How bacteria cell maintain a high intracellular pH while growing in low pH environment?

First of all there is a physical barrier composed of the cell membrane and cell wall of the bacteria that prevent or inhibit certain ions to enter or exit the cell.


Then there are protein molecules that are located within the membrane and act as an ion pump, by removing some ions from the cell or by introducing some ions in the cell or by doing both at the same time. These pumps require energy to function.


A third element are also proteins that act as a ion channel. These ion channels do not require energy.





The ions that influence the intracellular pH are H+ (mainly), Cl-, Na+, K+, HCO3-, PO4 3-

How bacteria cell maintain a high intracellular pH while growing in low pH environment?
Energy dependent pumps move protons out of the cell.
Reply:http://en.wikipedia.org/wiki/Na-K_pump


That contains the answer to your questione. The Na + /K + pump is what you need to learn about.
Reply:not necessarily because some ezymes are denatured by higH pH

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