The way enzyme helps a substrate to be attacked by reagent effectively is :

enzyme hold the substrate in a suitable position so that it can be attacked by the reagent effectively

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enzyme hold the reagent in a suitable position so that it can be attacked by the substrate effectively

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enzyme react with substrate chemically to convert it into the more reactive form

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none of these

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Solution

The correct option is A enzyme hold the substrate in a suitable position so that it can be attacked by the reagent effectively
Enzymes hold the substrate in a suitable position. So that it can be attacked by the reagent effectively.
$E n z y m e + S u b s t r a t e ⟶ E n z y m e r e c o n f i g u r e ⟶ P r o d u c t + u n b i n d e n z y m e$
Enzyme reconfigure means enzyme changes its shape slightly as substrate binds.

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Similar questions

Q. Assertion :In presence of enzyme, substrate molecule can be attacked by the reagent effectively. Reason: Active sites of enzymes hold the substrate molecule in a suitable position.

How do enzymes help a substrate to be attacked by the reagent effectively?

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct answer out of the following choices.
(a) Assertion and reason both are correct statements and reason explains the assertion.
(b) Both assertion and reason are wrong statements.
(c) Assertion is correct statement and reason is wrong statement.
(d) Assertion is wrong statement and reason is correct statement.
(e) Assertion and reason both are correct statements but reason does not explain assertion.
Assertion (A) In presence of enzyme, substrate molecule can be attacked by the reagent effectively.
Reason (R) Active sites of enzymes hold the substrate molecule in a suitable position.

Q. Assertion : Enzymes have active sites that hold substrate molecule for a chemical reaction
Reason : Drugs compete with natural substrate by attaching covalently to the active site of enzyme

Q. Nucleophilic part of the reagent attacks the substrate

C H_{3} C H_{2} C O C H_{3}

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