Cell Growth by Elongation - Quick Study Cards

Click each card to reveal the answer

Where does IAA bind?

Receptor proteins on cell surface membrane

What do ATPase proton pumps move?

H+ ions from cytoplasm to cell wall

Effect on cell wall pH?

pH lowers (becomes acidic)

Function of expansins?

Loosen cellulose microfibril bonds

Effect of K+ channels opening?

Decreases cytoplasm water potential

How does water enter?

Through aquaporins by osmosis

Final result?

Increased pressure stretches cell wall → elongation