Transport in cells
18 review questions with answers for Transport in cells. Read them here, or play the set as a class game on the projector. Free to host, and students join with a code.
Net movement of particles, such as oxygen, from a higher to a lower concentration?
- Osmosis
- Active transport
- DiffusionRight answer
- Exocytosis
What this set covers
Diffusion, osmosis and active transport are compared here, along with partially permeable membranes, isotonic solutions, turgid and plasmolyzed plant cells, red blood cells in water, and why surface area to volume ratio matters for exchange.
- Common mix-up
- Students often mix up diffusion and osmosis: osmosis is only the movement of water across a partially permeable membrane, while active transport is the one that needs energy from respiration.
- Review tip
- Draw a red blood cell and a plant cell in pure water and in strong salt solution, labeling the direction of water movement and the final state of each.
All 18 questions and answers
Net movement of particles, such as oxygen, from a higher to a lower concentration?
Answer: Diffusion
Net movement of water through a partially permeable membrane from a dilute to a more concentrated solution?
Answer: Osmosis
Movement of substances against a concentration gradient using energy from respiration?
Answer: Active transport
Substances that root hair cells absorb from dilute soil water using energy from respiration?
Answer: Mineral ions
Organelle found in large numbers in cells that carry out a lot of active transport?
Answer: Mitochondria
Membrane that lets small molecules such as water through but not larger ones such as sucrose?
Answer: Partially permeable
Material used in the lab as a model partially permeable membrane?
Answer: Visking tubing
External solution with the same solute concentration as the cell contents?
Answer: Isotonic
State of a plant cell after it is placed in pure water?
Answer: Turgid
State of a plant cell whose membrane has pulled away from the wall in a concentrated solution?
Answer: Plasmolysed
What happens to a red blood cell placed in pure water?
Answer: It bursts
What happens to a red blood cell placed in a concentrated salt solution?
Answer: It shrivels
Potato cylinders gain mass when placed in…?
Answer: Distilled water
Effect of raising the temperature on the rate of diffusion?
Answer: Increases
Effect of a thicker exchange surface on the rate of diffusion?
Answer: Decreases
Surface area to volume ratio of a cube with 2 cm sides?
Answer: 3 : 1
As an organism gets larger, its surface area to volume ratio…?
Answer: Falls
Finger-like projections lining the small intestine that increase the area for absorption?
Answer: Villi
Play it as a class game
Play this set opens it in splycr, where you can host it for your class straight away. Hosting needs no account: put the room code on the projector, and students join from a phone with the code and their first name. Each question plays as multiple choice, and the three wrong options were written for that question.