GENE REGULATION PART 1 Online version PART 1 OF 2 by munirah mihat 1 The "on/off" switch for an operon is called the a promoter b repressor c operator d gene 2 what does a promoter do? a it allows a gene to be transcribed b it creates a DNA segment c it is another word for ribosomes d it is another word for RNA 3 what is an operon? a a part of a ribsome b a unit made up of linked genes that code for proteins needed to do a specific task c a part of a RNA d needed for DNA replication 4 An operon consists of all the the following EXCEPT a operator b promoter c regulatory gene d genes of the operon 5 A protein that binds to the operator and blocks the RNA polymerase a regulator b repressor c activator d corepressor