How do osmosis and diffusion related

Mar 18, Explanation: Osmosis is diffusion of water in and out of the cell. Related questions How does polarity of molecules affect diffusion? How does diffusion differ from endocytosis and exocytosis? How does diffusion affect homeostasis? How are diffusion and osmosis different? How is diffusion involved in osmosis? Process Description Substances transported Energy required Diffusion Substances move from a high to a lower concentration down a concentration gradient Carbon dioxide, oxygen, water, food substances, wastes, eg urea No Osmosis Water moves from a high to a lower concentration across a partially permeable membrane and down a concentration gradient Water No Active transport Substances more from low to higher concentration up a concentration gradient Mineral ions into plant roots.

Glucose from the gut into intestinal cells, from where it moves into the blood Yes. Substances move from a high to a lower concentration down a concentration gradient. Diffusion and osmosis are passive processes, meaning they don't need energy to occur. Both are spontaneous processes. Diffusion depends on the random movement of particles or molecules. It increases with a rise in temperature because heat increases the random movement of molecules.

In osmosis, water freely moves across a membrane from an area of low solute concentration, or hypotonic solution, to one of high solute concentration, or hypertonic solution.

When the solute concentration is equal on both sides of the membrane, the solution is said to be "isotonic. Diffusion across a membrane depends on the size and electric charge of molecules. Smaller molecules diffuse faster than larger molecules. Charged molecules do not diffuse across animal or plant cell membranes; they need to enter or leave cells by other mechanisms, because cell membranes are made up of hydrophobic lipids and repel charged molecules similar to how oil repels vinegar.

Osmosis is the flow of water molecules and depends on the particle concentration — not the type of molecule on either side of the membrane.