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  • Question
  • Which of the following enzyme is used for synthesis of RNA under the direction of DNA?


  • Options
  • A. RNA polymerase
  • B. DNA ligase
  • C. DNA polymerase
  • D. RNA ligase

  • Correct Answer
  • RNA polymerase 


  • Transcription problems


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    • 1. Which of the following proteins first binds to TATA box during transcription?

    • Options
    • A. TF II A
    • B. TF II D
    • C. TF II B
    • D. RNA polymerase
    • Discuss
    • 2. The components found in all prokaryotic transcription terminators is

    • Options
    • A. a poly-U region
    • B. Rho factor
    • C. a hairpin structure
    • D. none of these
    • Discuss
    • 3. Which of the following component of RNA polymerase facilitates the recognition of promoter sequences?

    • Options
    • A. a subunit
    • B. b subunit
    • C. s subunit
    • D. c subunit
    • Discuss
    • 4. Recognition/binding site of RNA polymerase is called

    • Options
    • A. receptor
    • B. promoter
    • C. facilitator
    • D. terminator
    • Discuss
    • 5. Which eukaryotic RNA polymerase makes tRNA's?

    • Options
    • A. RNA polymerase 1
    • B. RNA polymerase 2
    • C. RNA polymerase 3
    • D. Any of these
    • Discuss
    • 6. An mRNA transcript of a gene contains

    • Options
    • A. a start codon
    • B. a stop codon
    • C. a terminator
    • D. all of these
    • Discuss
    • 7. Which of the following is a product of transcription?

    • Options
    • A. mRNA
    • B. tRNA
    • C. rRNA
    • D. all of these
    • Discuss
    • 8. A level of regulation, demonstrated by the termination of transcription if tryptophan is abundant, by the tryptophan operon in E.coli cells is called

    • Options
    • A. activation
    • B. attenuation
    • C. corepression
    • D. desiccation
    • Discuss
    • 9. Which of the following statement defines a replicon?

    • Options
    • A. A DNA molecule that encodes pili for conjugation
    • B. A DNA molecule that is able to replicate and be maintained
    • C. A DNA template which is used in transcription
    • D. The enzyme responsible for transposition
    • Discuss
    • 10. What is the usual sequence of a Pribnow box?

    • Options
    • A. AUAUA
    • B. TATAAT
    • C. UUUUU
    • D. TTGACA
    • Discuss


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