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Bacterial Cytoplasm (plasmids (extrachromosomal DNA (found in prokaryotes,…
Bacterial Cytoplasm
plasmids
extrachromosomal DNA
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small,closed circular DNA
exist,replicate independently of chromosome
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classification 
nucleoid類核體
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1 closed circular,double-strand DNA
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external structures
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introduction
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protection,surface attachment, horizontal gene transfer, movement
motility
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flagellar
順時針向前
逆時針向後
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spirochete
flagella from axial fibril, winding around cell
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cytoskeleton
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major functions:
cell division,protein localization,cell shape determination
inclusions
function
storage
nutrients,metabolic end products,energy
ex. glycogen,carbon,amino,polyphosphate,sulfur
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