Investigating osmosis (AQA GCSE Biology): Flashcards
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Practise the cards
15 cards from this deck
Aim of osmosis practical
Aim of osmosis practical
How sugar concentration affects potato tissue mass
Balance accuracy required
Balance accuracy required
±0.01g
Potato cylinder length to cut
Potato cylinder length to cut
30mm
How full to fill tubes with solution
How full to fill tubes with solution
Two-thirds full
Duration to leave potato in solution
Duration to leave potato in solution
30 minutes
Formula for % change in mass
Formula for % change in mass
Meaning of positive % change
Meaning of positive % change
Mass increased
Meaning of negative % change
Meaning of negative % change
Mass decreased
What zero % change indicates
What zero % change indicates
Concentration inside potato cells
Potato in distilled water result
Potato in distilled water result
Gains mass - water enters by osmosis
Potato in strong sucrose result
Potato in strong sucrose result
Loses mass - water exits cells
Higher sugar conc. effect on water conc.
Higher sugar conc. effect on water conc.
Lower water concentration
Definition of osmosis
Definition of osmosis
Movement of water from high to low water concentration
Graph x-axis plots
Graph x-axis plots
Concentration of sucrose
Graph y-axis plots
Graph y-axis plots
Percentage change in mass