Principles of Biology 1107 Lab - Exercise 5 Terms questions and answers
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Simple diffusion - answer movement of a solute from an area of high
concentration to an area of low concentration
Osmosis - answer diffusion of water across a selectively permeable membrane
Bulk flow - answer Collective movement of substances in the same direction in
response to a force or pressure
Solutes - answer any substance dissolved in a solution
Tonicity - answer The ability of a solution surrounding a cell to cause that cell to
gain or lose water.
Isotonic - answer when the concentration of two solutions is the same, there's no
net movement of molecules in a single direction but water diffuses free across the
membrane in both directions
Hypotonic - answer Having a lower concentration of solute than another solution.
Water moves from low to high concentration. A cell in this solution should swell.
Hypertonic - answer Having a higher concentration of solute than another
solution. A cell in this solution should shrink.
Osmolality - answer sum of all osmotic potentials caused by all solutes in a
solution. (collective concentration of solutes in a solution of pure water)
