Cell Theory• State the parts of the cell theory.• Identify the 2 types of cells (with/without nucleus).• Name 2 eukaryote cells.
Cells & Cell Theory In1665, Robert Hooke was the first person to describe cells when looking at cork with a microscope. He observed cells in plants and fungi. In 1673, Anton von Leeuwenhoek discovered single-celled organisms (protists) in pond scum. He was the first to see blood cells, bacteria cells, and yeast cells.
Cells and Cell Theory In 1838, Matthias Schleiden concluded that all plants parts were made of cells. In 1839, Theodor Schwann concluded that all animal tissues were made of cells. In 1858, Rudolf Virchow stated that all cells could form only from other cells. These 3 discoveries led to the cell theory.
Cells and Cell TheoryCell Theory states: All organisms are made of one or more cells. The cell is the basic unit of ALL living things. All cells comes from existing cells.
Cell and Cell Theory Prokaryote Eukaryote Single-celled Multi-cellular organisms that DO organism that DO NOT have a have a nucleus nucleus or and membrane- membrane-bound bound organelles. organelles. Plant and animal Eubacteria and archaebacteria