The cell theory states that all cells arise from existing cells. Which scientist first
determined this part of the cell theory?
A. Hooke
B. Schleiden
C. Schwann
D. Virchow

Respuesta :

Answer: C. Theodore Schwann

Explanation: The classical cell theory was proposed by Theodor Schwann in 1839. There are three parts to this theory. The first part states that all organisms are made of cells. The second part states that cells are the basic units of life.