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CELL TRANSPORT, Simple Diffusion, Facilitated Diffusion, Osmosis, Throught…
CELL TRANSPORT
Passive Transport
Doesn´t need energy
Molecules move from HIGH to LOW concentration
WITH the gradient
Active Transport
Uses energy
Molecules move LOW to HIGH concentration
AGAINST the gradient
Cell Membrane Structure
Phospholipid Bilayer
Simple Diffusion
Small, Non-polar, molecules CO2 - O2
Molecules pass trough the BI-Layer
Facilitated Diffusion
Use Transport molecules
large, polar molecues
Osmosis
Only for WATER transport
movement of WATER molecules through a membrane
Depending on the cells necesities
it goes trought:
SIMPLE DIFFUSION
or FACILITATED DIFUSSION
Throught the membrane
Opposite sense of FACILITATED DIFFUSION
Uses channel protein
Cytosis
ENDO
EXO
Homeonstasis
what goes in and out
Aquapourins
It requires a VESICLE to transport LARGER molecules