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21. WATER POTENTIAL - Coggle Diagram
21. WATER POTENTIAL
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ANIMAL CELLS
HYPERTONIC
WATER WILL LEAVE THE CELL, CAUSING IT TO SHRIVEL (CRENATION)
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TISSUES MUST BE KEPT IN SOLUTION TO PREVENT CELLULAR DESICCATION AND IT HAS TO SHARE THE SAME OSMOLARITY
WATER POTENTIAL
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WATER POTENTIAL IS RELATIVE TO ATMOSPHERIC PRESSURE AND A TEMPERATURE OF 20 DEGREES, MEASURED IN KPA
MOVEMENT OF WATER
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ADDING SOLUTES LOWERS THE WATER POTENTIAL BECAUSE THE ENERGY IS BEING UTILISED TO FORM POLAR ASSOCIATIONS
INCREASING PRESSURE RAISES WATER POTENTIAL BECAUSE AS WATER HAS GREATER RATES OF COLLISION, IT IS EASIER FOR ENERGY TO BE TRANSFERRED
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WATER MOVEMENT
HYPERTONIC
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WATER LEAVES THE CELL, CAUSING PRESSURE POTENTIAL TO DECREASE
LOSS OF VOLUME CAUSES PRESSURE POTENTIAL TO BUILD INSIDE UNTIL IT MATCHES THE PRESSURE POTENTIAL ON THE OUTSIDE
HYPOTONIC
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WATER ENTER THE CELL, CAUSING THE PRESSURE POTENTIAL TO INCREASE
THE INCREASE IN TURGOR PRESSURE CAUSES THE INTERNAL WATER POTENTIAL TO EVENTUALLY MATCH THE EXTERNAL WATER POTENTIAL