How much do you know about initiator tRNA and protein synthesis?
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Questions and Answers

What is the function of initiator tRNA?

  • To activate amino acids
  • To deliver internal methionine residues
  • To transport the first amino acid of all proteins (correct)
  • To connect amino acids in a specific sequence

    • Why is peptide bond formation not feasible under normal physiological conditions?

  • Because it requires reading of the genetic codon
  • Because it requires elongator tRNA
  • Because it requires activation of amino acids (correct)
  • Because it requires initiator tRNA

    • What is the difference between initiator tRNA and elongator tRNA?

  • They read different genetic codons
  • They transport different amino acids
  • They have different structures (correct)
  • They activate amino acids differently

    • What is the role of elongator tRNA?

    <p>To deliver internal methionine residues</p> Signup and view all the answers

    What is the significance of the first amino acid of all proteins being methionine?

    <p>It is transported by a unique tRNA</p> Signup and view all the answers

    Why can't amino acids be connected in a specific sequence without tRNA?

    <p>It would not allow for a variety of proteins</p> Signup and view all the answers

    What is the function of tRNA?

    <p>To transport amino acids</p> Signup and view all the answers

    Which type of tRNA is responsible for delivering internal methionine residues?

    <p>Elongator tRNA</p> Signup and view all the answers

    What is the unique characteristic of initiator tRNA?

    <p>It transports the first amino acid of all proteins</p> Signup and view all the answers

    Why is activation of amino acids necessary for peptide bond formation?

    <p>Because under normal physiological conditions peptide bond formation is not thermodynamically feasible</p> Signup and view all the answers

    What is the function of initiator tRNA?

    <p>To transport the first amino acid of all proteins</p> Signup and view all the answers

    Why is peptide bond formation not feasible under normal physiological conditions?

    <p>Because it requires activation of amino acids</p> Signup and view all the answers

    What is the difference between initiator tRNA and elongator tRNA?

    <p>They have different structures</p> Signup and view all the answers

    What is the role of elongator tRNA?

    <p>To deliver internal methionine residues</p> Signup and view all the answers

    What is the significance of the first amino acid of all proteins being methionine?

    <p>It is transported by a unique tRNA</p> Signup and view all the answers

    Why can't amino acids be connected in a specific sequence without tRNA?

    <p>It would not allow for a variety of proteins</p> Signup and view all the answers

    What is the function of tRNA?

    <p>To transport amino acids</p> Signup and view all the answers

    Which type of tRNA is responsible for delivering internal methionine residues?

    <p>Elongator tRNA</p> Signup and view all the answers

    What is the unique characteristic of initiator tRNA?

    <p>It transports the first amino acid of all proteins</p> Signup and view all the answers

    Why is activation of amino acids necessary for peptide bond formation?

    <p>Because under normal physiological conditions peptide bond formation is not thermodynamically feasible</p> Signup and view all the answers

    Why is tRNA needed to transport an amino acid?

    <p>To activate the amino acid</p> Signup and view all the answers

    What is the first amino acid of all proteins?

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

    What is the difference between initiator tRNA and elongator tRNA?

    <p>Initiator tRNA is used for the first amino acid of all proteins, while elongator tRNA is used for internal met residues</p> Signup and view all the answers

    What is the role of elongator tRNA?

    <p>To deliver internal met residues</p> Signup and view all the answers

    Why can't amino acids be connected in a specific sequence without tRNA?

    <p>Because peptide bond formation is not thermodynamically feasible</p> Signup and view all the answers

    What is the unique tRNA that transports methionine called?

    <p>Initiator tRNA</p> Signup and view all the answers

    What is the first amino acid of all proteins?

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

    What is the role of tRNA in protein synthesis?

    <p>All of the above</p> Signup and view all the answers

    What is the difference between initiator tRNA and elongator tRNA?

    <p>Initiator tRNA is used for the first amino acid of all proteins, while elongator tRNA is used for internal met residues</p> Signup and view all the answers

    What is the function of the initiator tRNA?

    <p>To transport the first amino acid of all proteins</p> Signup and view all the answers

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