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t68u56r3
it is by lac operon syastem
A lac repressor turns off the lac genes by binding to the operator.
an E. coli B strain, usually used for protein-expression.
The lac operon is switched on so the E. coli can use it as a food source.
My answer is 3, I am pretty sure I am right, but I would double check to make sure. I am in ninth grade taking biology at PineTree.
gene expression occurring at transcription
whenever the Lactose is present the lac genes in E.coli are turn on
Dysentery
food
Enteroinvasive E. Coli
E Coli