cell membrane Flashcards
1
Q
phospholipid bilayer
A
hydrophilic head faces outwards
hydrophobic tail faces inwards
2
Q
cholesterol
A
hydrophobic (embedded within membrane)
provides structural support
3
Q
carrier proteins
A
intrinsic
bind to large molecules, and change shape to carry the molecule across the bilayer
requires ATP
4
Q
channel proteins
A
intrinsic
water-filled tubes which allow water-soluble ions to diffuse across the bilayer
requires polar molecules
5
Q
glycolipid
A
extrinsic
cell-surface receptor for some chemicals
allows cells to attach to each other (tissue formation)
6
Q
glycoprotein
A
extrinsic
cell-surface receptor for hormones and neurotransmitters
allows cell recognition (immune system)
