Osmosis and water potential Quiz
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5 questions, one answer each
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1. Which has the lowest water potential?
- A. Pure water, 0 kPa
- B. −200 kPa
- C. −600 kPa
- D. −50 kPa
2. A cell at −500 kPa is placed in a solution at −300 kPa. What happens?
- A. Water enters the cell
- B. Water leaves the cell
- C. Solute enters the cell
- D. There is no net movement
3. What is a cell called when water has entered its vacuole and pushed the membrane against the wall?
- A. Plasmolysed
- B. Flaccid
- C. Turgid
- D. Haemolysed
4. A potato cylinder of 2.00 g is 2.30 g after 30 minutes. What is the percentage change?
- A. +15%
- B. +13%
- C. −15%
- D. +30%
5. The calibration curve crosses zero change at 0.30 mol dm⁻³. What does this mean?
- A. The potato has no water
- B. The solution and tissue have equal water potential
- C. The potato is plasmolysed
- D. The cells have burst