Cell Membrane Flashcards
1
Q
Role of cholesterol in phospholipid bilayer membrane
A
It provides stability of the plasma membrane by limiting the movement of phospholipids and it reduces the permeability of the membrane
2
Q
What is the phospholipid bilayer
A
Two layers of phospholipids
3
Q
Properties of the phospholipids
A
Phospholipids have a hydrophilic phosphate head and a hydrophobic fatty acid tails
4
Q
How does the membrane structure help to keep the solutions apart
A
The phosphate heads are hydrophilic and attract water and the lipid tails are hydrophobic and repel water
5
Q
Role of the phospholipid bilayer
A
1/ Control of substances in and out of the cell
2/ electrical insulation because it prevent some ions from moving in and out and allows some
