Question

5. What happens to red blood cells placed in: a. 0.05 % (w/v) NaCl b. 0.9 % (w/v) NaCl c. 2.0% (w/v) NaCl d. distilled water

Answer 1

5. Red Blood cello contain 0.4% (w/v) Nace which is istoric.. When Blood cells are present in such a medium the intracellular & entracellular fluid are in osmotic equilibrium across the cell membrane, there is no net outflor & movement of water due to osmosis - - cal when RBC's are placed in 0.05% (W/V) Nace (re. Hypotenia solutions, whore concentration of Nach in less than 0.8% (w/v) in RBC's), to there will be a movement of water from low concentration to high Cencentration through selectively Permeable Membrane (Sem) Kance cell becames Swell. (om endo-osmosis will saw). (b) when RBC's are placed in 0,4% (w/v) Nace, which is isotonic solution as the concentration is same as tinside the RBC's. Theis no osmos no movements of water hence cell size remains same. 1) When RBC's are placed in 2% (w/v) Nace, which û Hypertonie - solution , whose concentration of Nace u more than 2% (w/v) in RBC's I so there will be movement of water from low concentration to high concentration through SPM hrough SPM. to the cell-size shoes so, the cell sire shrinks leo-osmosis will oueur). i when RBC's are 10 when RR placed in distilled water endo-osmosis is occa occur, thus water moves from outside of the cell to the inside, causing the cell to sell a rupture. After rephring, it doses its heremoglobin. a bodogical importance