Cancer cells are more easily damaged by radiation than normal cells because they are

The bacterium (Clostridium botulinum) that causes botulism is

Humoral immunity is due to

Drugs, shocks and psychotherapy are the treatments of

Read the following statements
$a.$ Heroin, commonly called smack, is obtained by acetylation of morphine.
$b.$ Cocaine is obtained from the latex of Papaver somniferum.
$c.$ Dopamine is excitatory neurotransmitter.
$d.$ Morphine is an effective sedative and pain killer.
Mark the option which includes both correct statement