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Unit 4 · Biological Basis of Behaviour Psychology · June 2020 · 25 Sep 2020, Shift 1

Match List I with List II

List IList II
A. EfficacyI. Response activated when drugs bind with a receptor
B. ToleranceII. Repeated exposure with less activation of receptors
C. DownregulationIII. Compensatory reduction in receptor availability
D. WithdrawalIV. Unpleasant physiological responses

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Correct answer: B. A-I, B-II, C-III, D-IV

Explanation

Efficacy: response when a drug binds; tolerance: less activation with repeated exposure; down-regulation: compensatory fall in receptors; withdrawal: unpleasant physiological reactions.

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