A. coding sequence B.promoter C. repressor D. operator sequence E. inducer 33.____ turns off the lactose operon when glucose is abundant or lactose is absent 34.____ turns on the lactose operon by binding the repressor 35.____ sequence for binding of RNA polymerase 36.____Structural genes for lactose utilization 37.____sequence that binds the repressor

A. Leader sequence B. Promoter sequence C. Termination sequence D. Coding sequence E. DNA template 20. ___ site where RNA polymerase first binds during transcription 21. ___ sequence that RNA polymerase transcribes 22.___ sequence that contains the genetic information for a protein

Regulation of bacterial operons by inducers, e.g. lactose, exhibits which of the following properties?(1) Inducer binds to the repressor and __________(2) Inducer effect on RNA polymerase binding to the promoter: ___________(3) Repressor produced by:Select one:A.(1) Activates the repressor, (2) Enhances, (3) A separate geneB.(1) Inhibits the repressor, (2) No effect, (3) A separate geneC.(1) Inhibits the repressor, (2) Inhibits, (3) Genes of the operonD.(1) Activates the repressor, (2) Inhibits, (3) A separate geneE.(1) Activates the repressor, (2) Enhances, (3) Genes of the operon

3. The lac operon is an example of a(n)a) constitutive geneC) repressed geneb) induced gened) two of the above

4. What molecule serves as an inducer of the lac operon?a) Lactosec) Allolactoseb)e) laclGlucosed) Galactose

A bacterial __________ sequence is the non-transcribed region of the DNA to which RNA polymerase binds in order to initiate transcription. A. leader B. promoter C. operon D. operator