Required Practical: Osmosis (AQA GCSE Biology): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the aim of this potato osmosis experiment?
What is the aim of this potato osmosis experiment?
To investigate the effect of sugar solutions on potato cell mass
Why is a cork borer used to cut the potato cylinders?
Why is a cork borer used to cut the potato cylinders?
To ensure they are of uniform size
How long should the potato cylinders typically be left in the sugar solutions?
How long should the potato cylinders typically be left in the sugar solutions?
24 hours
Why are the potato cylinders blotted with paper towels after removal from the solutions?
Why are the potato cylinders blotted with paper towels after removal from the solutions?
To remove excess surface liquid
What is the formula for calculating change in mass?
What is the formula for calculating change in mass?
What is the formula for percentage change in mass?
What is the formula for percentage change in mass?
What does the x-axis crossing point indicate on the graph?
What does the x-axis crossing point indicate on the graph?
Equal water potential solutions
What does it mean if a potato cylinder gains mass?
What does it mean if a potato cylinder gains mass?
The solution is hypotonic
What does it mean if a potato cylinder loses mass?
What does it mean if a potato cylinder loses mass?
The solution is hypertonic
What does no significant change in mass indicate?
What does no significant change in mass indicate?
The solution is isotonic
In osmosis, where does water move from?
In osmosis, where does water move from?
Higher to lower water potential
What type of membrane does osmosis occur across?
What type of membrane does osmosis occur across?
Selectively permeable membrane