transport across membranes Flashcards
1
Q
what do membranes do
A
control what enters exits cell
provide internal transport system
isolate enzymes that can damage cells
compartmentalise cell into diff organelles
2
Q
what is function of phospholipid bilayer
A
prevent water soluble substances from entering and exiting
allow small molecules to diffuse through bilayer
phospolipids in membrane to make it flexible
3
Q
fluid mosaic model
A
double bilayer
proteins scattered
