Question

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.
A. (A) and (R ) both are correct statement but reason does not explain (A)
B. (A) and (R ) both are correct statements and (R ) explains the (A)
C. Both (A) and (R ) are wrong statement
D. (A) is correct statement and (R ) is wrong statement

Answer 1

Correct Answer - D
Chemical messengers are received at the binding sites of receptor and gives message to the cell without entering the cell