Fill in the blanks:
$(i)$ ........ and ......... drugs are effective for the treatment of cancer.
$(ii)$ ............ is responsible for the depletion of ozone in the stratosphere.
$(iii)$ ......... is helpful for patients suffering from $AIDS$.
$(iv)$ The $SI$ unit of electric current is ...... .

What is the scientific explanation for the feeling of depression?

Which of the following statements are correct?
$(i)$ Drugs that mimic natural messenger by switching on the receptor are called agonists.
$(ii)$ Shape of the receptor does not change after attachment of chemical messenger.
$(iii)$ $A$ cationic detergent is formed when stearic acid reacts with polyethylene glycol.
$(iv)$ Seldane is an antihistamine.

Which of the following are synthetic detergents?
$A$) $CH_3(CH_2)_{10}CH_2OH$
$B$) $CH_3(CH_2)_{10}CH_2OSO_3Na$
$C$) $CH_3(CH_2)_{15}N(CH_3)_3Br$
$D$) $(C_{15}H_{31}COO)_3C_3H_5$

Which of the following is an anti-diabetic drug?

The drug used as an antidepressant is: