Select the correct statement

Options

A. Agonists are the substances which inhibit the natural function of receptor site
B. Agonists are the drugs that mimic the natural messenger by switching on the receptor
C. Substrates may bind to active site of enzyme through the variety of interactions such as ionic bonding , H - bonding , Van dar Waal's interaction or dipole - dipole interaction
D. All of these

Answer

D