In E. coli, beta.gif-galactosidase is not made unless

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    lactose is present in the medium.
     glucose is absent, or is present at very low levels, in the medium.
     cyclic AMP is present in the cell at elevated levels.
     all of the above.
     more than one of the above, but not all.
asked May 16, 2012 in Microbiology by anonymous
    

1 Answer

0 votes
all of the above.
answered May 17, 2012 by Bioshare ~Top Expert~ (34,070 points)



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