Answer Happy

Question 1
Bacteria were grown in lactose and glucose, under these
conditions, what do you expect the expression level of
beta-galactosidase to be?
a high level of expression
a low level of expression
Question 2
Bacteria were grown in galactose as the only sugar
source, under these conditions, what do you expect the
expression level of beta-galactosidase to be?
high levels of beta-galactosidase
low levels of beta-galatosidase
Question 3
If a mutation occurred in the promoter for the
lacI repressor gene so that it can no longer be
bound by RNA polymerase, what do you think the expression level of
beta-galactosidase would be if the bacteria were grown in
galactose as the only sugar source?
high levels of beta-galactosidase
low levels of beta-galactosidase