What is the Role of Proton Pumps in Root Hair

Question

What is the role of proton pumps in root hair cells?
A)establish ATP gradients
B)maintain the H⁺ gradient
C)pressurize xylem transport
D)eliminate excess electrons
E)assist in active uptake of water molecules

Accepted Answer

Proton pumps in root hair cells play a critical role in maintaining the H+ gradient, which is important for the active uptake of mineral ions and water molecules. This gradient is established by pumping protons out of the root hair cells, creating a negative charge inside the cell that helps drive the uptake of positively charged mineral ions from the soil. Without these pumps, plants would have a much more difficult time absorbing the nutrients they need to survive.