Unformatted text preview: Hyper tonic-“more” in regards to the solution. More salts, so a cell would shrivel and die. (Freshwater bony fish is hypertonic to freshwater.) Hypo tonic-“less” in regards to the solution. Less salts, meaning more water, so the cell would absorb water faster than it could take it out, so it would explode. (Marine bony fish are hypotonic to seawater.) Iso tonic-“same”, if an animal cell is placed into an isotonic solution, there will be no net movement of water across the membrane. Because, water would move in, at the same rate it moved out. (marine invertebrates are isotonic w/ seawater. Accumulates free amino acids to match the tonicity of sea water.) (Sharks and rays are isotonic w/ seawater. Accumulate .5m urea.) Osmosis- diffusion of water across a selectively impermeable membrane, from a region of lower solute concentration to a region of higher solute concentration....
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- Spring '07
- Osmosis, isotonic w/ seawater