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Prokaryotes
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"Before Nucleus" No membrane bound organelles Free DNA, association with some proteins Always have cell walls with a COMPLEX structure Usually divide by binary fission
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Eukaryotes
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"True Nucleus"Have organellesEnclosed DNA, high association with proteins (histones) If cell wall is present then it is a simple structureDivide by mitosis
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Monomorphic
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Only one shape for a prokaryote
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Pleomorphic
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More than one shape for a prokaryote
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Streptococcus
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Chains |
Staphylococcus
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Large clusters |
Vibrio
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Short curve |
Spirillum
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HelicalUse flagella to move |
Spirochete
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Twists to moveNO flagella |
Glycocalyx
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Sugar CoatCapsules and slime layers (loose)Functions: attachment and protection
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Flagella
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Composed of three parts: filament, hook, and basal body |
Filament
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Made of protein called flagellin wrapped like a hollow rope
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Hook
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Attached to the filament and basal bodywhat rotates the flagella
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Basal body
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Anchors to the cell wall/membrane
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Taxis
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The movement towards a stimulus
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