Question

When auxin enters a cell in the elongation zone it I Select ] the proton pump. This Select) the cell. This voltage change causes Select ] Select ] also [Select I Select ]) Select ] [ Select ] ions to the cell through channels. It the Select] | (H+ or Na+?)/ co-transporter. All this ion movement ^ | cell osmotic potential. This causes water to : # the cell, which [Select] pressure potential in the cell. The I Select in pH in the wall space activates : . which cuts quick links betwee V[Select] I Select ] extensors hyperpolarizes K+ extensins microtubules exit Ca++ increase(s) Na+ sugar filaments enter depolarizes expansins inhibits activates decrease(s) H+ elongators microfibrils Question 12 pts ring What response can be elicited in some plants by shining additic the day? The de-etiolation respnse A phototropic response

Answer 1

When auxin enters a cell in the elongation zone it activates the proton pump.This hyperpolarizes the cell. This voltage change causes K⁺ions to enter the cell through channels. It also activates the H⁺ (H⁺ or Na⁺?)/ sugar co-transporter. All this ion movement decrease(s) cell osmotic potential. This causes water to enter the cell, which increase(s) pressure potential in the cell. The decrease(s) in pH of wall space activates expansins, which cuts quick link between microfibrlis.