AP BIOLOGY

Detailed explanation-1: -Osmosis is the process of diffusion of molecules from the region of higher concentration to the lower concentration through a semipermeable membrane.

Detailed explanation-2: -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-3: -Osmosis is a specific type of diffusion; it is the passage of water from a region of high water concentration through a semi-permeable membrane to a region of low water concentration.

Detailed explanation-4: -Excerpt. In physiology, osmosis (Greek for push) is the net movement of water across a semipermeable membrane. Across this membrane, water will tend to move from an area of high concentration to an area of low concentration.

Detailed explanation-5: -Semipermeable membranes are used for reverse osmosis where an applied pressure selectively forces water from a solution through the membrane to separate it from solute. Strong synthetic membranes are required for effective, i.e., high pressure, purification.