It is hypothesised that auxin stimulates cell elongation, and therefore plant growth, by triggering the release of H⁺ inside cells and therefore acidifying the intracellular environment. What protein would need to be activated to achieve this, and where would it be located?

Question

Quizplus · Accepted Answer

The ATPase proton pump in the plasma membrane is responsible for pumping H⁺ ions out of the cell, which acidifies the cell wall environment, leading to cell elongation.

It Is Hypothesised That Auxin Stimulates Cell Elongation, and Therefore