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5 Written questions

5 Matching questions

  1. active transport
  2. exocytosis
  3. cytolysis
  4. pinocytosis
  5. osmosis
  1. a the movement of chemical substances, usually across the cell membrane, against a concentration gradient; requires cells to use energy.
  2. b the bursting of a cell.
  3. c a method of active transport across the cell membrane in which the cell takes in extracellular fluids.
  4. d 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. e 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.

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. 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.
  3. describes a solution whose concentration is equal to the solute concentration inside a cell.
  4. the transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins.
  5. the movement of particles from regions of higher density to regions of lower density.

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

          

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

          

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

          

  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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