correct answer to the question is that *Entamoeba histolytica* was discovered by Fedrich Losch.

**Final Answer**: *Entamoeba histolytica* was discovered by Fedrich Losch in 1873.

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