CELL THEORY

• Robert Hooke (1665) coined the term cell.
• Anton van Leeuwenhoek, observed a drop of pond water in his microscope, discovering animalcules.
• Matthias Schleiden discovered that plants have cells, while Theodor Schwan discovered that animals have cells.
• POSTULATES OF THE CELL THEORY

  1. All organisms are made of cells.
  2. All cells come from pre-existing cells.
  3. The basic unit of life is cell.
• Rufolf Virchow, in 1838, stated "Omnis cellula e cellula," meaning all cells arise from pre-existing cells.
• He formulated the second postulate of the Cell Theory.

  Rudolf Virchow
• He formulated the second postulate of the Cell Theory.

  Rudolf Virchow
• He formulated the first postulate of the Cell theory.

  Theodor Schwann
• He formulated the first postulate of the Cell theory.

  Theodor Schwann
• Where did Robert Hooke first observe cells?

  Cork
• Where did Robert Hooke first observe cells?

  Cork
• Who discovered what was being described in the image?

  Anton van Leeuwenhoek

  
• Which scientist is associated with the image below?

  Robert Hooke

  
• He is the father of microbiology.

  Anton van Leeuwenhoek
• They contributed to the formulation of the first postulate in the Cell Theory.

  Theodor Schwann and Matthias Schleiden
• He formulated the third postulate of the Cell Theory.

  Robert Hooke