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An enzyme extract when subject to electr...

An enzyme extract when subject to electric field, Sepatrated into two fractions each catalysing the same reaction. These fractions are

A

allsoteric enzyme

B

isoenzyme

C

apoenzyme

D

activator

Text Solution

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The correct Answer is:
To solve the question regarding the enzyme extract that separates into two fractions, each catalyzing the same reaction, we need to analyze the options provided and understand the definitions of each term. ### Step-by-Step Solution: 1. **Understanding the Question**: - We have an enzyme extract that, when subjected to an electric field, separates into two fractions. - Both fractions catalyze the same reaction. 2. **Analyzing the Options**: - **Allosteric Enzyme**: - Allosteric enzymes are regulated by molecules that can activate or inhibit their activity. They do not separate into distinct fractions that catalyze the same reaction. Thus, this option is incorrect. - **Isoenzyme**: - Isoenzymes (or isozymes) are different forms of an enzyme that catalyze the same chemical reaction but may differ in their structure, location, or physiological role. Given that the question states that the fractions catalyze the same reaction, this option is a strong candidate. - **Apoenzyme**: - An apoenzyme is the inactive form of an enzyme that requires a cofactor to become active. This term does not apply to the separation of fractions that both catalyze the same reaction. Therefore, this option is incorrect. - **Activator**: - Activators are molecules that increase the activity of enzymes. They do not refer to fractions of enzymes themselves, so this option is also incorrect. 3. **Conclusion**: - Given the definitions and the context of the question, the correct answer is **isoenzyme**. The two fractions that catalyze the same reaction are known as isoenzymes. ### Final Answer: The fractions are known as **isoenzymes**.
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