Osmosis (OCR GCSE Biology A, Combined (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is osmosis?
What is osmosis?
Water moving from less to more concentrated
What does a dilute solution of sugar have?
What does a dilute solution of sugar have?
High water concentration & high potential
What does a concentrated solution of sugar have?
What does a concentrated solution of sugar have?
Low water concentration & low potential
Does osmosis require energy?
Does osmosis require energy?
No, it is passive
What is an isotonic solution?
What is an isotonic solution?
External & internal concentrations equal
What is a hypertonic solution?
What is a hypertonic solution?
External concentration higher; water out
What is a hypotonic solution?
What is a hypotonic solution?
External concentration lower; water in
What happens to animal cells in a dilute external solution?
What happens to animal cells in a dilute external solution?
Water moves in and they burst
What happens to animal cells in a concentrated external solution?
What happens to animal cells in a concentrated external solution?
Water leaves and they shrivel
What happens to plant cells in a dilute external solution?
What happens to plant cells in a dilute external solution?
Water moves in; turgor pressure develops
What is the function of turgor pressure in plants?
What is the function of turgor pressure in plants?
Keeps leaves and stems rigid
What is plasmolysis?
What is plasmolysis?
Cell membrane moves away from cell wall