If $r-DNA$ containing the $amp^R$ gene is transferred into $E. coli$ cells,what will the normal $E. coli$ cells be transformed into?

Which of the statements are correct about bioreactors?
$I.$ It provides all the optimal conditions for achieving the desired product by providing optimal growth conditions like temperature, $pH$, substrate, salt, vitamin and oxygen.
$II.$ It is suited for large-scale production of microorganisms under aseptic conditions for a number of days.

What would happen when one grows a recombinant bacterium in a bioreactor but forgets to add antibiotic to the medium in which the recombinant is growing?

It is used to detect $HIV$ in suspected $AIDS$ patient and detect mutations in genes in suspected cancer patient too.

What treatment is given to make a bacterial cell competent to take up $DNA$?

Besides better aeration and mixing properties,what other advantages do stirred tank bioreactors have over shake flasks?