Module 9 Flashcards
what do membranes consist of
lipids and proteins, with carbohydrates linked to those molecules
are membranes symmetric or asymmetric
asymmetric
how do membranes assemble
through the hydrophobic effect
is the formation of the bilayer spontaneous?
yes
how do drugs get across the membrane
encapsulation within a liposome
which Is the wall and which is the doer?
lipids are the walls and the proteins are the doers
what does higher ration of protein to lipid mean
that its a pre active membrane
what is the membrane structure also called?
fluid mosaic model
what does flippase do
translates a lipid from one side of the bilayer to the other
is flip flop diffusion slow or fast
slow, very slow
what happens when the membrane is below the phase transition site?
membrane is too solid
what happens as the temperature increases?
the saturation increases
what happens when the temperature cools
more unsaturated
is the lipid composition the same for everyone and everything
nope, highly specialized compositions and functions
what are peripheral membrane proteins
loosely associated by electrostatic or hydrogen bonding on the inner or outer side of the membrane
