1 - A. hypotonic solution - has fewer dissolved particles...

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1. diffusion - the movement of molecules from an area of higher concentration to an  area of lower concentration   * Diffusion works as a transport mechanism as long as the substance to be transported  is small, and the concentration gradient is favorable (high to low concentration).   examples - Gases such as O 2  and CO 2  diffuse easily through cell membranes.   2. osmosis - the diffusion of water through a selectively permeable membrane   * The direction water will flow toward is determined by the concentration of dissolved  particles inside and outside of the cell. The following possibilities exist:
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Unformatted text preview: A. hypotonic solution - has fewer dissolved particles than inside the cell, the net flow of water is into the cell, the cell increases in size as it absorbs water. B. hypertonic solution - has more dissolved particles than inside the cell, the net flow of water is out of the cell, the cell shrinks as it loses water. C. isotonic solution - has the same concentration of dissolved particles as inside the cell, there is no net change in the flow of water, the cell remains the same size. osmoregulation - the control of water balance in living organisms...
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This note was uploaded on 11/18/2011 for the course BIOLOGY bi 101 taught by Professor - during the Fall '10 term at Montgomery.

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