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RNA polymerase: Quiz


Question 1: ________ have a single RNAP that is closely related to the three main eukaryotic polymerases.

Question 2: The complete ________ therefore has 6 subunits: α2ββ'σω (~480 kDa).
Enzyme inhibitorProteinCofactor (biochemistry)Enzyme

Question 3: The single-subunit T7 RNA polymerase is related to that found in mitochondria and chloroplasts, and shares considerable homology to ________.
DNA polymerase ITelomeraseDNA polymeraseReverse transcriptase

Question 4: There are other RNA polymerase types in mitochondria and ________.
ChloroplastPlastidCell wallPhotosynthesis

Question 5: Catalytic RNA (________)—enzymatically active RNA molecules
RibozymeProteinDNARNA world hypothesis

Question 6: [8] This is the most studied type, and due to the high level of control required over transcription a range of ________ are required for its binding to promoters.
General transcription factorTranscription factor II DTranscription factorTranscription factor II F

Question 7: [1] By this time the 1959 Nobel Prize in Medicine had been awarded to Severo Ochoa and ________ for the discovery of what was believed to be RNAP,[2] but instead turned out to be polynucleotide phosphorylase.
Marshall Warren NirenbergArthur KornbergDavid BaltimoreJames D. Watson

Question 8: RNA polymerase I synthesizes a pre-________ 45S, which matures into 28S, 18S and 5.8S rRNAs which will form the major RNA sections of the ribosome.
Transfer RNADNANon-coding RNARibosomal RNA

Question 9: RNAP can initiate transcription at specific DNA sequences known as ________.
OperonEnhancer (genetics)Prokaryotic transcriptionPromoter

Question 10: In ________, the same enzyme catalyzes the synthesis of mRNA and ncRNA.
Gram-positive bacteriaBacteriaGram-negative bacteriaCorynebacterium


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