Answer: All the answers seem correct.
Osmosis - the movement of water molecules across the membranes of a cell.
Vesicles - small structures within a cell, consisting of fluid enclosed by a lipid bilayer involved in transport, buoyancy control, and enzyme storage.
For the third question, the contractile vacuole regulates the flow of water into and out of the cells so that means the concentration of the water would be greater outside of the cell than inside of the cell because the purpose of the contractile vacuole is to remove water.
