Transcription, Translation, and Bioinformatics Chapter 8 Review Questions with Verified Answers Latest Update (Graded A+)
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Transcription, Translation, And Bioinformatics
Transcription, Translation, and Bioinformatics Chapter 8 Review Questions with Verified Answers Latest Update (Graded A+)
____________ RNA polymerase plus sigma factor together are called _______________.
a) transcription; translation
b) holoenzyme; core
c) translation; transcription
d) core...
Transcription, Translation, and Bioinformatics Chapter 8 Review Questions with Verified Answers
Latest Update (Graded A+)
____________ RNA polymerase plus sigma factor together are called _______________.
a) transcription; translation
b) holoenzyme; core
c) translation; transcription
d) core; holoenzyme
e) ribosome; rRNA - Answers d) core; holoenzyme
Without ____________, the core RNA polymerase binds and releases DNA at random.
a) initiation factor
b) Shine-Dalgarno sequence
c) sigma factor
d) peptidyltransferase
e) release factor - Answers c) sigma factor
The RpoH sigma-70 factor of E. coli recognizes promoters for:
a) stress response genes
b) motility and chemotaxis genes
c) 'housekeeping' genes
d) heat shock-induced genes
e) genes for nitrogen metabolism - Answers c) 'housekeeping' genes
Which of the following is NOT part of initiation of transcription?
a) -10 and -35 sequences
, b) binding of RNA polymerase to the beginning of the gene
c) melting of the helix
d) binding of sigma factor to promoter followed by binding of core RNA polymerase
e) base pairing of the first nucleotide of the RNA - Answers d) binding of sigma factor to promoter
followed by binding of core RNA polymerase
An enzyme complex called RNA polymerase is also known as DNA-dependent RNA polymerase because:
a) DNA codes for the subunits of the protein
b) DNA serves as a template for translation
c) hydrolysis of DNA provides the energy for RNA polymerase
d) DNA serves as a template for transcription
e) DNA is required as a primer for this polymerase - Answers d) DNA serves as a template for
transcription
A consensus sequence consists of:
a) region to which sigma factors can bind
b) most likely base (or bases) at each position
c) hairpins in RNA to slow down or stop transcription
d) sequences to which ribosomes bind
e) primer sequences used to initiate transcription - Answers b) most likely base (or bases) at each
position
Molecules of sRNA do not encode proteins, but are used to ___________ the translation of specific
mRNAs into proteins.
a) start
b) regulate
c) stop
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