The statement/s which are true about antagonists from the following is/are :-
A. They bind to the receptor site.
B. Get transferred inside the cell for their action.
C. Inhibit the natural communication of the body.
D. Mimic the natural messenger.
Choose the correct answer from the options given below :-
(1) B only     (2) A, C and D     (3) A and B     (4) A and C


Answer: Option 4
Solution: Antagonists are molecules that bind to a receptor site but do not activate it, thereby blocking the natural messenger from binding and activating the receptor.
Option A is true. Antagonists are molecules that bind to a receptor site but do not activate it.
Option B is false. Antagonists do not need to enter the cell to exert their action. They simply bind to the receptor site on the cell surface.
Option C is true. Antagonists inhibit the natural communication of the body by blocking the receptor site and preventing the natural messenger from binding and activating the receptor.
Option D is false. Antagonists do not mimic the natural messenger. Instead, they bind to the receptor site and prevent the natural messenger from binding and activating the receptor.

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