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.

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Solution

Answer (d). The assertion is correct statement reason is the wrong statement

Correct reason: Drug competes with the natural substrate by attaching by weak bonds such as hydrogen bond, van der Weals', interaction and ionic bonding etc., to the active site of the enzyme.

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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) 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.

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) Non-competitive inhibitor inhibits the catalytic activity of enzyme by binding with its active site.
Reason (R) Non-competitive inhibitor changes the shape of the active site in such a way that substrate can't recognise it.

Assertion (A) Sulpha drug contain sulphonamide group.
Reason (R) Salvarsan is a sulpha drug.

Assertion (A) Receptor proteins show selectivity for one chemical messenger over the other.
Reason (R) Chemical messenger binds to the receptor site and inhibits its natural function.

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Answer (d). The assertion is correct statement reason is the wrong statement Correct reason: Drug competes with the natural substrate by attaching by weak bonds such as hydrogen bond, van der Weals', interaction and ionic bonding etc., to the active site of the enzyme.

Answer (d). The assertion is correct statement reason is the wrong statement

Correct reason: Drug competes with the natural substrate by attaching by weak bonds such as hydrogen bond, van der Weals', interaction and ionic bonding etc., to the active site of the enzyme.