Exchanging Substances
Diffusion
Osmosis
Active Transport
Exchanging materials
- Created by: Lamchops
- Created on: 21-12-16 09:08
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- Exchanging Substances
- Diffusion
- Net movement of particles of area of high conc to area of low conc down conc gradient.
- greater difference in conc, faster rate of diffusion
- glucose/O2 move by diffusion
- Osmosis
- movement of water from dilute to conc thru partially permeable membrane.
- important to plant cells
- keep cells turgor
- Isotonic- con of solutes outside=inside
- hypERtonic- HIGH INSIDE then OUT
- hyPOtonic-HIGH inside then out
- Active transport
- move against conc gradient
- uses energy from respiration
- absorb ions from dilute solutions
- Exchanging materials
- large surface area
- thin walls
- efficient blood supply
- ventilated
- Diffusion
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