The lactose analog isopropyl-beta-D-thio-galactoside (IPTG)is often used to regulate gene expression systems in bacteria.IPTG does not act as a substrate for beta-galactosidase,but can bind to,and inactivate,the repressor.In this case,IPTG serves as a(n)
A)inducer.
B)repressor.
C)DNA-binding protein.
D)operon.

Question

Quizplus · Accepted Answer

IPTG is serving as an inducer in this case by binding to and inactivating the repressor, allowing for gene expression to occur.

The Lactose Analog Isopropyl-Beta-D-Thio-Galactoside (IPTG)is Often Used to Regulate Gene