Movement of Substances Into & Out of Cells Quiz
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5 questions, one answer each
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1. Which process describes net movement from high to low concentration?
- A. Osmosis
- B. Active transport
- C. Diffusion
- D. Plasmolysis
2. What is required for active transport?
- A. A partially permeable membrane only
- B. Energy released by respiration
- C. A dilute solution outside the cell
- D. A steep gradient in the direction of movement
3. A potato cylinder weighs 4.0g before, 4.4g after soaking. What is the % change?
- A. +4%
- B. +10%
- C. -10%
- D. +40%
4. A plant cell in concentrated sugar solution: most likely outcome?
- A. Becomes turgid
- B. Bursts
- C. Becomes flaccid as water moves out
- D. No water movement
5. Why use equal-sized potato cylinders in each test tube?
- A. Easier to identify by colour
- B. Keeps surface area to volume ratio consistent for fair comparison
- C. Different sizes dissolve differently
- D. Osmosis needs a minimum size