Required practical - Investigating osmosis (AQA GCSE Biology Combined Science): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
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Practise the cards
10 cards from this deck
Tool used to cut neat potato cylinders
Tool used to cut neat potato cylinders
Cork borer
Length potato cylinders should be cut to
Length potato cylinders should be cut to
About 30mm long
How long to leave potato in sucrose solution
How long to leave potato in sucrose solution
About 30 minutes
Formula for % change in mass
Formula for % change in mass
What a positive % change in mass means
What a positive % change in mass means
Potato gained mass (water moved in)
What a negative % change in mass means
What a negative % change in mass means
Potato lost mass (water moved out)
Effect of low sucrose concentration on potato mass
Effect of low sucrose concentration on potato mass
Gains mass (water moves into cells)
Effect of high sucrose concentration on potato mass
Effect of high sucrose concentration on potato mass
Loses mass (water moves out of cells)
What the isotonic point shows
What the isotonic point shows
Concentration inside the potato cells
Direction osmosis moves water
Direction osmosis moves water
From high water potential to low water potential