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Pharmacology Exam 1QUESTIONS
WITH ANSWERS 2025/
- The study of drug absorption, distribution, metabolism, and excretion is known as A. pharmacotherapeutics B. pharmacodynamics C. pharmacokinetics D. pharmacy E. posology - ANSWER C
- The medical situation when a particular drug should not be administered is referred to as A. side effect B. adverse effect C. drug allergy D. contraindication E. antagonism - ANSWER D
- An unusual or unexpected drug reaction by an individual is known as A. toxic effect B. antagonism C. idiosyncrasy D. side effect E. drug allergy - ANSWER C
- The proprietary drug name supplied by a pharmaceutical company is also referred to as the A. generic name B. over-the-counter name C. trade name D. chemical name E. none of these - ANSWER C
- The time from drug administration to the first observable drug effect is known as the A. duration of action B. onset of action
C. ceiling effect D. maximal response E. ceiling effect - ANSWER B
- A drug that has the potential for abuse and is regulated by the Drug Enforcement Agency is classified as a A. poison B. OTC drug C. prescription drug D. controlled substance E. nonproprietary drug - ANSWER D
- Select the term below that relates to the amount of drug administered to produce a therapeutic effect. A. posology B. toxicology C. pharmacodynamics D. pharmacotherapeutics E. pharmacy - ANSWER A
- A medication that does not require a physician's service to obtain is referred to as A. trade B. nonproprietary C. nonprescription D. brand E. generic - ANSWER C
- Which of the following could be categorized as an adverse reaction? A. idiosyncrasy B. drug allergy C. teratogenicity D. carcinogenicity E. all of these - ANSWER E
- The time a drug continues to produce its effect is its A. ED
- When a drug increases the rate of drug metabolism of other drugs, the process is termed A. first-pass metabolism B. enzyme induction C. enzyme inhibition D. enterohepatic cycling E. microsomal inhibition - ANSWER B
- The rate of drug absorption would be increased by which of the following? A. drug ionization B. water solubility C. positively charged drug D. negatively charged drug E. lipid solubility - ANSWER E
- Which factor of individual variation is dependent upon the patient's attitude toward treatment? A. weight B. age C. genetic variation D. placebo effect E. gender - ANSWER D
- Which FDA pregnancy category would appear to be the safest for a developing fetus? A. Category A B. Category B C. Category C D. Category D E. Category X - ANSWER A
- A 45-year-old female shop assistant is treated for heartburn with omeprazole. She notes that the effect of a dose of omeprazole lasts much longer than that of a dose of the antacid drug calcium carbonate she had previously taken. The active metabolite of omeprazole binds covalently and irreversibly to a molecular structure involved in releasing protons into the gastric juice. Drugs that modify their target structures through this mechanism are called suicide substrates.
orphan drugs. protein drugs. competitive antagonists. enantiomers. - ANSWER A
- A 36-year-old male has been diagnosed with chronic myeloid leukemia. His oncologist discusses treatment options with him. The patient is glad to hear that novel anticancer drugs used to treat chronic myeloid leukemia have a much better risk-benefit ratio than older ones, due to their improved selectivity. A major determinant for the selectivity of a given drug is A) its target receptor ligand affinity. B) its target receptor cell-type distribution. C) its ionic interactions. D) its hydrogen bonding. E) its intrinsic activity. - ANSWER B
- A 56-year-old man with chest pain is diagnosed with stable angina and treated with several drugs including nitroglycerin. Every day he has to discontinue nitroglycerin for some hours to re- establish reactivity of his body to the drug. The clinical observation of a rapidly decreasing response to nitroglycerin after administration of just a few doses is called idiosyncrasy. tachyphylaxis. heterologous desensitization. refractoriness. receptor downregulation. - ANSWER B
- Prolonged receptor stimulation during chronic drug therapy may induce cells to endocytose and sequester drug receptors in endocytic vesicles. This molecular mechanism is called A) tachyphylaxis. B) inactivation. C) desensitization. D) downregulation. E) refractoriness. - ANSWER D A 16-year-old female with a history of goiter is admitted with fever, profuse sweating, tachyarrhythmia, hypertension, abdominal pain, and anxiety. Based on a working diagnosis of thyrotoxicosis, she is started on a beta-adrenoceptor antagonist that has a very short half-life.
