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Origin, prokaryotic cell, Eukaryotic cell, Cell theory, All cells, Types…
Origin
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Archaea
All prokaryotic.
Ancient bacteria, instead of evolving, settled to hospitable environments but adapted to live in them, live in the Dead Sea. halophytes, thermophils (live in active volcanoes or thermo beds in the ocean).
Use archaea bacteria for PCR tests.
Bacteria
All prokaryotic, single celled
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Cell theory
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The cell is the basic unit of structure and organisation in organisms (anything smaller is not a cell, could be a part of a cell but is not a cell)
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size, shape and function
Nerve cells
Long, so that they need to transmit nerve signals to different parts of the body
Muscle cells
Long, so that they can contract and shorten up, thereby moving body parts
Epithelial cells
are cuboidal, columnar, or squamous depending on there location in the body
Red bloos cells
especially small because they need to get through the smallest capillaries of the circulatory system (considered eukaryotic because they did have a nucleus at some stage)
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Eukaryotic cell division
Somatic
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For growth, development and repair
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