Protein Structure and Amino Acids
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Questions and Answers

What is the primary feature of an 𝖺-helix structure in proteins?

  • Hydrogen bonding between the 1st and 4th peptide bonds (correct)
  • Ionic bonding between charged R groups
  • Hydrogen bonding between polypeptide chains
  • Hydrophobic interaction between non-polar side chains
  • What type of bonds are involved in the quaternary structure of proteins?

  • Disulfide bonds between cysteine residues
  • Peptide bonds between amino acids
  • Covalent bonds between R groups and the polypeptide backbone
  • Non-covalent interactions such as H, ionic and hydrophobic interactions (correct)
  • What is the defining characteristic of conjugated proteins?

  • They are composed of multiple polypeptide chains
  • They contain only amino acids
  • They are involved in connective tissue
  • They contain amino acids and other organic or inorganic components (correct)
  • What is the primary consequence of hypervitaminosis D?

    <p>Hypercalcemia leading to kidney stones</p> Signup and view all the answers

    What is the primary source of essential minerals for most people?

    <p>A mixed diet</p> Signup and view all the answers

    𝛽-sheets are a type of secondary structure found in keratin of hair and nails.

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

    The quaternary structure of proteins is determined by covalent bonds.

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

    Collagen is a globular protein with quaternary structure.

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

    All vitamins can be synthesized by the body.

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

    Hypervitaminosis can occur by feeding.

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

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