Assertion :Enzymes have active sites and substrates have reactive sites on their surface respectively. Reason: Active and reactive sites push the enzyme and substrate molecules away from each other.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is C Assertion is correct but Reason is incorrect.
Enzymes and substrates have certain portions of their chemical structure that act help them recognize each other thus giving the enzyme its substrate-specific nature. These sites form a configuration in space which aligns the enzyme and substrate for the reaction to happen instead of pushing them away.
The correct answer is 'assertion is correct but the reason is incorrect'.

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Similar questions

Assertion and Reason
In the following questions a statement of assertion (A) followed by a statement reason (R) is given. Choose the correct answer out of the following choice..
(a) Assertion and reason both are correct statements but reason does not explain assertion.
(b) Assertion and reason both are correct and reason explains asssWon.
(c) Both assertion and reason are Wrong statements.
(d) Assertion is correct statement reason is wrong statement.
(e) Assertion is wrong statement reason is correct statement.

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

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.

Assertion (A) Competitive inhibitors compete with natural substrate for their attachment on the active sites of enzymes.
Reason (R) In competitive inhibition, inhibitor binds to the allosteric site of the enzyme.

Assertion (A) Rate constant determined from Arrhenius equation are fairly accurate for simple as well as complex molecules.

Reason (R) Reactant molecules undergo chemical change irrespective of their orientation during collision.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

Assertion (A) All collision of reactant molecules lead to product formation.

Reason (R) Only those collisions in which molecules have correct orientation and sufficient kinetic energy lead to compound formation.

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