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5 Written questions

5 Matching questions

  1. turgor pressure
  2. exocytosis
  3. diffusion
  4. vesicle
  5. phagocyte
  1. a 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.
  2. b a cell that ingests and destroys (digests) foreign matter or microorganisms.
  3. c the movement of particles from regions of higher density to regions of lower density.
  4. d the pressure that is exerted on the inside of cell walls and that is caused by the movement of water into the cell.
  5. e 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 Multiple choice questions

  1. describes a solution whose solute concentration is lower than the solute concentration inside a cell.
  2. the movement of chemical substances, usually across the cell membrane, against a concentration gradient; requires cells to use energy.
  3. a method of active transport across the cell membrane in which the cell takes in extracellular fluids.
  4. a difference in the concentration of a substance across a distance.
  5. the transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins.

5 True/False questions

  1. ion channeldescribes a solution whose concentration is equal to the solute concentration inside a cell.

          

  2. endocytosisthe process by which a cell membranes surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell.

          

  3. cytolysisthe bursting of a cell.

          

  4. passive transportthe movement of substances across a cell membrane without the use of energy by the cell.

          

  5. contractile vacuolein protists, an organelle that accumulates water and then releases it periodically to maintain osmotic pressure.