27.Choose the CORRECT statements describing the induction of B-galactosidase activity by isopropylthiogalactoside (IPTG) in E coli.
(A) IPTG stimulates the lac repressor funetion
(B) IPTG induces the transcription of P-galactosidase.
(C) IPTG binds is to the lac represso sor and i inhibits its activity.
(D) IPTG inhibits β-galactosidase degradation.
(E)The binding of lac repressor to the lac operator is suppressed by IPTG.