Agonists bind to and antagonists bind to question 18 options:

Agonists bind to receptors and activates them and antagonists bind to receptors without activating them.

Not activating receptors make antagonists consequently preventing the binding of other agonists as opposed to an agonist, which, when binds to a receptor it activates the receptor to produce a biological response in the body.

the best answer is b.

hope this : )

"the importance of the japanese economy and security is far greater than that of the asian values"