what is the percentage of isotonic,hypertonic, and hyoptonic? Explain?

Answer 1

Isotonic: noting or pertaining to solutions characterized by equal osmotic pressure = 50% water molecules, 50% solute molecules in cell

Hypertonic: noting a solution of higher osmotic pressure than another solution with which it is compared = 100% solute molecules in cell

Hypotonic: noting a solution of lower osmotic pressure than another solution with which it is compared = 100% water molecules in cell

Diagram to show the effects: http://upload.wikimedia.org/wikipedia/en/7/76/Osmotic_pressure_on_blood_cells_diagram.svg

Answer 2

These terms compare a solution with a cell or other system.

If a cell is in a solution that has the same percentage of solutes (dissolved material) as inside the cell, that's isotonic.
Think of the s in the words to remember that iso means same. This is ideal for the cell and the cell does not have any net change in water content.

If a cell is in a hypertonic solution:
-- the solution has a higher concentration of solutes and thus a lower concentration of water than the inside of the cell.
-- More water diffuses out of the cell than into the cell, and the cell's contents shrink.
-- hyper means over ... the solution has higher % of solutes
-- Memory trick: hyperrrrrrr shrrrrrrink

If a cell is in a hypotonic solution
-- the solution has a lower concentration of solutes and thus a higher concentration of water than the inside of the cell.
-- more water diffuses out of the cell than into it, and the cell's content swell up. An animal cell may burst from the pressure.
-- Memory trick: hyp-O cell swells up like an O