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5 Written questions

5 Matching questions

  1. cytolysis
  2. endocytosis
  3. passive transport
  4. contractile vacuole
  5. facilitated diffusion
  1. a in protists, an organelle that accumulates water and then releases it periodically to maintain osmotic pressure.
  2. b 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. c the transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins.
  4. d the bursting of a cell.
  5. e the movement of substances across a cell membrane without the use of energy by the cell.

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 pressure that is exerted on the inside of cell walls and that is caused by the movement of water into the cell.
  3. 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.
  4. a complex of protein molecules in a cell membrane that form a pore through which ions can pass.
  5. describes a solution whose concentration is equal to the solute concentration inside a cell.

5 True/False questions

  1. phagocytosisa method of active transport across the cell membrane in which the cell takes in extracellular fluids.


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


  3. equilibriumin biology, a state that exists when the concentration of a substance is the same throughout a space.


  4. pinocytosisthe 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. vesiclea cell that ingests and destroys (digests) foreign matter or microorganisms.


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