Biochemistry: Hydrogen Bonds and Biomolecules Quiz
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Questions and Answers

What type of bonds are formed between the hydroxyl group of an alcohol and water?

  • Covalent bonds
  • Hydrogen bonds (correct)
  • Ionic bonds
  • Van der Waals interactions
  • What is the main factor behind protein folding and protein-protein association?

  • The hydrophobic effect (correct)
  • Van der Waals interactions
  • Ionic interactions
  • Hydrogen bonds
  • Why does ice float on water?

  • Ice has a lower entropy than liquid water
  • Ice has a higher density than liquid water
  • Ice forms a regular lattice with low entropy (correct)
  • Ice contains hydrogen bonds that push it up
  • What type of interaction dominates at very short distances in van der Waals interactions?

    <p>Repulsive force</p> Signup and view all the answers

    What is the source of the unique properties of water?

    <p>Hydrogen bonds with non-polar substances</p> Signup and view all the answers

    What is one of the main factors behind the binding of steroid hormones to their receptors?

    <p>The hydrophobic effect driving association</p> Signup and view all the answers

    Which of the following properties primarily depends on the chemical nature of the solute?

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

    What is the primary driving force behind the formation of micelles from lipid molecules in water?

    <p>The hydrophobic effect</p> Signup and view all the answers

    What property of water allows for the dissolution of polar molecules like ammonia and hydrogen sulfide?

    <p>The presence of partial charges (dipoles) in water molecules</p> Signup and view all the answers

    According to the equation $\Pi = iRT(c)$, what factor affects the osmotic pressure of a solution?

    <p>All of the above</p> Signup and view all the answers

    In the context of enzyme binding sites, what property of water contributes to the binding of hydrophobic substrates and ligands?

    <p>The formation of ordered water cages around hydrophobic molecules</p> Signup and view all the answers

    Which of the following statements best describes the role of the hydrophobic effect in drug design?

    <p>Many drugs are designed to take advantage of the hydrophobic effect by incorporating hydrophobic moieties that can bind to hydrophobic sites in targets.</p> Signup and view all the answers

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