Movement of Substances Into & Out of Cells Quiz
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5 questions, one answer each
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1. What is diffusion?
- A. Movement of water through a partially permeable membrane
- B. Net movement of particles from high to low concentration
- C. Movement of particles against a concentration gradient using energy
- D. Movement of a whole cell
2. Which process requires energy from respiration?
- A. Diffusion
- B. Osmosis
- C. Active transport
- D. All of the above equally
3. A potato chip placed in a concentrated sugar solution loses mass. What does this show?
- A. Water moved into the potato cells by osmosis
- B. Water moved out of the potato cells by osmosis
- C. Sugar moved into the potato cells by active transport
- D. No net movement of water occurred
4. Root hair cells absorb mineral ions from soil even when the ion concentration in the soil is lower than inside the cell. Which process explains this?
- A. Diffusion
- B. Osmosis
- C. Active transport
- D. Filtration
5. Two agar blocks of different sizes are placed in acid, and the time for the indicator colour to disappear is measured. The smaller block changes colour faster. What does this best demonstrate?
- A. Smaller blocks have a smaller surface area to volume ratio, slowing diffusion
- B. Smaller blocks have a larger surface area to volume ratio, so diffusion happens proportionally faster relative to volume
- C. Osmosis occurs faster in smaller blocks
- D. Active transport is more efficient in smaller blocks