Prokaryotic cells do not have membrane bound organelles and eukaryotic cells do have membrane bound organelles
The word isotonic is used to refer to the solutions (two solutions) which have the same osmotic pressure in both sides of the semipermiable membrane. The condition allows the free movement of water across the membrane. However, this does not change the concentration of the solution across the membrane.
Hence, osmosis may not occur in this condition.
Osmosis is basically the spread of water across a particular absorbent membrane.
It’s the doctor of all systems