Day24_regulation2 Quiz

Day24_regulation2 Quiz - Question 1 of 9 Anoperon 0.5/ 0.5...

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Question 1 of 9 0.5/ 0.5 Points An operon A. Consists of more than one gene following a single promoter B. Allows all the genes for a pathway to be turned on and off synchronously C. Produces a ‘polycistronic’ mRNA, in which start and stop codons allow for production of multiple proteins D. Only two of the choices are correct E. All of the choices are correct Answer Key: E Question 2 of 9 0.5/ 0.5 Points The operator A. Is a protein binding sequence made of DNA that follows or is at the end of the promoter B. Is a protein binding sequence made of DNA that precedes or is upstream of the promoter C. Is any protein binding sequence on the DNA Answer Key: A Question 3 of 9 0.5/ 0.5 Points The repressor protein
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A. can bind to the DNA at a region called the operator, blocking RNA polymerase and preventing the expression of genes. B. is always active (capable to binding to the DNA) immediately upon being produced at the ribosome. C. is encoded by a gene elsewhere in the DNA, and has its own promoter.
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Day24_regulation2 Quiz - Question 1 of 9 Anoperon 0.5/ 0.5...

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