Ribosomes and Translation
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Questions and Answers

Which of the following is responsible for the recognition and degradation of polyubiquitinated proteins?

  • Lysosome
  • Proteolytic cleavage
  • Proteasome (correct)
  • Protein caps
  • Which of the following covalent modifications is involved in the targeting of proteins to membranes?

  • Phosphorylation
  • Disulfide bond formation
  • Farnesylation (correct)
  • Glycosylation
  • Which type of phosphorylation has the most important effects on proteins?

  • Serine phosphorylation
  • Tyrosine phosphorylation (correct)
  • Threonine phosphorylation
  • All three have equal effects
  • Which of the following correctly describes the process of translation in protein synthesis?

    <p>The sequence of bases in mRNA determines the sequence of amino acids in the translated protein</p> Signup and view all the answers

    What are the basic requirements for translation to occur?

    <p>Template RNA, ribosome, and aminoacyl-tRNA</p> Signup and view all the answers

    What is the function of the genetic code?

    <p>To determine the sequence of amino acids in proteins</p> Signup and view all the answers

    Which of the following is NOT a component of the ribosome?

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

    What is the function of the A site in the ribosome?

    <p>Binds incoming aminoacyl tRNA</p> Signup and view all the answers

    Which of the following is NOT required for the initiation of translation?

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

    What occurs during the termination of translation?

    <p>Recognition of the stop codon</p> Signup and view all the answers

    Which of the following is true about the genetic code?

    <p>The genetic code is read from a fixed starting point.</p> Signup and view all the answers

    What is the function of transfer RNA (tRNA)?

    <p>To act as an adaptor molecule in protein synthesis.</p> Signup and view all the answers

    What is the significance of the 'wobble' position in a codon?

    <p>It allows flexibility and efficiency in the use of tRNA.</p> Signup and view all the answers

    What is the role of ribosomes in protein synthesis?

    <p>To serve as the factories for protein synthesis.</p> Signup and view all the answers

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