1
A) activators B) RNA polymerase C) translation D) assembly of transcription factors 2
A) changing B) ignoring change C) remaining constant D) changing the environment 3
A) homeodomain motif B) zinc finger motif C) leucine zipper motif D) universal motif 4
A) Cyclic-AMP binds to the CAP protein. B) The protein changes shape. C) Space is increased by the binding of tryptophan. D) Helix-turn-helix motifs are enabled to bind to the DNA. 5
A) activator B) RNA C) enhancer D) silencer 6
A) proteins located adjacent to promoters B) distant sites where regulatory proteins bind C) expediters of RNA polymerase capture D) proteins that bind with repressors, deactivating them E) a bacterial form of promoters 7
A) trp repressor B) trp operon C) trp promoter D) trp operator E) trp polymerase 8
A) a leucine zipper B) the operon C) zinc fingers D) the histine E) a helix-turn-helix motif 9
A) ATAT B) AATT C) TTAA D) TAAT E) TATA 10
A) trp operon B) trp promoter C) trp operator D) trp repressor E) trp polymerase 11
A) activators are inhibited by the configuration B) of inhibition of RNA polymerase C) of histones positioned over promoters D) nucleosomes are especially vulnerable to repressors E) operators are placed in an inaccessible position 12
A) beta sheets B) helical clusters C) zinc atoms D) gamma helices E) an alpha helix 13
A) binding with the poly-A tail B) resetting the reading frame C) reinserting introns into the transcript D) excising a short sequence of nucleotides 14
A) once B) only twice C) up to 10 times D) over a hundred times E) not at all 15
A) leucine B) protein C) RNA D) polymerase E) histone 16
A) the transcription factor complex B) RNA polymerase C) repressors D) the regulatory factor complex E) the DNA binding domain 17
A) only one gene B) two genes C) three genes D) four genes E) five genes 18
A) activator B) regulator C) promoter D) operator E) repressor 19
A) RNA polymerase binds to the operator B) the repressor cannot bind to the promoter C) an isomer of lactose binds to the repressor D) CAP does not bind to the operator E) of the absence of cAMP 20
A) interfering with DNA transcription by blocking base pairing between cytosine and guanine B) complexing with enhancers to prevent transcription C) prevention of mutation D) insuring that genes that are turned off, stay off E) irrelevant to gene transcription 21
A) homeotic switches B) zinc fingers C) operator D) recognition helix E) protein link 22
A) translational control B) transcriptional control C) post-transcriptional control D) post-translational control E) control of passage from the nucleus 23
A) alternating promoters and operators B) placing promoters on both sides of each gene C) the use of very long promoters D) distant sites in a chromosome controlling transcription of a gene E) having factors on one chromosome control genes on another gene 24
A) cAMP B) CAP C) lactase D) glu operons E) tRNA 25
A) cAMP B) DNA C) lac operon D) operator E) repressor 26
A) repressor B) activator protein C) operator D) promotor E) structural gene 27
A) after B) within C) before 28
A) True B) False 29
A) operons B) activators C) repressors D) enhancers E) promoters 30
A) structural genes B) an operator C) a promoter D) a CAP binding site E) all of the above 31
A) exon splicing-occurs in nucleus B) post-translational modifications-phosphorylation C) snRNA-splice out exons from transcript D) activated enhancers-trigger transcription E) all are matched correctly 32
A) True B) False
2002 McGraw-Hill Higher Education