Question

What general effects would you expect the following changes to have on the rate of an enzyme-catalyzed reaction for an enzyme that has its maximum activity at body temperature (about37∘C )?

Adding an oxidizing agent, such as hydrogen peroxide

Adding an oxidizing agent, such as hydrogen peroxide

The rate of the reaction increases.

The rate of the reaction decreases or even becomes zero.

The rate of the reaction remains constant.

The rate of the reaction can increase or decrease depending on the enzyme.

Answer 1

answer is option B

The rate of the reaction decreases or even becomes zero.

Oxidizing agent such as hydrogen peroxide are toxic in nature so it denatures the enzyme and hence the amount of active enzyme will decrease and rate of enzyme catlysed reaction will be decreased. on other hand enzyme such as peroxidase converts these peroxides into water and oxygen gas so addition of hydrogen peroxide will cause consumption of peroxiase enzyme in inactivating additional peroxide and hence actual enzyme for desired biological function will be lesser and hence rate of reaction will be decreased or become zero.