By: Marina Járboles, Cristina Alierta and Pilar Ballesteros.
CELL
Cell Theory
Cell scientists
1) Robert Hooke
2) Antony Van Leeuwenhoek
3) Robert Brown
4) Mattias Schleiden
5) Theodor Schwann
6) Rudolph Virchow
History of microscopes
Types of microscopes
Optical and electron microscopes.
11. • 6) All cells have the same basic chemical
composition.
12. Activity
• Say which of this statements belong to the
original theory and which ones are new:
• Cells come from pre-existing cells by division.
• All cells have the same basic chemical
composition.
• Hereditary information (DNA) is passed on from
cell to cell.
• All living things are made up of cells.
• Cells are the basic structural and functional unit
of life.
• Energy flow occurs within cells.
13. Answer
• Original theory:
• Cells come from pre-existing cells by division.
• All living things are made up of cells.
• Cells are the basic structural and functional unit of life.
• New statements:
• Energy flow occurs within cells.
• All cells have the same basic chemical composition.
• Hereditary information (DNA) is passed on from cell to
cell.
14. Important scientists in cell
theory
• 1) Robert Hooke
• 2) Antony Van Leeuwenhoek
• 3) Robert Brown
• 4) Mattias Schleiden
• 5) Theodor Schwann
• 6) Rudolph Virchow
25. Cell theory
• 1. All living things are made up of cells.
• 2. Cells are the basic structural and
functional unit of life.
• 3. Cells come from pre-existing cells by
division.
26. • This is how an eukaryotic animal cell
would look like:
27. Activity
• Say the name of the scientists who
contributed with the cell theory in order
29. Major contibutions to the
cell theory
• Say how do you think each scientist contributed
to the creation of the cell theory:
• Hooke
• Van Leeuwenhoek
• Brown
• Schleiden
• Schwann
• Virchow
30. Major contibutions to the cell theory
• Hooke: The first to identify and name a cell
• Van Leeuwenhoek: Made better lenses and was
the first to observe a living cell
• Brown: He discovered the nucleus of cells
• Schleiden: First to note that all plants were made
up of cells
• Schwann: Concluded that all living things were
made up of cells
• Virchow: Proposed that cells come from other
cells
37. True or false
• Hooke was the first man to make a real
microscope
• Hooke was the first man to use a three-
lens configuration in a microscope
• There are still some Jansen’s
microscopes
• Romans invented microscopes
38. • Hooke was the first man to make a real
microscope: False
• Hooke was the first man to use a three-
lens configuration in a microscope: True
• There are still some Jansen’s
microscopes: False
• Romans invented microscopes: False
