5 Written questions
5 Matching questions
- turgor pressure
- passive transport
- a the movement of substances across a cell membrane without the use of energy by the cell.
- b in biology, a state that exists when the concentration of a substance is the same throughout a space.
- c the movement of particles from regions of higher density to regions of lower density.
- d describes a solution whose solute concentration is lower than the solute concentration inside a cell.
- e the pressure that is exerted on the inside of cell walls and that is caused by the movement of water into the cell.
5 Multiple choice questions
- 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.
- a method of active transport across the cell membrane in which the cell takes in extracellular fluids.
- the process by which a cell engulfs large particles or whole cells, either as a defense mechanism or as a means to obtain food.
- in protists, an organelle that accumulates water and then releases it periodically to maintain osmotic pressure.
- the movement of chemical substances, usually across the cell membrane, against a concentration gradient; requires cells to use energy.
5 True/False questions
sodium-potassium pump → a carrier protein that uses ATP to actively transport sodium ions out of a cell and potassium ions into the cell.
vesicle → 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.
endocytosis → the process by which a cell membranes surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell.
phagocyte → the process by which a cell engulfs large particles or whole cells, either as a defense mechanism or as a means to obtain food.
facilitated diffusion → the movement of particles from regions of higher density to regions of lower density.