Summary: Bacteria, Cocci
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1.1 Study the definition of bacteria; morphology, binary fission, gram positive and negative
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What year the Hans Christian grams did the gram staining
1888 -
prokaryotic organismsNo true nucleus (nucleoid)divide by binary fission
Bacteria -
Binary fission (P, R, S, C)
- parent cell
- replication of DNA
- segregation of DNA
- Cell splitting into two
- parent cell
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BACILLI: short, resembling elongated cocci
Coccobacilli -
bacilli: curved or c-shaped bacilli
Vibrio -
cocci: "in clusters" like grapesgive the example:
Staphylococci
ex: Staphylococcus aureus - causes skin infection -
cocci: packets of eightgive the example:
Octads ex: sarcoma lutea - conatain slime layer, infections in stomach ulcer -
Bacilli: rod shaped in chains
Streptobacilli
ex: Bacillus subtilis - common laboratory contaminant -
Bacilli: rod shaped in pairsgive the example
Diplobacilli
ex: Mycobacterium tuberculosis - Tuberculosis -
Bacilli: V shape, in pairs
snapping diplobacilli
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