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

question 53

Multiple Choice

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.

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Definitions:

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A treatment approach, based on the principles of operant conditioning, that replaces undesirable behaviors with more desirable ones through positive or negative reinforcement.

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