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What is the driving force for the sodium-potassium pump?

  • ATP hydrolysis (correct)
  • An electrical gradient
  • A concentration gradient
  • A hydrostatic pressure gradient
  • Which of the following describes the movement of ions by the sodium-potassium pump?

  • Both sodium and potassium are moved out of the cell
  • Potassium is moved into the cell
  • Sodium is moved into the cell
  • Potassium is moved out of the cell and sodium is moved into the cell (correct)
  • Which type of transport is supplied by glucose carriers?

  • Facilitated diffusion (correct)
  • Active transport
  • Endocytosis
  • Coupled transport
  • Which of the following can be true of both active transport and facilitated diffusion?

    <p>Lipid-insoluble solutes are transported across the membrane by a carrier protein</p> Signup and view all the answers

    What describes the concentration of ions when the cell is at rest?

    <p>The concentration of potassium is higher inside the cell</p> Signup and view all the answers

    Which solute would diffuse the fastest across a membrane?

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

    Which factor does NOT influence the rate of simple diffusion across a membrane?

    <p>Potential energy of the solute</p> Signup and view all the answers

    Which transport mechanism was used for solutes through the dialysis membrane?

    <p>Simple diffusion</p> Signup and view all the answers

    Through which membranes would sodium chloride diffuse?

    <p>50 MWCO, 100 MWCO, and 200 MWCO</p> Signup and view all the answers

    Which process is NOT considered passive transport?

    <p>Vesicular transport</p> Signup and view all the answers

    When solutes are evenly distributed throughout a solution, the solution is said to have reached what state?

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

    Which statement about plasma membrane characteristics is NOT true?

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

    What occurs to facilitated diffusion when protein carriers become saturated?

    <p>The maximum rate of transport will occur</p> Signup and view all the answers

    Which statement about facilitated diffusion is FALSE?

    <p>The solute moves against its concentration gradient.</p> Signup and view all the answers

    Which reason would NOT require facilitated diffusion for a solute?

    <p>The solute can move freely through the membrane.</p> Signup and view all the answers

    What would increase the rate of facilitated diffusion?

    <p>Increasing the steepness of the concentration gradient.</p> Signup and view all the answers

    Which substance is NOT capable of generating osmotic pressure?

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

    What condition would result in NO change in osmotic pressure across a membrane?

    <p>The concentration of solutes is the same on both sides of the membrane.</p> Signup and view all the answers

    If a cell with an intracellular concentration of 10 mM is placed in a 20 mM solution, which statement is true?

    <p>The net movement of water is out of the cell.</p> Signup and view all the answers

    Which statement about osmosis is FALSE?

    <p>Osmosis requires energy input.</p> Signup and view all the answers

    What is indicated by a hypertonic solution?

    <p>It has a higher solute concentration than the cell.</p> Signup and view all the answers

    What happens when a membrane is impermeable to solutes?

    <p>Osmosis will not occur.</p> Signup and view all the answers

    Osmotic pressure is typically measured in which of the following units?

    <p>mm Hg</p> Signup and view all the answers

    Which factor is NOT required for the process of filtration?

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

    What determines whether a solute appears in the filtrate?

    <p>The molecular weight and size of the solute as well as the MWCO and pore size of the membrane.</p> Signup and view all the answers

    What results from increasing pressure above the beaker in a filtration setup?

    <p>Both increasing the pore size and increasing the pressure above the beaker are correct.</p> Signup and view all the answers

    Which of the following was NOT observed during the filtration activity with the 200 MWCO membrane?

    <p>Glucose filtered easily through the membrane.</p> Signup and view all the answers

    An example of filtration occurs in the kidneys when:

    <p>Ions and glucose filter from the capillary into the kidney tubule.</p> Signup and view all the answers

    The sodium-potassium pump primarily transports:

    <p>Sodium ions out of and potassium ions into the cell.</p> Signup and view all the answers

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