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AS Biology Revision…read more

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Prokaryotic Cell…read more

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Eukaryotic cell…read more

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Prokaryote vs. Eukaryote
· Eukaryotic cells are larger and more complex than
prokaryotic cells. They are adapted to preform a wide
variety of specialist roles so have varied morphology
(e.g. neurone, red blood cell) and organelle
composition (what's inside them). Some eukaryotic
cells have cell walls (plants, fungi) while others don't
· Prokaryotic cells are smaller and much more simpler
than eukaryotes. There are 3 main cell shapes (rods,
cocci and spirals), they lack the structure and
organisation of eukaryotic cells. Prokaryotes have cell
walls but their composition differs from the cell walls
of eukaryotic cells.…read more

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Differences cont.
Eukaryotic Prokaryotic
Large cells Small cells
DNA is linear DNA is circular
Nucleus present (DNA inside) No nucleus (dna in cytoplasm)
No cell wall for animals, cellulose wall in plants and Cell wall of polysaccharide (not chitin or cellulose)
chitin wall in fungi
Many organelles, mitochondrion Few organelles, no mitochondrion
Big ribosomes Small Ribosomes
Example = skin cell Example = E coli bacterium…read more

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