Basics of Biology

Basic Chemistry For Biology

Why is pH so important to life?

The concentration of hydrogen ions in water influences the chemical reactions of other molecules. An increase in the concentration of electrically charged ions can interfere with or influence the ability of molecules (specifically proteins) to chemically interact. In general, most living systems function at an internal pH close to 7, but biologically active molecules vary in pH levels depending on the molecule and where it functions.


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