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”
2The Discovery of Cells 1838 Matthias Schleiden *Studied lots of plants *Concluded that all plants are made of cells
3All animals are composed of cells The Discovery of Cells1839 Theodor SchwannAll animals are composed of cells
4All cells come from other living things. The Discovery of Cells1858 Rudolph VirchowAll cells come from other living things.
5The 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.
6Unicellular vs. Multicellular Unicellular- single celledExamples: bacteria, yeast, Amoeba, some algaeCarry out all life processes in one cell.
7Unicellular vs. Multicellular Multicellular- many celledEvolved from unicellular organismsCells are specialized to perform certain functionsExamples: nerve cells- carry impulsesleaf cells- photosynthesize
8Plant vs. Animal Plant Cell wall One large vacuole Chloroplasts No centriolesRectangular shapeAnimalNo cell wallSmall vacoulesNo chloroplastscentriolesVarious shapes
9TYPES OF CELLS PROKARYOTIC Small No nucleus No membrane bound organellesExample: bacteria
10TYPES OF CELLS EUKARYOTIC Larger More complex Contain membrane bound organellesContain a nucleusExample: plant and animal cells