An enzyme produced in response to the presence of a substrate is called a(n)Group of answer choicesinducible enzyme.repressible enzyme.restriction enzyme.operator.promoter.

According to the operon model, for the synthesis of an inducible enzyme to occur, theGroup of answer choicesend-product must not be in excess.substrate must bind to the enzyme.substrate must bind to the repressor.repressor must bind to the operator.repressor must not be synthesized.

An operon that is transcribed in response to the presence of a substrate is called a(n) _______.ANSWERconstitutive operonrepressible operoninducible operonpromoter

In genetic engineering, restriction enzymes cleave the DNA at a specific site known as _____a) restrictionb) recognitionc) promoterd) sense

The reactant on which an enzyme works.Group of answer choicescofactorcoenzymesubstratecatalystactive site

A substance that reduces the activity of an enzyme by entering the active site in place of the substrate, whose structure it mimics.Group of answer choicesnoncompetitive inhibitorcompetitive inhibitor