Pharmacology and Toxicology MCQs

❂  Which alkaloid inhibits the transport of noradrenaline in very low concentrations? 1) Strychnine  2) Brucine 3) Emetine 4) Reserpine ❂  Which drug inhibits Na+/cl- carriers? 1) Pramlintide 2) Thiazide  3) Octreotide 4) Glargine ❂  Somatostatin is secreted by___________________________. 1) Astrocyte 2) Nerve terminal 3) D-cells of the islets 4) Adrenal gland ❂  Glucagon synthesis occurs by __________________________. 1) A-cell of the islets 2) B-cell of the islets 3) C-cell of the islets 4) D-cell of the islets ❂  If glucagon secretion is high: ____(a)_____ level of glucose concentration will be observed and If glucagon secretion is low:____(b)_____level of glucose concentration will be observed. 1) a- Low ,  b-Normal 2) a- Low ,  b-High 3) a-High,   b-Low 4) a-High,   b-Normal ❂  Low Identify the following correct pairs. Agonist                        ...

❂   _______________factor is responsible for coagulation.   1) Thrombin I   2) Thrombin II   3) Thrombin IV   4) Thrombin IX       ❂  Which drug has both antidyarrhythmic and antiepileptic properties?   1) Verapamil   2) Carbamazepine   3) Phenytoin   4) Propranolol       ❂  All of the following stimulate prolactin secretion except one:   1) Bromocriptine   2) Oestrogen   3) Clozapine   4) Haloperidol       ❂  Select appropriate options:   X: Ethosuximide is the drug of choice for absence seizure   Y: The 5-HT agonist sumatriptan is used in anxiety   Z : The active metabolite of dacarbazine acts as an alkylating agent   V : Bacitracin is responsible for blocking rephosphorylation   T : Phenytoin causes anemia   Options: 1) X,Y, Z True,V&T false   2) X, Z, T true,Y&V false   3) X, Z, T false,Y& T true   4) X,...

❂  Which drug acts on both adrenoceptor and oxytocin receptor?   1) Ergometrine   2) Atosiben   3) Ritodribe   4) Salbutamol       ❂  Angiotensin-2 is _____________.   1) Hecapeptide   2) Octapeptide   3) Decapeptide   4) Tetrapeptide       ❂  Which hypoglycaemic drug is highly bound to plasma proteins?   1) Glibenclamide   2) Glipizide   3) Tolbutamide   4) Pioglitazone       ❂  Hydrochlorothiazide blocks _____________________.   1) NA+ -- K+ Symporter   2) NA+ -- H+ Symporter   3) Na+ -- Cl- Symporter   4) K+ -- Cl- Symporter     ❂  Which antiarrhythmic works by blocking both sodium and potassium channels?   1) Flecainide   2) Tocainide   3) Quinidine   4) Lignocaine       ❂  Which vitamin precursor is ergosterol?   1) Vitamin A   2) Vitamin B12   3) Vitamin D   4) Vit...