Cell membranes are semi-permeable. That is why they can allow only some substances to enter the cell. It basically depends on the size of the molecules. Smaller atoms like water can easily pass through. However, macromolecules such as sugars, oils and proteins cannot easily pass because they contain a long chain of monomers.
the force of bestop will fling you forward and the water will go to one side of the bottle and hit the side of the bottle and curved back up and come out because the force of