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Question

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) 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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Solution

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

Correct reason: The chemical messenger binds the receptor site and gives the message to the cell without entering the cell.


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