Bacterai Flashcards
(6 cards)
what is it Genetic transformation
when ahost organism takes in foreign DNA and expresses the foreing gene
Describe E.coli
Most common bacteria in intestines, extensively studied and important research organism.
Reproduce rapidly
some contain plasmid, small Dna molecule, that carry genes for specialized functions and resistance to certain drugs.
what is plasmid
circular pieces of DNA that exist outside bacterial chromosome and carry their own genes for specialized functions.
means that introduce foreing DNA into bacteria cell.
Dont merge with chromosome
why is sterile so importnat
so that you dont fall sick or make your work sick
what is purpose of CaCl
2
to weaken cell wall, so plasmid can travel
what is purpose of heat of shock
to make ampR plasmids travel easily through bacteria cell wall and membrane.
