Chapter 21, Problem 21.45EP

(a)

Interpretation Introduction

Interpretation: The effect of temperature decrease on the activity of a typical non-digestive human enzyme has to be predicted.

Concept introduction: Most of the enzymes exhibit a narrow maximum activity over a narrow $\text{pH}$.  Variations in this $\text{pH}$ range can affect the enzyme activity.  The $\text{pH}$ at which an enzyme shows maximum activity is known as the optimum $\text{pH}$.  The temperature at which an enzyme shows maximum activity is known as the optimum temperature.  The physiological $\text{pH}$ range is $\text{7}\text{.0}-\text{7}\text{.5}$.

(b)

Interpretation Introduction

Interpretation: The effect of temperature decrease on the activity of a typical non-digestive human enzyme has to be predicted.

Concept introduction: Most of the enzymes exhibit a narrow maximum activity over a narrow $\text{pH}$.  Variations in this $\text{pH}$ range can affect the enzyme activity.  The $\text{pH}$ at which an enzyme shows maximum activity is known as the optimum $\text{pH}$.  The temperature at which an enzyme shows maximum activity is known as the optimum temperature.  The physiological $\text{pH}$ range is $\text{7}\text{.0}-\text{7}\text{.5}$.