Intrinsic activity can not be determined from this graph. It is possible to calculate the efficacy of each of these drugs by careful examination of this graph. A response to a agonist does not need to be linearly proportional to the number of receptors it occupies.
All agonists produce a similar maximum response.
They have an intrinsic activity of 0. They shift the apparent EC50 of an agonist to the right. The effect of a competitive antagonist can be overcome by adding more agonist. All statements are true 7. Intrinsic activities can vary among full agonists.