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5 Written Questions

5 Matching Questions

  1. cytolysis
  2. sodium-potassium pump
  3. turgor pressure
  4. contractile vacuole
  5. hypotonic
  1. a the pressure that is exerted on the inside of cell walls and that is caused by the movement of water into the cell.
  2. b a carrier protein that uses ATP to actively transport sodium ions out of a cell and potassium ions into the cell.
  3. c the bursting of a cell.
  4. d describes a solution whose solute concentration is lower than the solute concentration inside a cell.
  5. e in protists, an organelle that accumulates water and then releases it periodically to maintain osmotic pressure.

5 Multiple Choice Questions

  1. the process by which a cell membranes surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell.
  2. a method of active transport across the cell membrane in which the cell takes in extracellular fluids.
  3. the transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins.
  4. the process by which a substance is released from the cell through a vesicle that transports the substance to the cell surface and then fuses with the membrane to let the substance out.
  5. a small cavity or sac that contains materials in a eukaryotic cell; forms when part of the cell membrane surrounds the materials to be taken into the cell or transported within the cell.

5 True/False Questions

  1. phagocytosisthe process by which a cell engulfs large particles or whole cells, either as a defense mechanism or as a means to obtain food.

          

  2. isotonicdescribes a solution whose concentration is equal to the solute concentration inside a cell.

          

  3. concentration gradienta difference in the concentration of a substance across a distance.

          

  4. diffusionthe movement of particles from regions of higher density to regions of lower density.

          

  5. equilibriumthe bursting of a cell.

          

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