- Metoprolol is classified as a(n) A. alpha-blocker B. nonselective beta-blocker C. selective beta-1 blocker D. adrenergic neuronal blocker E. selective beta-2 blocker - ANSWER C
- The mechanism of action of methyldopa is A. increased release of NE from adrenergic nerve ending B. alpha-1 receptor blocker C. beta-1 receptor blocker D. formation of a false transmitter in adrenergic nerve ending E. none of these - ANSWER D
- The drug of choice to treat acute allergic reactions is A. norepinephrine B. phenylephrine C. pseudoephedrine D. epinephrine E. propranolol - ANSWER D
- Which of the following are actions of nonselective beta-adrenergic blocking drugs? A. decreasing heart rate B. decreasing force of myocardial contraction C. vasoconstriction of skeletal muscle blood vessels D. lowering of blood pressure E. all of these - ANSWER E
- The actions of epinephrine (EPI) include which of the following? A. bronchodilation B. vasoconstriction C. relaxation of uterus D. increased heart rate E. all of these - ANSWER E
- Parasympathetic receptors located on the membranes of the internal organs are classified as
A. alpha- B. nicotinic-neural (Nn) C. nicotinic-muscle (Nm) D. muscarinic E. ganglionic - ANSWER D
- Select the pharmacologic effect produced by cholinergic drugs. A. increased heart rate B. increased gastrointestinal motility C. decreased urination D. pupillary dilation E. bronchodilation - ANSWER B
- Physostigmine (Eserine ) is classified as a(n) A. direct-acting cholinergic drug B. reversible acetylcholinesterase inhibitor C. irreversible acetylcholinesterase inhibitor D. anticholinergic drug E. ganglionic blocker - ANSWER B
- Symptoms of cholinergic drug overdosage include A. slow pulse rate B. increased urination C. diarrhea D. sweating E. all of these - ANSWER E
- Anticholinergic effects include all of the following except A. bronchodilation B. increased heart rate C. increased gastrointestinal activity D. decreased respiratory secretions E. dry mouth - ANSWER C
- The antidote for atropine poisoning is A. scopolamine
B. inhibit or reduce activity within the spinal cord (intraneuronal), interrupting the central stimulus to muscle contraction C. can only be given parenterally D. cause systemic release of histamine, leading to hypotension E. counteract the effect of botulinumtoxin B - ANSWER B
- Skeletal muscle relaxants may alter control of respiration because A. the diaphragm is a skeletal muscle B. succinylcholine stimulates the respiratory centers in the brain C. like dantrolene, all muscle relaxants inhibit the action of norepinephrine at the neuromuscular junction D. relaxation of the muscles in the lower extremities pulls blood away from the lungs E. all skeletal muscle relaxants interfere with calcium ion storage in the muscle - ANSWER A
- Select the drug or condition(s) that decrease the effects of neuromuscular blockers. A. neomycin B. corticosteroids C. general anesthetics like isoflurane D. alcohol E. myasthenia gravis and spinal cord lesions - ANSWER B
- Which of the following is a way in which skeletal muscles are relaxed? A. blockage of conduction in the spinal cord B. inhibiting nerve transmission C. blockage of the Nm receptors D. decreasing ACH in the neuromuscular junction E. all of these - ANSWER E
- Select reasons for using muscle relaxants during surgical or diagnostic procedures. A. reduce muscle tear B. decrease body temperature C. potentiate vasodilators D. increase muscle tone E. depress respiration - ANSWER A
- Which of the following is NOT a potential adverse effect of peripherally acting skeletal muscle relaxants? A. difficulty swallowing (dysphagia) B. skeletal muscle weakness C. decreased respiration D. bronchospasm E. muscle fasciculations - ANSWER C
- In the presynaptic terminal of neuronal cells, the immediate trigger to release a neurotransmitter from synaptic vesicles into the synaptic cleft is A) a drop in cytosolic Ca2+. B) a drop in cytosolic K+. C) a rise in cytosolic Ca2+. D) a drop in cytosolic Mg2+. E) a rise in cytosolic K+. F) a rise in cytosolic Mg2+. - ANSWER C
- A 17-year-old girl with suspected intrinsic asthma but nearly normal results on spirometry and flow volume testing takes a methacholine provocative test. The mechanism of action of methacholine most closely resembles that of hemicholinium. acetylcholine. edrophonium. succinylcholine. neostigmine. - ANSWER B
- The muscarinic receptor that couples to G proteins responsible for adenylyl cyclase inhibition and plays a key role in cholinergic input to the heart is classified as muscarinic-M1 receptor. muscarinic-M2 receptor. muscarinic-M3 receptor. muscarinic-M4 receptor. muscarinic-M5 receptor. - ANSWER B
- A 25-year old female presents with delirium, hyperthermia, and symptoms of central anticholinergic intoxication. She has attended a ìwitches' conventî and ingested some herbal extracts including fruits of the species ìAtropa belladonna.î As one component of her treatment, she receives a dose of physostigmine.
