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.