Which scientist proposed that cells come from other cells?
A. Hooke
B. van Leeuwenhoek
C. Schwann
D. Virchow
http://en.wikipedia.org/wiki/Cell_theory
Rudolf virchow
The correct answer is D. Virchow. To arrive at this answer, we need some basic knowledge of the history of cell theory and the contributions of different scientists. Here's a breakdown of each option:
A. Hooke - Robert Hooke was an English scientist who first described cells in 1665 while observing a thin slice of cork through a microscope. However, he did not propose that cells come from other cells.
B. van Leeuwenhoek - Antonie van Leeuwenhoek, a Dutch scientist, made significant contributions to microbiology by developing the first powerful microscopes and observing microorganisms. However, he also did not propose that cells come from other cells.
C. Schwann - Theodor Schwann, a German physiologist, is known for formulating the cell theory along with Matthias Jakob Schleiden (a botanist). They proposed that all organisms are composed of cells. However, they did not specifically suggest that cells come from other cells.
D. Virchow - Rudolf Virchow, a German physician, is credited with the idea that cells come from preexisting cells. In 1855, he stated the famous phrase "omnis cellula e cellula," meaning "every cell comes from a cell." This concept, known as cell division, is a crucial component of the cell theory.
So, the correct answer is D. Virchow because he proposed the theory that cells come from other cells.