Eukaryotic RNA polymerase lI synthesizes: (A) 5S rRNA (B) 28S rRNA (C) tRNA (D) A and B (E) mRNA (E) None of the above The bacterial RNA polymerase ternary complex includes: (A) sigma factor, core enzyme, rho factor, RNA, and (B) (C) (D) (E) DNA. sigma factor, core enzyme, RNA, and DNA. sigma factor, core enzyme, and DNA. sigma factor and core enzyme. core enzyme 42. Polycistronic mRNA in eukaryotes encodes several proteins (A) True (B) Falls What is the role of DNA gyrase in transcription? (A) It assists in the formation of termination hairpin Coupled transcription translation is present in (A) Prokaryotes (B) Eukaryotes (C) viruses (D) All of the above (E) A and B 43. (B) (C) (D) (E) structures It melts the DNA duplex to form the transcription bubble It removes the positive supercoils generated ahead of RNA polymerase It breaks the hydrogen bonds between DNA and RNA during transcription It removes the negative supercoils generated 44. TATA-binding box is a common component of promoters behind RNA polymerase (A) RNA polymerases I, Il and III (B) RNA polymerases I and lIl (C) RNA polymerase I (D) RNA polymerase Ill (E) RNA polymerase l What DNA sequence elements define a transcription (A) (B) (C) Promoter, start point and terminator sequence enhancer, promoter and terminator sequence enhancer, start point and terminator
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