Chemicals of low molecular masses (~100u–500u) and which interact with macromolecular targets and produce a biological response are known as:
  • Drugs
  • Chemotherapy
  • Messenger
  • Receptor
The branch of science that deals with the treatment of diseases using suitable chemicals is known as:
  • Medical science
  • Toxicology
  • Chemotherapy
  • Entomology
Which drug does not fit the category of narcotics?
  • Codein
  • Heroin
  • Morphine
  • Analgin
In the body, message between two neurons and that between neurons to muscles is communicated through certain chemicals. These chemicals are the:
  • Receptor
  • Chemical messengers
  • Cell membrane
  • Binding site
Shape of the receptor gets changed after attachment of:
  • Binding site
  • Messenger
  • Cell membrane
  • Receptor
Drugs that mimic the natural messenger by switching on the receptor are called:
  • Inhibitor
  • Messenger
  • Agonists
  • Antagonists
Drugs which can block the binding site of the enzyme and prevent the binding of substrate, or can inhibit the catalytic activity of the enzyme are called as:
  • Catalytic inhibitors
  • Enzyme inhibitors
  • Chemical inhibitors
  • Enzyme receptors
Which class of drugs share common structural features and often have similar pharmacological activity?
  • Aspirin
  • Paracetamol
  • Caffine
  • Sulphonamides
Drugs that bind to the receptor site and inhibit its natural function are called:
  • Inhibitors
  • Receptor
  • Messenger
  • Antagonists
A broad spectrum antibiotic is:
  • Paracetamol
  • Chloramphenicol
  • Aspirin
  • Penicillin
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