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5 Written Questions

5 Matching Questions

  1. endocytosis
  2. isotonic
  3. exocytosis
  4. diffusion
  5. equilibrium
  1. a the movement of particles from regions of higher density to regions of lower density.
  2. b describes a solution whose concentration is equal to the solute concentration inside a cell.
  3. c 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. d the process by which a cell membranes surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell.
  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. a carrier protein that uses ATP to actively transport sodium ions out of a cell and potassium ions into the cell.
  2. the movement of substances across a cell membrane without the use of energy by the cell.
  3. a method of active transport across the cell membrane in which the cell takes in extracellular fluids.
  4. the movement of chemical substances, usually across the cell membrane, against a concentration gradient; requires cells to use energy.
  5. a complex of protein molecules in a cell membrane that form a pore through which ions can pass.

5 True/False Questions

  1. turgor pressurethe pressure that is exerted on the inside of cell walls and that is caused by the movement of water into the cell.


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


  3. facilitated diffusionthe transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins.


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


  5. hypotonicdescribes a solution whose solute concentration is lower than the solute concentration inside a cell.


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