AP BIOLOGY

Detailed explanation-1: -“Salt essentially draws the water out of their skin – an osmosis effect – and they die within minutes of dehydration, ” says Dr Gordon Port, senior lecturer at Newcastle University.

Detailed explanation-2: -You can consider osmosis to be a special case of diffusion in which diffusion occurs across a semipermeable membrane and only the water or other solvent moves. Diffusion and osmosis are both passive transport processes that act to equalize the concentration of a solution.

Detailed explanation-3: -While osmosis refers to water moving toward a region where there’s a high concentration of something it can dilute, diffusion is when the soluble substance, salt for instance, moves from an area of high concentration to an area of lower concentration.

Detailed explanation-4: -Osmosis is a form of passive transport when water molecules move from low solute concentration(high water concentration) to high solute or low water concentration across a membrane that is not permeable to the solute. There is a form of passive transport called facilitated diffusion.

Detailed explanation-5: -Active transport is the movement of molecules across a cell membrane from a region of their lower concentration to a region of their higher concentration. Since such a movement happens against the concentration gradient, it cannot happen naturally, and needs energy in the form of ATP to be carried out.