Who was the first to explain that the cells divide and new cells are formed from the pre-existing cells (Omnis cellu- la-e-ce/lula) in 1855?

Options

A. Louis Pasteur
B. RudolfVirchow
C. Nagali
D. Robert Brown

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks who first explained that cells divide and new cells are formed from pre-existing cells, referencing the phrase "Omnis cellula e cellula" from 1855.

2. **Identifying Key Terms**: The phrase "Omnis cellula e cellula" translates to "every cell from a cell," which is a fundamental concept in cell biology indicating that all cells arise from existing cells.

3. **Reviewing Historical Figures**: The question provides four options: Lewis Pasteur, Rudolf Virchow, Nagy Lee, and Robert Rouran. We need to determine which of these scientists is associated with the concept of cell division and the formation of new cells from pre-existing ones.

4. **Recalling Relevant Information**: Rudolf Virchow is known for his contributions to cell theory and is credited with the statement "Omnis cellula e cellula." He proposed that all cells come from other cells, thus emphasizing the continuity of life through cellular division.

5. **Conclusion**: Based on the historical context and contributions to cell theory, the correct answer to the question is Rudolf Virchow.

**Final Answer**: Rudolf Virchow was the first to explain that cells divide and new cells are formed from pre-existing cells in 1855.

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