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5 Written questions

5 Matching questions

  1. vesicle
  2. phagocyte
  3. phagocytosis
  4. turgor pressure
  5. equilibrium
  1. a the process by which a cell engulfs large particles or whole cells, either as a defense mechanism or as a means to obtain food.
  2. b in biology, a state that exists when the concentration of a substance is the same throughout a space.
  3. c the pressure that is exerted on the inside of cell walls and that is caused by the movement of water into the cell.
  4. d a cell that ingests and destroys (digests) foreign matter or microorganisms.
  5. e 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 Multiple choice questions

  1. the 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.
  2. the movement of particles from regions of higher density to regions of lower density.
  3. in protists, an organelle that accumulates water and then releases it periodically to maintain osmotic pressure.
  4. the movement of chemical substances, usually across the cell membrane, against a concentration gradient; requires cells to use energy.
  5. describes a solution whose solute concentration is higher than the solute concentration inside a cell.

5 True/False questions

  1. concentration gradientin protists, an organelle that accumulates water and then releases it periodically to maintain osmotic pressure.

          

  2. pinocytosisa method of active transport across the cell membrane in which the cell takes in extracellular fluids.

          

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

          

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