Question

In which directions does water flow in osmosis between hypotonic and hypertonic solutions separated by a semi-permeable membrane?

a) From hypertonic to hypotonic
b) From hypotonic to hypertonic
c) Both directions simultaneously
d) There is no water flow

Answer 1

In osmosis, water moves from a hypotonic solution to a hypertonic solution across a semi-permeable membrane until isotonic equilibrium is achieved.

Step-by-step explanation:

In osmosis, water flows across a semi-permeable membrane from a hypotonic solution, which has a higher concentration of water, to a hypertonic solution, which has a lower concentration of water. This process continues until the concentrations on both sides of the membrane equalize and the solutions become isotonic. This directional flow of water is due to the presence of a concentration gradient across the semi-permeable membrane.