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14 Cards in this Set

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