Biology Osmosis Concepts Quiz

By definition, osmosis is the diffusion of water through a selectively permeable membrane from an area of high water potential (low solute concentration) to and area of low water potential (high solute concentration).

The substance being dissolved in a solution.

For osmosis to occur the membrane must be permeable to water but impermeable to the solute and the concentration of the solute must be different on the two sides of the membrane.

<p>The pressure that is just sufficient to prevent water from moving across the membrane.</p> Signup and view all the answers

<p>This means that two solutions have the same number of particles.</p> Signup and view all the answers

<p>This means that one solution is more concentrated than the other.</p> Signup and view all the answers

<p>This means that one solution is less concentrated than the other.</p> Signup and view all the answers

<p>This is a word used to describe how a solution affects a cell when the cell is placed in it.</p> Signup and view all the answers

<p>Isotonic solutions have the same concentration of osmotically active particles as are found in the cell.</p> Signup and view all the answers

<p>If the cell shrinks (crenates), we say the solution was hypertonic.</p> Signup and view all the answers

<p>If the cell swells, we say that the solution was hypotonic.</p> Signup and view all the answers

<p>Osmolarity doesn't take into account the nature of the solutes while tonicity is dependent upon the concentration of the nonpermeable solutes.</p> Signup and view all the answers

<p>Comparing solution to cell WHEN NOT MIXING THEM.</p> Signup and view all the answers

<p>Dextrose will; Saline (Na+) will not.</p> Signup and view all the answers