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The observations of Hooke and van Leeuwenhoek documenting the existence of microscopic cells formed the basis of what important theory?A. the cell theory stating that all living things are composed of cellsB. the theory of spontaneous generation, which held that life forms could arise spontaneouslyC. the theory of chemotherapy, or use of antimicrobials to destroy pathogenic organismsD. the germ theory of disease and causative agents

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payshencec21

A. the cell theory stating that all living things are composed of cells.

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-Payshence

The existence of microscopic cells formed the basis of the cell theory stating that all living things are composed of cells.

  • The cell theory states that all biological organisms are composed of cells; cells are the unit of life and all life come from preexisting life. The cell theory is so established today that it forms one of the unifying principles of biology.
  • The cell was first discovered by Robert Hooke in 1665 using a microscope. The first cell theory is credited to the work of Theodor Schwann and Matthias Jakob Schleiden in the 1830s.
  • Theodor Schwann,was born on December 7, 1810, Neuss, Prussia [Germany]—died January 11, 1882, Cologne, Germany, German physiologist who founded modern histology by defining the cell as the basic unit of animal structure.
  • The three tenets of cell theory are All organisms are made of cells. Cells are the smallest unit of life,Cells are the most fundamental unit of life,Cells come from other cells.

To learn more about Cells and Cell Theory:https://brainly.com/subject/biology

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