General principles of pharmacology

 (1) GENERAL PRINCIPLES OF PHARMACOLOGY

PART I PHARMACOKINETICS 
001. Pharmacokinetics is: 
a) The study of biological and therapeutic effects of drugs 
b) The study of absorption, distribution, metabolism and excretion of drugs 
c) The study of mechanisms of drug action 
d) The study of methods of new drug development 
002. What does “pharmacokinetics” include? 
a) Complications of drug therapy 
b) Drug biotransformation in the organism 
c) Influence of drugs on metabolism processes 
d) Influence of drugs on genes 
002. What does “pharmacokinetics” include? 
a) Pharmacological effects of drugs 
b) Unwanted effects of drugs 
c) Chemical structure of a medicinal agent 
d) Distribution of drugs in the organism 
003. What does “pharmacokinetics” include? 
a) Localization of drug action 
b) Mechanisms of drug action 
c) Excretion of substances 
d) Interaction of substances 
004. The main mechanism of most drugs absorption in GI tract is: 
a) Active transport (carrier-mediated diffusion) 
b) Filtration (aqueous diffusion) 
c) Endocytosis and exocytosis 
d) Passive diffusion (lipid diffusion) 
005. What kind of substances can’t permeate membranes by passive diffusion? 
a) Lipid-soluble 
b) Non-ionized substances 
c) Hydrophobic substances 
d) Hydrophilic substances 
006. A hydrophilic medicinal agent has the following property: 
a) Low ability to penetrate through the cell membrane lipids 
b) Penetrate through membranes by means of endocytosis 
c) Easy permeation through the blood-brain barrier 
d) High reabsorption in renal tubules 
007. What is implied by «active transport»? 
a) Transport of drugs trough a membrane by means of diffusion 
b) Transport without energy consumption 
c) Engulf of drug by a cell membrane with a new vesicle formation 
d) Transport against concentration gradient 
008. What does the term “bioavailability” mean? 
a) Plasma protein binding degree of substance 
b) Permeability through the brain-blood barrier 
c) Fraction of an uncharged drug reaching the systemic circulation following any route administration 
d) Amount of a substance in urine relative to the initial doze 
009. The reasons determing bioavailability are: 
a) Rheological parameters of blood 
b) Amount of a substance obtained orally and quantity of intakes 
c) Extent of absorption and hepatic first-pass effect 
d) Glomerular filtration rate 
010. Pick out the appropriate alimentary route of administration when passage of drugs through liver is minimized: 
a) Oral 
b) Transdermal 
c) Rectal 
d) Intraduodenal 
011. Which route of drug administration is most likely to lead to the first-pass effect?

b) Oral 
c) Intravenous 
d) Intramuscular 
012. What is characteristic of the oral route? 
a) Fast onset of effect 
b) Absorption depends on GI tract secretion and motor function 
c) A drug reaches the blood passing the liver 
d) The sterilization of medicinal forms is obligatory 
013. Tick the feature of the sublingual route: 
a) Pretty fast absorption 
b) A drug is exposed to gastric secretion 
c) A drug is exposed more prominent liver metabolism 
d) A drug can be administrated in a variety of doses 
014. Pick out the parenteral route of medicinal agent administration: 
a) Rectal 
b) Oral 
c) Sublingual 
d) Inhalation 
015. Parenteral administration: 
a) Cannot be used with unconsciousness patients 
b) Generally results in a less accurate dosage than oral administration 
c) Usually produces a more rapid response than oral administration 
d) Is too slow for emergency use 
016. What is characteristic of the intramuscular route of drug administration? 
a) Only water solutions can be injected 
b) Oily solutions can be injected 
c) Opportunity of hypertonic solution injections 
d) The action develops slower, than at oral administration 
017. Intravenous injections are more suitable for oily solutions: 
a) True 
b) False 
018. Correct statements listing characteristics of a particular route of drug administration include all of the following EXCEPT: 
a) Intravenous administration provides a rapid response 
b) Intramuscular administration requires a sterile technique 
c) Inhalation provides slow access to the general circulation 
d) Subcutaneous administration may cause local irritation 
019. Most of drugs are distributed homogeneously. 
a) True 
b) False 
020. Biological barriers include all except: 
a) Renal tubules 
b) Cell membranes 
c) Capillary walls 
d) Placenta 
021. What is the reason of complicated penetration of some drugs through brain-blood barrier? 
a) High lipid solubility of a drug 
b) Meningitis 
c) Absence of pores in the brain capillary endothelium 
d) High endocytosis degree in a brain capillary 
022. The volume of distribution (Vd) relates: 
a) Single to a daily dose of an administrated drug 
b) An administrated dose to a body weight 
c) An uncharged drug reaching the systemic circulation 
d) The amount of a drug in the body to the concentration of a drug in plasma 
023. For the calculation of the volume of distribution (Vd) one must take into account: 
a) Concentration of a substance in plasma
b) Concentration of substance in urine 
c) Therapeutical width of drug action 
d) A daily dose of drug 
024. A small amount of the volume of distribution is common for lipophylic substances easy penetrating through barriers and 
widely distributing in plasma, interstitial and cell fluids:

True 
b) False 
025. The term “biotransformation” includes the following: 
a) Accumulation of substances in a fat tissue 
b) Binding of substances with plasma proteins 
c) Accumulation of substances in a tissue 
d) Process of physicochemical and biochemical alteration of a drug in the body 
026. Biotransformation of the drugs is to render them: 
a) Less ionized 
b) More pharmacologically active 
c) More lipid soluble 
d) Less lipid soluble 
027. Tick the drug type for which microsomal oxidation is the most prominent: 
a) Lipid soluble 
b) Water soluble 
c) Low molecular weight 
d) High molecular weight 
028. Pick out the right statement: 
a) Microsomal oxidation always results in inactivation of a compound 
b) Microsomal oxidation results in a decrease of compound toxicity 
c) Microsomal oxidation results in an increase of ionization and water solubility of a drug 
d) Microsomal oxidation results in an increase of lipid solubility of a drug thus its excretion from the organism is facilitated 
029. Stimulation of liver microsomal enzymes can: 
a) Require the dose increase of some drugs 
b) Require the dose decrease of some drugs 
c) Prolong the duration of the action of a drug 
d) Intensify the unwanted reaction of a drug 
030. Metabolic transformation (phase 1) is: 
a) Acetylation and methylation of substances 
b) Transformation of substances due to oxidation, reduction or hydrolysis 
c) Glucuronide formation 
d) Binding to plasma proteins 
031. Biotransformation of a medicinal substance results in: 
a) Faster urinary excretion 
b) Slower urinary excretion 
c) Easier distribution in organism 
d) Higher binding to membranes 
032. Conjugation is: 
a) Process of drug reduction by special enzymes 
b) Process of drug oxidation by special oxidases 
c) Coupling of a drug with an endogenous substrate 
d) Solubilization in lipids 
033. Which of the following processes proceeds in the second phase of biotransformation? 
a) Acetylation 
b) Reduction 
c) Oxidation 
d) Hydrolysis 
034. Conjugation of a drug includes the following EXCEPT: 
a) Glucoronidation 
b) Sulfate formation 
c) Hydrolysis 
d) Methylation 
035. Metabolic transformation and conjugation usually results in an increase of a substance biological activity: 
a) True 
b) False 
036. In case of liver disorders accompanied by a decline in microsomal enzyme activity the duration of action of some drugs 
is: 
a) Decreased 
b) Enlarged 
c) Remained unchanged 
d) Changed insignificantly

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