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Maintaining Cellular Conditions: pH and Buffers

By Lou Gross1, Monica Beals1, Susan Harrell1

University of Tennessee Knoxville

This module introduces the chemical reactions related to pH in the context of understanding how acidity can affect both the structure and chemical reactivity of cellular molecules. It is intended for an introductory biology audience.

Listed in Teaching Materials | resource by group Quantitative Biology at Community Colleges

Version 1.0 - published on 15 Feb 2019 doi:10.25334/Q4JM9X - cite this

Licensed under CC Attribution-ShareAlike 4.0 International according to these terms

buffergraph.gif phgraph1.gif phgraph2.gif


Student Introduction: Water is the universal solvent inside all cells and extracellular fluids. Water molecules (H2O) can dissociate into hydroxide ions (OH-) and hydrogen ions (H+). Other molecules or parts of molecules have the ability to either give up hydrogen ions, acids, or accept hydrogen ions, bases. Consequently, we can characterize any aqueous solution by the concentration of positively charged hydrogen ions and negatively charged hydroxide ions.


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