Distinguish among isotonic hypertonic and hypotonic solutions.?

Answer 1

Hypertonic Solution

• Greater concentration of solute outside of cell than inside
• Water potential is higher; osmotic potential is lower
• Net movement of water from the cell to the solution across a semi-permeable membrane
• In excess, causes crenation in animal cells and plasmolysis in plant cells

Hypotonic Solution

• Greater concentration of solute inside cell than outside
• Water potential is low (0 in distilled water); osmotic potential is higher
• Net movement of water into the cell from the solution across a semi-permeable membrane
• A pure water solution (DH2O) can cause lysis (bursting) in animal cells and turgor pressure in plant cells

Isotonic Solution

• Concentration inside cells is equal to that of the solution
• No net movement of water across a semi-permeable membrane (although there is osmosis)
• Cell is at equilibrium (what it strives for)

Isotonic- no water movement across the cell membrane since the concentration of ions are farily equal in and out of the cell.

Hypertonic-a condition where cell loose it water content and ultimately plasmolyze due to the higher ionic concentration outside the cell than inside

Hypotonic-reverse of hypertonic, where cell actually swallow may ultimately burst due to the entry of water as the ionic concetration is too low outside the cell than inside

Answer 2

Hypotonic solution has a lower concentration of solutes when compared to the solvent.

Hypertonic solution has a higher concentration of solutes when compared to the solvent.

Isotonic solution has the same concentration of solutes as surronding cells.