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Cell theory
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Published on Nov 18, 2015
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1.
Tour of the cell
Alison Meade, Savannah McAlister
2.
plant and animal cell
animal cells don't have a cell wall, or chloroplast.
both have a plasma membrane.
plant cells don't have flagellum centriole.
each cell had a prominent nucleus.
cytoplasm is between the nucleus and the plasma membrane
3.
Prokaryotic and eukaryotic cells
prokaryotic cells do not have a nucleus and most other organelles
eukaryotic cells have a nucleus surrounded by its own membrane
the Greek meaning of eukaryotic is "true kernel"
kernel means nucleus which prokaryotic cells lack
eukaryotic cells are typically 10-100 micrometers in diameter
4.
Cell theory
micrograph-a photo of the view through a microscope
cell theory-all living things are made of cells
the cell is the basic unit of structure and function in living things
cell structure is so small the even magnifying it 1000x isn't enough to see it
light microscopes can magnify things as small as bacterium or larger
5.
passive and active transport
diffusion across a membrane is passive transport
active transport is when a cell uses energy to move molecules
active transport plays a part in maintaining the cells chem. environment
specific proteins allow the passive transport of different substances
small molecules pass readily through passive transport than large ones
6.
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