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The following is not an answer to the original question: "Are Gram negative bacteria classified as such because of their negative membrane potential?" but to the questions later in the text. Usually the membrane potential is given for the inner cytosolic part and the extracellular space, for E. Coli it is around -120 mV; see also this article. Due to the ...


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Short answer The distinction between Gram positive (Gram+) and negative bacteria (Gram-) has absolutely nothing to do with membrane potentials; it is all about the Gram staining procedure. Background The Gram staining was named after the Danish bacteriologist Hans Christian Gram, who originally devised it in 1882 (Gram, 1884). Gram staining is a common ...


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Both Na+ and K+ will move according to the electrochemical gradient. Given that K+ leaky channels are ever present, the cell is already around its K+ equilibrium. If you introduce leaky Na+ channel and remove the pumps, eventually the cell will be nothing more than a passive membrane and it will adopt the same concentrations of ions as the extracellular ...



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