Protein Biosynthesis Quiz
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Questions and Answers

Which part of the cell is responsible for transcribing DNA into mRNA?

  • Nucleus (correct)
  • Ribosome
  • Mitochondria
  • Cytoplasm

    • What is the function of mRNA in protein biosynthesis?

  • Transcribed into DNA
  • Exported to the cytoplasm
  • Forms the three-dimensional structure of proteins
  • Translated into amino acids (correct)

    • What distinguishes the 20 common amino acids?

  • Protonation of the amino acid nitrogen
  • Asymmetric center
  • Side chains known as R-groups (correct)
  • Amino group attached to the carboxylic acid

    • At neutral pH, what is the state of the amino acid nitrogen and the carboxylic acid?

    <p>Nitrogen is protonated and carboxylic acid is deprotonated</p> Signup and view all the answers

    What is the biological form of the α-carbon when the R-group is not a hydrogen atom?

    <p>Asymmetric center</p> Signup and view all the answers

    Which part of the cell is responsible for translating mRNA into a linear sequence of amino acids?

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

    What is the term used to describe the side chains that distinguish the 20 common amino acids?

    <p>R-groups</p> Signup and view all the answers

    What is the term used to describe the α-carbon when the R-group is not a hydrogen atom?

    <p>Asymmetric center</p> Signup and view all the answers

    What is the biological form of the α-amino acid?

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

    What happens to the amino acid nitrogen and the carboxylic acid at neutral pH (~7)?

    <p>Amino acid nitrogen is protonated, carboxylic acid is deprotonated</p> Signup and view all the answers

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