Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.

Assertion : Receptor proteins show selectivity for one chemical messenger over the other.


Reason : Chemical messenger binds to the receptor site and inhibits its natural function.



Receptors which are basically proteins do show selectivity for a certain chemical messenger due to the variety of in the shapes, structures and even their amino acid compositions.


So different receptors interact with different types of chemical messengers


The given reason statement is wrong as chemical messengers process communication b/w cells only do not pay any contribution to inhibition of any natural functions of the receptors.

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