5 Written Questions
5 Matching Questions
- turgor pressure
- carrier protein
- a the pressure that is exerted on the inside of cell walls and that is caused by the movement of water into the cell.
- b in biology, a state that exists when the concentration of a substance is the same throughout a space.
- c a protein that transports substances across a cell membrane.
- d the bursting of a cell.
- e the contraction or shrinking of the cell membrane of a plant cell in a hypertonic solution in response to the loss of water by osmosis.
5 Multiple Choice Questions
- in protists, an organelle that accumulates water and then releases it periodically to maintain osmotic pressure.
- describes a solution whose concentration is equal to the solute concentration inside a cell.
- the process by which a cell engulfs large particles or whole cells, either as a defense mechanism or as a means to obtain food.
- a cell that ingests and destroys (digests) foreign matter or microorganisms.
- 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 True/False Questions
hypertonic → describes a solution whose solute concentration is lower than the solute concentration inside a cell.
ion channel → 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.
osmosis → the bursting of a cell.
sodium-potassium pump → 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.
facilitated diffusion → the movement of particles from regions of higher density to regions of lower density.