5 Written Questions
5 Matching Questions
- a the movement of particles from regions of higher density to regions of lower density.
- b describes a solution whose concentration is equal to the solute concentration inside a cell.
- c 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.
- d the process by which a cell membranes surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell.
- e in biology, a state that exists when the concentration of a substance is the same throughout a space.
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.
- the movement of substances across a cell membrane without the use of energy by the cell.
- a method of active transport across the cell membrane in which the cell takes in extracellular fluids.
- the movement of chemical substances, usually across the cell membrane, against a concentration gradient; requires cells to use energy.
- a complex of protein molecules in a cell membrane that form a pore through which ions can pass.
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.
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 transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins.
hypertonic → describes a solution whose solute concentration is lower than the solute concentration inside a cell.
hypotonic → describes a solution whose solute concentration is lower than the solute concentration inside a cell.