3 Flashcards
1
Q
What is the lipid bilayer?
A
The lipid bilayer is a permeability barrier.
2
Q
What is the function of the plasma (cell) membrane?
A
The plasma (cell) membrane acts as a barrier but allows nutrients to enter and wastes to exit.
3
Q
What determines what moves in and out of a cell?
A
Permeability determines what moves in and out of a cell.
4
Q
What does selectively permeable mean for the plasma membrane?
A
A selectively permeable plasma membrane allows some materials to move freely while restricting others.
5
Q
What are the factors that selective permeability is based on?
A
Selective permeability restricts materials based on size electrical charge molecular shape and lipid solubility.
5
Q
A
