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5 Written Questions

5 Matching Questions

  1. equilibrium
  2. plasmolysis
  3. cytolysis
  4. turgor pressure
  5. carrier protein
  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 in biology, a state that exists when the concentration of a substance is the same throughout a space.
  3. c a protein that transports substances across a cell membrane.
  4. d the bursting of a cell.
  5. e the contraction or shrinking of the cell membrane of a plant cell in a hypertonic solution in response to the loss of water by osmosis.

5 Multiple Choice Questions

  1. in protists, an organelle that accumulates water and then releases it periodically to maintain osmotic pressure.
  2. describes a solution whose concentration is equal to the solute concentration inside a cell.
  3. the process by which a cell engulfs large particles or whole cells, either as a defense mechanism or as a means to obtain food.
  4. a cell that ingests and destroys (digests) foreign matter or microorganisms.
  5. 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 True/False Questions

  1. hypertonicdescribes a solution whose solute concentration is lower than the solute concentration inside a cell.


  2. ion channela 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.


  3. osmosisthe bursting of a cell.


  4. sodium-potassium pumpthe diffusion of water or another solvent from a more dilute solution (of a solute) to a more concentrated (of the solute) through a membrane that is permeable to the solvent.


  5. facilitated diffusionthe movement of particles from regions of higher density to regions of lower density.


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