Amino Acid Structures and Properties Quiz
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Questions and Answers

What type of amino acids are found in proteins?

  • b-amino acids
  • c-amino acids
  • a-amino acids (correct)
  • d-amino acids

    • What functional groups does an amino acid contain?

  • Aldehyde group and ketone group
  • Hydroxyl group and carbonyl group
  • Ester group and ether group
  • Amino (!NH2) group and carboxyl (!COOH) group (correct)

    • Where are the amino group and carboxyl group attached in an a-amino acid?

  • To the b-carbon atom
  • To the c-carbon atom
  • To the a-carbon atom (correct)
  • To the d-carbon atom

    • What percentage of a cell's overall mass do proteins account for?

    <p>15%</p> Signup and view all the answers

    What is the average nitrogen content of proteins by mass?

    <p>15%</p> Signup and view all the answers

    Which element is found in proteins but not in carbohydrates and lipids?

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

    Which element is an essential constituent of certain specialized proteins?

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

    Which protein is the main protein of milk and contains phosphorus?

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

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