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Introduction to Translation quiz

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  • How many binding sites for tRNA are found on a ribosome?
    There are three binding sites for tRNA on a ribosome: the A site, the P site, and the E site.
  • What happens to tRNA at the E site of a ribosome?
    At the E site, the tRNA is discharged and exits the ribosome after transferring its amino acid to the growing polypeptide chain.
  • At which site do new aminoacyl tRNAs enter the ribosome during elongation?
    New aminoacyl tRNAs enter the ribosome at the A site during elongation.
  • Which binding site on a ribosome holds a tRNA attached to a growing polypeptide chain?
    The P site on a ribosome holds a tRNA attached to the growing polypeptide chain.
  • Where would one find an uncharged tRNA molecule in a ribosome?
    An uncharged tRNA molecule would be found at the E site of a ribosome.
  • Which region of a tRNA molecule binds to amino acids?
    The amino acid attachment site on a tRNA molecule binds to amino acids.
  • What are the tRNA binding sites on ribosomes?
    D) All of the above
  • What are the names of the three sites where tRNA molecules bind to the ribosome?
    The three sites are the A site, the P site, and the E site.
  • Which molecule transfers amino acids present in the cytoplasm to the ribosomes?
    B) tRNA
  • At which site does the charged initiator tRNA bind during protein synthesis?
    The charged initiator tRNA binds at the P site during protein synthesis.
  • What are the true characteristics of the tRNA structure?
    D) All of the above
  • What is translated in the rough ER?
    C) Proteins
  • What site does the initiator tRNA bind to on the ribosome?
    The initiator tRNA binds to the P site on the ribosome.
  • When the tRNA releases its amino acid, what happens next?
    When the tRNA releases its amino acid, it becomes uncharged and exits the ribosome through the E site.