Required practical - Investigating osmosis (AQA GCSE Biology Combined Science): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the main aim of the osmosis practical with potato tissue?
What is the main aim of the osmosis practical with potato tissue?
To see how sucrose affects potato mass
What is the purpose of a cork borer in this practical?
What is the purpose of a cork borer in this practical?
It cuts neat potato cylinders
What is a good range of sucrose concentrations to use?
What is a good range of sucrose concentrations to use?
to g/dm
How long should each potato cylinder be trimmed to?
How long should each potato cylinder be trimmed to?
About mm long
How long should potato cylinders stay in the sucrose solutions?
How long should potato cylinders stay in the sucrose solutions?
About 30 minutes
What does the percentage change formula calculate?
What does the percentage change formula calculate?
What does a negative percentage change in mass mean?
What does a negative percentage change in mass mean?
The potato lost mass
What happens to potato cylinders in low sucrose concentrations?
What happens to potato cylinders in low sucrose concentrations?
They gain mass as water moves into cells
Where does osmosis move water from and to?
Where does osmosis move water from and to?
From high to low water potential
What does the isotonic point on a graph show?
What does the isotonic point on a graph show?
Concentration inside the potato cells