1st to see a living organism under a microscope; pond water/teeth scrapings
Theodore Schwann
looked @ animals under microscope
all animals made up of cells
Matthias Schleiden
all plants made up of cells
Rudolph Virchow
all cells come from pre-existing cells
Cell Theory
1. All living things are made up of cells2. Cells are the basic unit of structure & function (Basic Unit of Life)3. Cells come from pre-existing cells (Cell Division)
Endosymbiotic Theory
Lynn Margulis; organelles were at one time their own cells
Cell Types
1. Prokaryotic
2. Eukaryotic
Prokaryotic
-no nucleus
-DNA= free floating
-tiny-cell wall and cell membrane
-flagella
-tail that allows cell to move
-no membrane-bound organelles
Eukaryotic
nucleus
DNA= in nucleus
larger
no flagella
plant/animal cells
membrane-bound organelles
Components
1. Cell membrane- outside of cell (plasma membrane)
2. Nucleus(DNA)- cell's genetic material
3. Cytoplasm- between nucleus and cell membrane (cytosol)