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Which of the following is NOT an example of osmosis?
Absorption of water by plant roots
Movement of O2 and CO2 in and out of the living cell
Swelling of raisins when soaked in water
Gaining of water by unicellular fresh water organisms
Gaining of water by unicellular fresh water organisms
Osmosis is the spontaneous net movement of solvent molecules (usually water) through a semipermeable membrane from a region of lower solute concentration to a region of higher solute concentration. The movement of O2тАЛ and CO2тАЛ in and out of living cells occurs via simple diffusion, not osmosis.
Osmosis is the spontaneous net movement of solvent molecules (usually water) through a semipermeable membrane from a region of lower solute concentration to a region of higher solute concentration. The movement of O2тАЛ and CO2тАЛ in and out of living cells occurs via simple diffusion, not osmosis.
Spraying perfume in one corner of a room so that it spreads everywhere is diffusion. Water entering plant roots or raisins swelling in water represents osmosis.
O-S-M-O-S-I-S: Only Solvent Moves On Semipermeable In Solutions
╬а=iCRT тАФ Osmotic pressure formula
╬иwтАЛ=╬иsтАЛ+╬иpтАЛ тАФ Water potential equation
Diffusion is the passive movement of particles (atoms, ions, or molecules) from a region of higher concentration to a region of lower concentration, which applies to gases like O2тАЛ and CO2тАЛ. In contrast, osmosis specifically refers to the transport of solvent (water) molecules across a selectively permeable membrane based on water potential gradients.
Osmosis involves the net movement of solvent (water) across a semipermeable membrane.
Diffusion is the passive movement of solute/gas molecules from high to low concentration regions without needing a semipermeable membrane.
Gas exchange (O2тАЛ and CO2тАЛ) in living cells occurs strictly via simple diffusion.
Plant root absorption, raisin swelling, and freshwater organism water intake are classic examples of osmosis.
Water absorption by plant roots from soil
Water balance in human red blood cells
Desalination of water via reverse osmosis
Option A: Absorption of water by plant root hairs is driven by osmosis due to higher solute concentration inside the root cells.
Option C: Swelling of raisins in water occurs because water enters the raisin via endosmosis.
Option D: Unicellular freshwater organisms gain water continuously due to a hypertonic internal environment
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