<prompt> Paial agonist can antagonise the effects of a full agonist because it hasHigh affinity but low intrinsic activityNo affinity and low intrinsic activityLow affinity but high intrinsic activityHigh affinity but no intrinsic activity  <response>: Agonists:- Have both affinity and maximal intrin-sic activity. Competitive antagonists :- Have affinity but no intrinsic activity. Paial agonists:- Have affinity and submaximal intrinsic activity. Inverse agonists:- Have affinity but intrinsic activity with a minus sign IA between 0 and -1. Ref:- kd tripathi; pg num:-41,42 