Question of the Day- 3

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A scientific researcher is classifying some drugs according to their actions on different receptors.

One of these drugs binds to its receptor without producing any action.

This drug should be classified as what?

A-Agonist

B-Antagonist

C-Partial agonist

D-Inverse agonist




Answer

When a drug binds to its receptor, it competes with other substances which normally affect this receptor causing them to be ineffective. This class of drugs is considered antagonists because they block the action of natural and synthetic agonists. Agonists and partial agonists enhance the action of their receptors either totally or partially. Inverse agonists also activate the receptors but they produce an effect opposite to the action of agonists.

The correct answer is B

The winner of the day is Alexander Reyes

A copy of “Repeated USMLE Questions Step 1 by Dr Ray Makar” is emailed to the winner

Congratulations

 







39 thoughts on “Question of the Day- 3”

  1. Thank you

  2. Antagonist

  3. inverse agonist… cz its stabalize so that the basal activity is also diminished

  4. Antagonist

  5. Antagonist

  6. Thank you Imran ullah

  7. Antagonist

  8. Thank you Kabir

  9. Thank you Fardous.

  10. Great explanation, thank you Vijaya.

  11. Thank you Hussaam

  12. Thank you Javeria

  13. Thank you Avinash

  14. Thank you Najib

  15. Thank you Dr Shamshul

  16. Thank you Aishwarya

  17. Thank you Sabiha

  18. Thank you Hammad

  19. Thank you Alexander

  20. Thank you Tonny

  21. B is the correct answer

  22. Antagonist

  23. Antagonist.
    Agonist produces positive effects
    Inverse agonist produce negetive effects
    Partial agonist produce partial poaitive activity
    Only antaginist block the action of receptors so ANTAGONIST is the answer

  25. Answer is inverse agonist… D

  26. Antagonist

  27. Antagonist

  28. Antagonist

  29. B. Antagonist

  30. Antagonist

  31. Antagonist

  32. B) Antagonist

  33. Antagonist

  34. Thank you Dr Akshay Raut

  35. Thank you Dr Sanjaya Shrestha

  36. Antagonist

  37. Antagonist
    ..a neutral antagonist

  38. Thank you Dr Phanindra

  39. Antagonist

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