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17 Cards in this Set
- Front
- Back
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plasmid
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small circular DNA
-carry 2-3 genes |
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bacteriophage
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-virus infects bacteria
-carry 2-100 genes |
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ori
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site where DNA replication begins in bacDNA
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DNAa
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-assoc with origin and opens DNA
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DnaB
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-increases single strand region
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process of rolling circle DNA replication
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-nick in single strand initiates replication
-free 3' end extended -top strand (5' end) displaced -displaced strand copied |
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topoisomerase
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-targets for quinolone antibiotics
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pathogenicity island
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-groups genes contributing to virulence
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LAC operon: negative control
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-repressor present when glucose present
-when lactose available, binds to repressor and inactivates |
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LAC operon: postive control
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-when glu present cAMP dec
-glu dec, cAMP inc and acts as activator |
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transformation
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-naked DNA enters recipient cell
-integrates into DNA |
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transduction
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-via phage vector
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generalized transduction
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-phage picks up random pieces of host DNA
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specific transduction
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-some neighboring genes to prophage picked up
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conjugation
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-free plasmid moves to new cell via sex (F) pilus
-plasmid promotes transfer genomic DNA |
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transposition
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-transposons containing info
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mechanisms of acquired antibiotic resistance
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-uptake
-alteration of target (mutation) -acquisition of ability to inactivate antibiotic |
