Bio - Osmosis 0.0 / 5 ? BiologyTransport Across MembranesASAQA Created by: KTPLCreated on: 21-11-16 14:54 What only thing does osmosis involve? Water 1 of 15 What is a low water potential? A low concentration of water, a high concentration of solute 2 of 15 What is a high water potential? A high concentration of water, a low concentration of solute 3 of 15 What is the water potential of water? 0 4 of 15 What is the units of water potential? kPa 5 of 15 What does hypERtonic mean? Low water potential (concentrated solution) 6 of 15 What does isotonic mean? Both solutions have the same water potential 7 of 15 What does hypOtonic mean? High water potential (weak solution) 8 of 15 What is the definition of osmosis? Osmosis is the MOVEMENT of water across a PARTIALLY PERMEABLE MEMBRANE, DOWN a water potential gradient. 9 of 15 In a hypertonic solution, what happens to an animal cell? It crenates - the water moves out of the cell 10 of 15 In an isotonic solution, what happens to an animal cell? Nothing 11 of 15 In a hypotonic solution, what happens to a plant cell? Cell becomes turgid - the water moves into the cell (but does not burst bc. of cell wall) 12 of 15 In a hypotonic solution, what happens to an animal cell? Osmotic Lysis - the cell bursts bc. no cell wall as water moves into the cell 13 of 15 In an isotonic solution, what happens to a plant cell? Nothing 14 of 15 In a hypertonic solution, what happens to a plant cell? Becomes plasmolysed - water moves out of the vacuole and cytoplasm, but the cell wall keeps its shape 15 of 15
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