5 Written questions
5 Matching questions
- passive transport
- a describes a solution whose solute concentration is higher than the solute concentration inside a cell.
- b the movement of particles from regions of higher density to regions of lower density.
- c the movement of substances across a cell membrane without the use of energy by the cell.
- d a cell that ingests and destroys (digests) foreign matter or microorganisms.
- e in biology, a state that exists when the concentration of a substance is the same throughout a space.
5 Multiple choice questions
- describes a solution whose solute concentration is lower than the solute concentration inside a cell.
- the process by which a cell membranes surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell.
- a carrier protein that uses ATP to actively transport sodium ions out of a cell and potassium ions into the cell.
- the transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins.
- a protein that transports substances across a cell membrane.
5 True/False questions
active transport → the movement of chemical substances, usually across the cell membrane, against a concentration gradient; requires cells to use energy.
phagocytosis → the process by which a cell engulfs large particles or whole cells, either as a defense mechanism or as a means to obtain food.
isotonic → describes a solution whose solute concentration is lower than the solute concentration inside a cell.
osmosis → 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.
plasmolysis → 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.