If a semi-permeable membrane separates two aqueous solutions with different osmotic pressures, what will be the direction of water flow between solutions? From: A. higher osmotic pressure to the solution of lower osmotic pressure. B. lower osmotic pressure to the solution of higher osmotic pressure. C. higher concentration to the solution of lower concentration. D. higher hydrostatic pressure to the solution of lower hydrostatic pressure.
Option B.lower osmotic pressure means a lower solution concentration (and a higher concentration of water molecules). Water moves from the dilute solu- tion into the more concentrated one.