- Which of the following drugs has a recognized medical therapy and does not interact with opioid receptors? A. heroin B. codeine C. methadone D. acetaminophen - ANSWER D
- All opioid analgesics are associated with which of the following? A. reversal of respiratory depression from barbiturates B. use only for the relief of acute pain C. cough suppression alone or in combination with other analgesics over-the-counter D. tolerance develops to the analgesic response E. drug of choice in treating biliary obstruction - ANSWER D
- Fentanyl is an opioid analgesic that A. can be used for relief of cancer pain B. has many formulations (lozenge, film) because it is used routinely in dental surgery C. induces neuropathic pain D. primarily works on peripheral nerve endings rather than higher centers E. does not have a black box warning because of its low addiction potential - ANSWER A
- Sharp pain is transmitted through which type of nerve fibers? A. unmyelinated B. myelinated A-delta C. CTZ D. C fibers E. mu fibers in the intestine - ANSWER B
- Opioid drugs are derived from which of the following? A. poppy B. opium C. chemical synthesis D. alkaloids E. all of these - ANSWER E
- Select the adverse effects of opioid analgesics. A. constipation B. polyuria C. convulsions D. mydriasis E. excessive tearing - ANSWER A
- During tolerance to opioid analgesics, the following is happening. A. fewer receptors are available to produce a response B. increased pain by the patient requires greater doses of medication C. the body reacts to removal of the opioid analgesic D. histamine release causes hypotension E. signals from nocieocptors are reduced - ANSWER A
- What is the best reason for using a balanced anesthesia strategy? (LO 18.1) A. producing complementary effects using a few drugs avoids unnecessary intense (deep) CNS depression with one anesthetic to achieve the same effect B. the concentration of volatile anesthetic in the alveoli is balanced against the amount of anesthetic in the blood C. less monitoring of anesthesia is required D. fewer patients experience emergence delirium E. there is less chance of aspirating saliva - ANSWER A
- Why is propofol a drug of choice for induction and maintenance of anesthesia? A. it is a potent analgesic at all doses B. it slowly brings the patient to the stage of surgical anesthesia C. it is a complete anesthetic with a quick onset of action and recovery period uncomplicated by nausea and vomiting D. it is administered by special vaporizer to avoid mask delivery E. its preparation does not require special handling technique - ANSWER C
- Which of the following is NOT correct? A. ketamine causes chloride ions to flow out of the nerve cell by binding to GABA B. propofol binds to the GABA A receptor and enhances hyperpolarization of the neuron C. barbiturates and propofol act on the receptor and directly on the chloride channel D. potent anesthetics enhance GABA A receptor function E. general anesthetics interact with neurotransmitter-gated ion channels - ANSWER A
2.Disadvantages to the use of barbiturate hypnotics include A. development of drug tolerance B. risk of drug dependency C. disruption of normal stages of sleep D. suppression of REM sleep E. all of these statements are true - ANSWER E. all of these statements are true
- The correct statement concerning the use of hypnotic drugs is A. zolpidem binds to the GABAB receptor B. benzodiazepines increase chloride channel opening C. barbiturates block the GABA receptor D. ramelteon is a melatonin antagonist E. flumazenil is a benzodiazepine receptor agonist - ANSWER B. benzodiazepines increase chloride channel opening
