features of the cell membrane Flashcards
(4 cards)
1
Q
what is the role of the phospholipid bilayer
A
Hydrophilic heads face outward, hydrophobic tails face inward, creating a
waterproof barrier
2
Q
what is the role of protein channels
A
Special doors that allow essential molecules (e.g., glucose) to enter and exit
3
Q
what is the role of cholesterol
A
stabilise the membrane, keeping it fluid but not too wobbly
4
Q
what is the role of glycoproteins
A
Act as cell identifiers, helping the immune system distinguish between friendly cells and
pathogens
