Solved by a verified expert:Question 11Which of the following is NOT involved in transcriptional regulation ?a) the TATA box.b) enhancers. c) the poly-A signal. d) the regulatory promoter. e) the core promoter.Question 12Which of the following is NOT involved in transcriptional termination in eukaryotes (by RNA polymerase II) ?a) involves cleavage of the pre-mRNA.b) depends on a specific sequence of RNA.c) depends on a protein, Rat.d) phosphorylation of RNApol II by helicase e) involves exonuclease activity.Question 13The term “pre-mRNA” or “primary transcript” refers to ____________________.a) prokaryotic mRNA.b) genes at the DNA level, pre-transcription.c) primary tranacripts are new eukaryotic transcriptin need of processing to become a fully mature mRNA.d) new, unprocessed RNA of eukaryotes. e) untranslated upstream regions of mRNA transcripts.Question 15The DNA sequence where RNA polymerase binds at the beginning of transcription is called the ____________________.a) initiator.b) operator.c) The promoter is found at the beginning of a gene. RNA polymerase binds to this sequence and then moves along the DNA strand to synthesize the transcript.d) terminator. e) promoter.Question 1Enhancers, unlike regulatory promoters,a) do not have to be in a specific location with respect to their regulated gene.b) cannot be transcribed. c) do not have to contain specific DNA sequences d) show little sequence conservation across species e) are made of proteinQuestion 5Which of the following would be a grossly unspecific way to regulate eukaryotic genes?a) control of alternative splicing.b) control of transcriptionc) control of mRNA stability d) control of capping. e) control of degradation.Question 7The activity of an enzyme is LEAST likely to be controlled by which of the following?a) translation.b) RNA processing. c) post-translational covalent modification of the protein. d) changes to substrate concentration. e) transcription.Question 9An operon is__________a) the coding sequence in the open reading frame of eukaryotic proteins.b) a non-coding sequence that interrupts the open reading frame of proteins.c) a DNA-binding proteind) a set of genes transcribed as a single unit.Question 10Operons consist of all of the following EXCEPT_________a) a promoter sequence.b) a regulatory protein.c) an operator sequence. d) two or more structural genes.Question 11Regulatory elements are________a) genes that control the expression of other genes.b) minerals that bind enzymes as cofactors, regulating their function.c) structural genes that are regulated. d) sequences that help control transcription.
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