Question

In a range of 0-35C,the rate of reaction of an enzyme is propotional to tempreture . Above 35C and below 0C,enzyme activity slows down and eventually stops.explain why?

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Answer 1

Explanation:

Thus too much heat can cause the rate of an enzyme-catalyzed reaction to decrease because the enzyme or substrate becomes denatured and inactive.

Optimum Temperature

Each enzyme has a temperature range in which a maximal rate of reaction is achieved. This maximum is known as the temperature optimum of the enzyme. The optimum temperature for most enzymes is about 98.6 degrees Fahrenheit (37 degrees Celsius). There are also enzymes that work well at lower and higher temperatures. For example, Arctic animals have enzymes adapted to lower optimal temperatures; animals in desert climates have enzymes adapted to higher temperatures. However, enzymes are still proteins, and like all proteins, they begin to break down at temperatures above 104 degrees Fahrenheit. Therefore, the range of enzyme activity is determined by the temperature at which the enzyme begins to activate and the temperature at which the protein begins to decompose.