pH answer -
A change in pH can alter the ionization of the R groups of the amino acids. When the charges on the amino acids change, hydrogen bonding within the protein molecule change and the molecule changes shape. The new shape may not be effective.
and the girl below this answered your next questionn
Mercy_x_Me answered Saturday October 22 2005, 5:35 pm: sry I dont know the answer to the first question, but for the second, enzymes speed up cell activity to a pace a lot faster than it is naturally capable of. Without this speeding up, the cells would die because they wouldn't be doing their jobs fast enough. [ Mercy_x_Me's advice column | Ask Mercy_x_Me A Question ]
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