- Flurazepam A. is classified as long-acting B. forms active metabolites C. may cause next-day residual effects D. increases chloride ion influx E. all of these statements are true - ANSWER E. all of these statements are true
- Eszopiclone A. is classified as a benzodiazepine B. has a half-life of 1-2 hours C. increases total sleep time D. is used as an antianxiety agent E. is also used as an anticonvulsant - ANSWER C. increases total sleep time
- Zolpidem
A. binds to the benzodiazepine-1 (BZD1) receptor B. is useful as a muscle relaxant C. has a slow onset of action D. is useful as an anticonvulsant E. is chemically classified as a benzodiazepine - ANSWER real answer is Bound to the alpha subunit receptor
- Alcohol has pharmacological effects on which body systems? A. central nervous system B. gastrointestinal system C. renal system D. vascular system E. all of these - ANSWER E. all of these 1.The main pharmacologic effect of the SSRIs is A. increase levels of norepinephrine B. increase levels of serotonin C. decrease levels of norepinephrine D. decrease levels of serotonin E. decrease levels of dopamine - ANSWER B. increase levels of serotonin The pharmacologic effects of TCAs include A. alpha-adrenergic blockade B. antihistaminic C. anticholinergic D. sedation E. all of the above - ANSWER E. all of the above
- The serotonin syndrome is mainly associated with overdosage of A. tricyclic antidepressants B. monoamine oxidase inhibitors C. selective serotonin reuptake inhibitors D. psychomotor stimulants E. lithium - ANSWER E. lithium
E. methamphetamine - ANSWER B. tranylcypromine (MAOI)
- The site of action of diazepam (Valium) to relieve anxiety is the A. spinal cord B. limbic system C. reticular formation D. basal ganglia E. cerebellum - ANSWER B. limbic system
- The antianxiety effect of buspirone (BuSpar) is associated with A. stimulation of DA receptors B. stimulation of serotonin receptors C. blockage of serotonin receptors D. blockade of dopamine receptors E. blockage of GABA receptors - ANSWER C. blockage of serotonin receptors
- Flumazenil (Romazicon) is used to reverse the depressant effects of A. clozapine B. alprazolam (benzodiazepine) C. haloperidol D. chlorpromazine E. thiothixene - ANSWER alprazolam (benzodiazepine)
- What are the main areas at which benzodiazepines exert their effects? A. limbic system B. cerebral cortex C. reticular formation D. spinal cord E. all of these - ANSWER E. all of these
- Symptoms of Parkinsonism would be increased by A. excess levels of acetylcholine B. treatment with some antipsychotic drugs C. decreased levels of dopamine D. drug administration after a high-protein meal E. all of these - ANSWER I had ABC highlighted I think this was a mistake please edit
- The drug classified as a dopamine receptor agonist is A. amantadine B. benztropine C. ropinirole D. entacapone (COMT) E. carbidopa - ANSWER C. ropinirole
- Select the drugs that increase the duration of action of DA and/or the amount of levodopa that enters the brain. A. carbidopa B. tolcapone C. selegiline D. rasagiline E. all of these - ANSWER E. all of these
- In Parkinson's disease, slowed movements are defined as A. rigidity B. bradykinesia C. tremor D. dystonia E. postural instability - ANSWER B. bradykinesia
- Sinemet is the trade name of a drug combination that contains levodopa and A. carbidopa and entacapone B. entacapone C. carbidopa D. selegiline E. amantadine - ANSWER C. carbidopa
- The COMT inhibitor that has been associated with causing liver toxicity is A. ropinirole B. entacapone C. pramipexole D. tolcapone E. benztropine - ANSWER D. tolcapone
