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5 Written questions

5 Matching questions

  1. ion channel
  2. phagocyte
  3. pinocytosis
  4. sodium-potassium pump
  5. plasmolysis
  1. a a complex of protein molecules in a cell membrane that form a pore through which ions can pass.
  2. b a method of active transport across the cell membrane in which the cell takes in extracellular fluids.
  3. c 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.
  4. d a cell that ingests and destroys (digests) foreign matter or microorganisms.
  5. e a carrier protein that uses ATP to actively transport sodium ions out of a cell and potassium ions into the cell.

5 Multiple choice questions

  1. the transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins.
  2. the process by which a cell engulfs large particles or whole cells, either as a defense mechanism or as a means to obtain food.
  3. 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.
  4. the movement of particles from regions of higher density to regions of lower density.
  5. the movement of substances across a cell membrane without the use of energy by the cell.

5 True/False questions

  1. turgor pressurea protein that transports substances across a cell membrane.

          

  2. hypertonicdescribes a solution whose solute concentration is higher than the solute concentration inside a cell.

          

  3. carrier proteindescribes a solution whose solute concentration is higher than the solute concentration inside a cell.

          

  4. hypotonicdescribes a solution whose solute concentration is higher than the solute concentration inside a cell.

          

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

          

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