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Steps of Translation quiz

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  • What are the three main steps of translation in molecular biology?
    The three main steps are initiation, elongation, and termination.
  • During initiation, which ribosomal subunit binds to the mRNA first?
    The small ribosomal subunit binds to the mRNA first during initiation.
  • What is the start codon for translation and which amino acid does it specify?
    The start codon is AUG, and it specifies the amino acid methionine (MET).
  • What role do initiation factors play in translation?
    Initiation factors are proteins that help assemble the translation initiation complex and require energy.
  • In which direction does the ribosome read the mRNA during elongation?
    The ribosome reads the mRNA from the 5' end to the 3' end.
  • What is the function of tRNA during translation?
    tRNA brings specific amino acids to the ribosome by matching its anticodon to the mRNA codon.
  • Where do new charged tRNAs enter the ribosome during elongation?
    New charged tRNAs enter the ribosome at the A site.
  • What type of bond forms between amino acids during elongation?
    A peptide bond, which is a covalent bond, forms between amino acids.
  • Through which site do discharged tRNAs exit the ribosome?
    Discharged tRNAs exit the ribosome through the E site.
  • How does the polypeptide chain grow during elongation?
    The polypeptide chain grows from the N terminus to the C terminus as amino acids are added.
  • What triggers the termination of translation?
    Termination is triggered when a stop codon enters the ribosome's A site.
  • What binds to the stop codon during termination instead of a tRNA?
    A release factor protein binds to the stop codon during termination.
  • What happens to the polypeptide chain during termination?
    The polypeptide chain is cleaved from the tRNA and released.
  • What happens to the translation complex after termination?
    The translation complex disassembles, with the ribosomal subunits and mRNA separating.
  • What is the overall result of the translation process?
    The overall result is the synthesis of a polypeptide chain, which will fold into a functional protein.