Translation Process and Genetic Code Quiz
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Questions and Answers

What is the role of release factor (RF) proteins during translation termination?

  • Recognize the stop codon and cleave the polypeptide from the final tRNA (correct)
  • Form the initiation complex
  • Help in peptide bond formation
  • Recognize the start codon
  • Which antibiotics selectively inhibit bacterial translation by interacting with ribosomes?

  • Tetracycline
  • Penicillin
  • Cycloheximide
  • Streptomycin (correct)
  • What is the function of Shine-Dalgarno sequence in prokaryotic mRNA?

  • Interact with 30S subunit (correct)
  • Interact with 60S subunit
  • Recognize the stop codon
  • Facilitate peptide bond formation
  • What is the primary role of peptidyl transferase activity of 23S rRNA during translation?

    <p>Hold the growing peptide chain and form peptide bonds</p> Signup and view all the answers

    Which antibiotics inhibit elongation during translation?

    <p>Chloramphenicol</p> Signup and view all the answers

    What is the function of stop codons UGA and UAG in protein synthesis?

    <p>Code for amino acids Selenocysteine and Pyrrolysine</p> Signup and view all the answers

    What is the role of the start codon in translation?

    <p>Marks the beginning point of translation</p> Signup and view all the answers

    How many different tRNAs are specifically related to both a codon and an amino acid?

    <p>60</p> Signup and view all the answers

    What does the term 'codon degeneracy' refer to in the context of the genetic code?

    <p>The ability of certain codons to match with multiple amino acids</p> Signup and view all the answers

    Why is the open reading frame (ORF) important in RNA translation?

    <p>It ensures accurate reading of three-nucleotide codons</p> Signup and view all the answers

    Which nucleotide sequence is critical for breaking RNA into readable triplet codes?

    <p>ORF</p> Signup and view all the answers

    What is the function of stop codons in the genetic code?

    <p>Indicate the end of translation</p> Signup and view all the answers

    What is the main function of a Pribnow box in transcription process?

    <p>Initiating transcription</p> Signup and view all the answers

    In transcription termination, what is the role of intrinsic terminators?

    <p>Forming stem-loop structures in RNA</p> Signup and view all the answers

    What is the main difference between intrinsic terminators and Rho-dependent terminators?

    <p>The involvement of Rho protein</p> Signup and view all the answers

    What does an operon primarily regulate in gene expression?

    <p>mRNA transcription</p> Signup and view all the answers

    What is the purpose of a P site during translation in protein synthesis?

    <p>Elongating the polypeptide chain</p> Signup and view all the answers

    Which of the following correctly represents a stop codon in the genetic code?

    <p>UAA</p> Signup and view all the answers

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