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14 Cards in this Set
- Front
- Back
define plasmids
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small circular DNA molecules within bacteria
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what are the two types of bacteria
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-prototrophic
-auxotrophic |
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define prototrophic, what is it denoted by
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can grow/divide on minimal media
- denoted by + |
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define auxotrophic, what is it denoted by
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no growth w/o specific energy source (energy source must be supplement to minimal media to allow growth)
-denoted by - |
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what are the two types of mutations in bacteria
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1. no growth w/o specific energy source
2. no ability to utilize a specific source |
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what are the 3 phases of bacterial growth
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1. lag phase
2. log phase 3. stationary phase (nutrients become limiting) |
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what are the 3 types of conjugation
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-F-factor transfer
-Hfr transfer -F ' transfer |
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what is Hfr transfer most known for
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recombination
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what is F ' transfer most known for
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partially diploid (meterozygote)
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what to F factor and F ' have in common that Hfr transfer does not
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changes cell from F- to F+ or F- to F ' while Hfr transfer does not
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what is transformation
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DNA uptake by bacteria
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what is the site of recombination during transformation
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heteroduplex
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what is transduction
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viral vectors
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what are the 3 components of the T4 phage
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head packaged with DNA
tail tail fibers (recognize specific areas of host cell wall) |