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5 Written questions

5 Matching questions

  1. equilibrium
  2. passive transport
  3. phagocyte
  4. hypertonic
  5. diffusion
  1. a describes a solution whose solute concentration is higher than the solute concentration inside a cell.
  2. b the movement of particles from regions of higher density to regions of lower density.
  3. c the movement of substances across a cell membrane without the use of energy by the cell.
  4. d a cell that ingests and destroys (digests) foreign matter or microorganisms.
  5. e in biology, a state that exists when the concentration of a substance is the same throughout a space.

5 Multiple choice questions

  1. describes a solution whose solute concentration is lower than the solute concentration inside a cell.
  2. the process by which a cell membranes surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell.
  3. a carrier protein that uses ATP to actively transport sodium ions out of a cell and potassium ions into the cell.
  4. the transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins.
  5. a protein that transports substances across a cell membrane.

5 True/False questions

  1. active transportthe movement of chemical substances, usually across the cell membrane, against a concentration gradient; requires cells to use energy.

          

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

          

  3. isotonicdescribes a solution whose solute concentration is lower than the solute concentration inside a cell.

          

  4. osmosisthe 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. plasmolysisthe contraction or shrinking of the cell membrane of a plant cell in a hypertonic solution in response to the loss of water by osmosis.

          

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