What kind of human body function requires the concept of Acids or Bases?
Does human body organ has any mechanism or function requires the concept of acids or bases? I mean is there any part of human body needs acids or bases to operate? Or you can give me some website to look up by myself that will also be fine.
Acids and Bases are the key to all redox reactions. All acids have a conjugate base when reduced and all bases have a conjugate acid when oxidized.
The pH in blood changes between the lungs and the other parts of the body. That change in pH causes the oxygen to be bound into the heme in hemoglobin in the lungs and released from hemoglobin in other tissues. It also causes the HCO3- (bicarbonate anion) to be bound in the other tissue to be transported back to the lungs where the change in pH causes the reaction H+ + HCO3- -> H2O + CO2 which you breath out.
There are numerous other examples including just about all nervous system functions that depend on ion flow and relative acidic or basic conditions cause the local charges that create the ions.
Look in any basic biochemistry book and check out the reactions, look for any that have H+ as a component of a reaction. The most classic example would be Oxidative Phosphorylation. In that case the H+ is transported to one side of the inner mitochondrial membrane and an oxygen anion on the other. Where the two come together it generates energy sufficient to make ATP.
In the macro sense, the acid in the stomach is mostly HCL and is normally around pH 1. An acid that strong can and does oxidize many biomolecules which is what is responsible for dissolving the food you eat into the necessary component nutrients that you need.
Part 1 Wonders of the Human Body – BBC Explorations
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