Semipermeable Membranes Quiz
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Questions and Answers

What is the property of membranes that allow only solvent molecules to pass through?

  • Impermeability
  • Semipermeability (correct)
  • Porosity
  • Permeability
  • What is the process called when solvent molecules flow from pure solvent to a solution through a semipermeable membrane?

  • Filtration
  • Evaporation
  • Osmosis (correct)
  • Diffusion
  • What stops the flow of solvent molecules across a semipermeable membrane into a solution?

  • Osmotic pressure (correct)
  • Hydrostatic pressure
  • Vapor pressure
  • Atmospheric pressure
  • In which direction do solvent molecules flow across a semipermeable membrane?

    <p>From lower concentration to higher concentration of the solution</p> Signup and view all the answers

    What is the excess pressure needed to prevent osmosis through a semipermeable membrane called?

    <p>Osmotic pressure</p> Signup and view all the answers

    What determines the osmotic pressure of a solution?

    <p>Concentration of the solution</p> Signup and view all the answers

    What does osmotic pressure depend on?

    <p>Number of solute molecules</p> Signup and view all the answers

    In the osmotic pressure equation Π = C R T, what does Π represent?

    <p>Osmotic pressure</p> Signup and view all the answers

    How can the molar mass of a solute be calculated using osmotic pressure?

    <p>By using the equation M2 = Π w RT V</p> Signup and view all the answers

    Which type of solutions have the same osmotic pressure at a given temperature?

    <p>Isotonic solutions</p> Signup and view all the answers

    If a solution is hypotonic, what will happen to cells placed in this solution?

    <p>Cells will swell</p> Signup and view all the answers

    Why is osmotic pressure measurement useful for determining molar masses of biomolecules?

    <p>Biomolecules are unstable at room temperature</p> Signup and view all the answers

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