Question

Scientists first saw cells in the early 1900s.
true/ false

Answer 1

true

Answer 2

1632–1723: Antonie van Leeuwenhoek teaches himself to grind lenses, builds a microscope and draws protozoa, such as Vorticella from rain water, and bacteria from his own mouth.
1665: Robert Hooke discovers cells in cork, then in living plant tissue using an early microscope.
1839: Theodor Schwann and Matthias Jakob Schleiden elucidate the principle that plants and animals are made of cells, concluding that cells are a common unit of structure and development, and thus founding the cell theory.
The belief that life forms can occur spontaneously (generatio spontanea) is contradicted by Louis Pasteur (1822–1895) (although Francesco Redi had performed an experiment in 1668 that suggested the same conclusion).
1855: Rudolf Virchow states that cells always emerge from cell divisions (omnis cellula ex cellula).

Final answer: False