level: Level 1 of Transport
Questions and Answers List
level questions: Level 1 of Transport
| Question | Answer |
|---|---|
| Describe Osmosis | • The movement of water molecules from an area of high concentration to an area of low concentration through a selectively permeable membrane |
| Describe Diffusion and why its important to cellular function | • The movement of molecules from an area of high concentration to an area of low concentration until they are evenly spread • This allows substances such as oxygen to enter a cell and waste products such as carbon dioxide to be removed. • Diffusion happens when the particles are free to move |
| Describe Active transport | • Dissolved molecules moving across a cell membrane from a lower to a higher concentration. • Particles move against the concentration gradient and require an input of energy from the cell |