Amino Acids and Peptides Quiz
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Questions and Answers

What functional group does an amino group contain?

  • Oxygen and two hydrogen atoms
  • Nitrogen and two hydrogen atoms (correct)
  • Carbon and three hydrogen atoms
  • Nitrogen and three hydrogen atoms
  • How many stereoisomers of amino acids are there?

  • Five
  • Three
  • Two (correct)
  • Four
  • Which carbon is the amino group attached to in 𝛼-amino acids?

  • The last carbon in the chain
  • The carbon adjacent to the carboxyl group (correct)
  • The central carbon
  • The first carbon in the chain
  • How many amino acids are found in proteins?

    <p>20</p> Signup and view all the answers

    What gives the identity to an amino acid?

    <p>The side chain group, R</p> Signup and view all the answers

    Study Notes

    Amino Acids

    • An amino group (-NH2) is a functional group that contains nitrogen and hydrogen atoms bonded together.
    • There are 2n possible stereoisomers of amino acids, where n is the number of asymmetric carbon atoms.
    • In 𝛼-amino acids, the amino group is attached to the 𝛼-carbon (first carbon).
    • There are 20 different amino acids that are commonly found in proteins.
    • The identity of an amino acid is determined by its side chain (R group), which varies among different amino acids.

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    Description

    Test your knowledge of biochemistry with this quiz on amino acids and peptides. Explore the structure, properties, ionization, and physiological activity of peptides, including 𝛼-amino acids and peptide bonds. Perfect for students of physical therapy and biochemistry enthusiasts.

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