Question

Enzymes

1. Briefly describe three factors that could alter the activity of an enzyme.

2. How do you think the optimal temperature for enzymes found in thermophile bacteria living in hot pools differ from that of the enzymes found in your body?

3. How do you think the optimal pH of enzymes in the stomach compares to the optimal pH for enzymes in blood?

4. Take a look around your house and identify household products that work by means of an enzyme. Name the products and indicate how you know they work with an enzyme.

Answer 1

Briefly describe three factors that could alter the activity of an enzyme.

Answer - Following are the factors which affect or alter the activity of the enzyme-

• pH- Extremely low and high pH in most cases, results in loss of activity of the enzyme. The pH at which the enzyme is most active is called optimum pH. Optimum pH is different for the different enzymes.
• Temperature -At low pH enzymes get inactive and at high pH, proteins get denatured.
• Enzyme concentration - Activity increases when more enzyme are present, but after a certain point, there is no effect. Once all the enzymes are bound to substrate then increasing the enzyme concentration will not have an effect on the rate of reaction.

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