Transport Across Cell Membranes (AQA A-Level Biology): Flashcards

Movement of water molecules from higher to lower water potential through a selectively permeable membrane

Psi ($ψ$)

0 kPa

Lowers it/makes it negative

Higher external water potential than inside cell

Equal water potential inside and outside cell

Lower external water potential than inside cell

Bursting of red blood cells in hypotonic solution

Swollen cell, protoplast presses against cell wall

Protoplast shrinks away from cell wall due to water loss