A change in pH usually produces a change in enzyme activity because:.Select one:a. pH of the environment changes the conformation of the enzyme. b. enzyme activity increases at extreme pH values (either acidic or basic).c. enzyme activity is usually least active below its optimum pH. d. enzyme activity is most active above its optimum temperature.

c. enzyme activity is usually least active below its optimum pH

Explanation:

Enzyme activity depends highly on pH. Enzymes are biological molecules which are proteins and influence the rates of important biochemical reactions in the human body.

Enzymes has a value of pH at which it works most perfectly. This pH value is known as its optimum pH. Above or below this value, the enzyme does not function optimally.

Hence, a change in pH usually produces a change in enzyme activity because enzyme activity is usually least active below its optimum pH

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.