MICROANATOMY

Detailed explanation-1: -Osmosis is a special type of diffusion, namely the diffusion of water across a semipermeable membrane. Water readily crosses a membrane down its potential gradient from high to low potential (Fig. 19.3 ) [4]. Osmotic pressure is the force required to prevent water movement across the semipermeable membrane.

Detailed explanation-2: -Osmosis is the diffusion of water from high concentration to low concentration. When you drink water, your cells have a lower concentration of water than the water in your digestive system. So water flows across the cell membrane (from high concentration to low concentration) of your cells hydrating you.

Detailed explanation-3: -Osmosis is the net movement of water across a selectively permeable membrane driven by a difference in solute concentrations on the two sides of the membrane.

Detailed explanation-4: -Answer and Explanation: The movement of molecules through a membrane by filtration depends upon the presence of (b) hydrostatic pressure. Hydrostatic pressure is what will cause the movement of molecules through a membrane due to the presence of a pressure gradient.