level: diffusion and osmosis
Questions and Answers List
level questions: diffusion and osmosis
| Question | Answer |
|---|---|
| what is diffusion | net movement of particles from a high concetration to low concentration |
| why is diffusion important? | oxygen entering the lungs, glucose and amino acids pass from gut to blood, plants absorb co2 in to leaves |
| how can we increase diffusion | large surface area, high temprature, concentraion gradient kept high |
| what is osmosis | net movment of water from high water potential to low water potential across a partially permeable membrane |
| how does osmosis affect plant cells and animal cells differently | plant cells not permanently damaged, cell walls give plant cell support, animal cells are permanently damaged, aniaml cells shrink with water loss and burst if swell too much |