contestada

which is a true statement about enzyme activity pH and enzyme action?

A. All enzymes work best at a neutral pH

B. Adding more acid does not affect the rate of activity of an enzyme

C. Enzymes function only in a pH range of 4.0 to 5.5

D. The activity of an enzyme is affected by pH

Respuesta :

answer must be D. A, B and C cannot be true as different enzymes have different optimum pH. For instance the enzyme pepsin in the stomach works best at pH 2 , the enzyme trypsin works best at pH 8 while amylase works best at pH 7.

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