Chemical Bonding and Interactions Quiz
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Questions and Answers

What is the driving force behind hydrophobic interactions?

  • Increasing the enthalpy of water
  • Minimizing the favorable entropy of water (correct)
  • Maximizing the unfavorable entropy of water
  • Increasing the randomness of water
  • In the context of biochemical systems, what does a negative ΔG indicate?

  • Equilibrium in the reaction
  • An increase in entropy
  • Unfavorable and non-spontaneous reaction
  • Favorable and spontaneous reaction (correct)
  • What does the term 'ΔS' represent in the thermodynamic equation ΔG = ΔH – TΔS?

  • Change in entropy or disorder (correct)
  • Change in heat due to bond making and breaking
  • Number of microstates
  • Temperature in Kelvin
  • What type of interaction is characterized by attractive interactions between two fixed charge centers of opposite sign or repulsion between charges of the same sign?

    <p>Ionic interactions</p> Signup and view all the answers

    Which of the following contributes to the specificity in binding between biomolecules?

    <p>Ionic interactions</p> Signup and view all the answers

    What determines the energy of an ionic interaction between two fixed charge centers?

    <p>Dielectric constant</p> Signup and view all the answers

    In biological systems, hydrogen bonds typically occur with which types of atoms?

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

    What type of bond is a covalent bond?

    <p>A bond formed by sharing of electrons</p> Signup and view all the answers

    How many hydrogen bonds does a water molecule typically form?

    <p>3-4</p> Signup and view all the answers

    What leads to the hydrophobic effect?

    <p>Interaction of water with full and partial charges on the surface of proteins</p> Signup and view all the answers

    Which type of bond has the highest bond energy?

    <p>Covalent bond</p> Signup and view all the answers

    What is the typical bond length for F or S bonds?

    <p>2.5 to 3.5 Å</p> Signup and view all the answers

    What is the typical bond energy required to break a hydrogen bond?

    <p>4 to 20 kJ/mol</p> Signup and view all the answers

    What is the main cause of the hydrophobic effect in an aqueous medium?

    <p>Increased entropy of water</p> Signup and view all the answers

    What is the range of bond energy for van der Waals interactions?

    <p>2 to 4 kJ/mol</p> Signup and view all the answers

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