Presentation on theme: "*Saw empty cubicles that he called “CELLS”"— Presentation transcript:
1 *Saw empty cubicles that he called “CELLS” The Discovery of Cells1665 Robert Hooke*Used a primitive microscope to examine cork*Saw empty cubicles that he called “CELLS”
2 The Discovery of Cells 1838 Matthias Schleiden *Studied lots of plants *Concluded that all plants are made of cells
3 All animals are composed of cells The Discovery of Cells1839 Theodor SchwannAll animals are composed of cells
4 All cells come from other living things. The Discovery of Cells1858 Rudolph VirchowAll cells come from other living things.
5 The Cell Theory All organisms are composed of cells. The cell is the basic unit of structure and function.All cells are produced from other cells.
6 Unicellular vs. Multicellular Unicellular- single celledExamples: bacteria, yeast, Amoeba, some algaeCarry out all life processes in one cell.
7 Unicellular vs. Multicellular Multicellular- many celledEvolved from unicellular organismsCells are specialized to perform certain functionsExamples: nerve cells- carry impulsesleaf cells- photosynthesize
8 Plant vs. Animal Plant Cell wall One large vacuole Chloroplasts No centriolesRectangular shapeAnimalNo cell wallSmall vacoulesNo chloroplastscentriolesVarious shapes
9 TYPES OF CELLS PROKARYOTIC Small No nucleus No membrane bound organellesExample: bacteria
10 TYPES OF CELLS EUKARYOTIC Larger More complex Contain membrane bound organellesContain a nucleusExample: plant and animal cells