5 Written questions
5 Matching questions
- ion channel
- sodium-potassium pump
- a a complex of protein molecules in a cell membrane that form a pore through which ions can pass.
- b a method of active transport across the cell membrane in which the cell takes in extracellular fluids.
- c 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.
- d a cell that ingests and destroys (digests) foreign matter or microorganisms.
- e a carrier protein that uses ATP to actively transport sodium ions out of a cell and potassium ions into the cell.
5 Multiple choice questions
- the transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins.
- the process by which a cell engulfs large particles or whole cells, either as a defense mechanism or as a means to obtain food.
- 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.
- the movement of particles from regions of higher density to regions of lower density.
- the movement of substances across a cell membrane without the use of energy by the cell.
5 True/False questions
turgor pressure → a protein that transports substances across a cell membrane.
hypertonic → describes a solution whose solute concentration is higher than the solute concentration inside a cell.
carrier protein → describes a solution whose solute concentration is higher than the solute concentration inside a cell.
hypotonic → describes a solution whose solute concentration is higher than the solute concentration inside a cell.
concentration gradient → a difference in the concentration of a substance across a distance.