5 Written questions
5 Matching questions
- active transport
- a the movement of chemical substances, usually across the cell membrane, against a concentration gradient; requires cells to use energy.
- b the bursting of a cell.
- c a method of active transport across the cell membrane in which the cell takes in extracellular fluids.
- 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.
- 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
- a carrier protein that uses ATP to actively transport sodium ions out of a cell and potassium ions into the cell.
- 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.
- describes a solution whose concentration is equal to the solute concentration inside a cell.
- the transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins.
- the movement of particles from regions of higher density to regions of lower density.
5 True/False questions
turgor pressure → the pressure that is exerted on the inside of cell walls and that is caused by the movement of water into the cell.
hypertonic → describes a solution whose solute concentration is higher than the solute concentration inside a cell.
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.
passive transport → the movement of chemical substances, usually across the cell membrane, against a concentration gradient; requires cells to use energy.
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.