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590+ Biopharmaceutics and Pharmacokinetics Solved MCQs

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Bachelor of Pharmacy (B. Pharma) .

Chapters

Chapter: Drug Distribution
251.

Drug distribution in an organ depends on…………

A. Organ size
B. Perfusion rate
C. Partition Coefficient
D. all of the above
Answer» D. all of the above
252.

Protein binding of acidic drugs decreased in………..

A. Trauma
B. Surgery
C. Hepatic Cirrhosis
D. Burns
Answer» A. Trauma
253.

Which one of the following sentences will be the actual definition of distribution?

A. Transfer of drug from the administration dosage to surrounding fluid
B. Transfer of drug from the surrounding the fluid to the blood
C. Transfer of the drug from the oral cavity to the intestine
D. Reversible tr
Answer» D. Reversible tr
254.

What should be the molecular weight of the drug molecules so that they can easily pass through the membrane?

A. 600-800 Dalton
B. 500-600 Dalton
C. 300-500 Dalton
D. 200-400 Dalton
Answer» B. 500-600 Dalton
255.

Which type of drug cannot enter the cell membrane in the below picture?

A. Ionized drug
B. Unionized drug
C. Hydrolyzed drug
D. Unhydrated drug
Answer» A. Ionized drug
256.

Which drugs cannot pass the Capillary endothelial Barrier?

A. Molecular size less than 600 Dalton
B. Drugs bound to blood components
C. Drugs bound to a chemical moiety
D. All drugs can pass
Answer» B. Drugs bound to blood components
257.

Which of the following drug cannot pass through the plasma membrane barrier?

A. Drug size less than 50 Dalton
B. Lipophilic drugs 50-600 Dalton
C. Polar or ionized drugs of size greater than 50 Dalton
D. Drug size more than 600 Dalton
Answer» D. Drug size more than 600 Dalton
258.

Which cell make up the blood-brain barrier?

A. Squamous epithelium cells
B. Fat cells
C. Red blood cell
D. Endothelial cells
Answer» D. Endothelial cells
259.

What is the name of the specialized cells that support the blood-brain barrier tissue?

A. Astrocytes
B. Dendrites
C. Fat cells
D. Endothelial cells
Answer» A. Astrocytes
260.

Why dopamine cannot be administered for the disease Parkinsonism?

A. Don’t have a medicine
B. It is not the medicine
C. Cannot cross the blood-brain barrier
D. Forms aggregate and thus cannot cross the BBB
Answer» C. Cannot cross the blood-brain barrier
261.

Which one of these is not an approach to make the drug cross the blood-brain barrier?

A. Using permeation enhancers
B. Osmotic disruption of the blood-brain barrier
C. Use of highly lipophilic drug only
D. Use of drug carriers to cross the BBB
Answer» C. Use of highly lipophilic drug only
262.

Which drugs can easily pass the Placental barrier?

A. Drugs having a molecular weight less than 1000 Dalton
B. Moderate to high lipid solubility
C. Drugs having a molecular weight less than 1000 Dalton and moderate to high lipid solubility, analgesics, and antibiotics
D. Analgesics, antibiotics, etc
Answer» C. Drugs having a molecular weight less than 1000 Dalton and moderate to high lipid solubility, analgesics, and antibiotics
263.

What is the function of the blood-testis barrier?

A. Restricts the passage of drug to the testis
B. Restricts the passage of drug to sperms
C. Restricts the passage of drugs to spermatocytes
D. Restricts the passage of drugs to spermatocytes and spermatids
Answer» D. Restricts the passage of drugs to spermatocytes and spermatids
264.

What is the perfusion rate?

A. The total volume of blood
B. The volume of blood that flows through the heart per unit time
C. The volume of blood that flows per unit time per unit volume of tissue
D. The volume of tissue that flows per unit time per unit area of a blood vessel
Answer» C. The volume of blood that flows per unit time per unit volume of tissue
265.

Who has more intracellular and extracellular water more in their body?

A. Aged
B. Adults Of age more than 20
C. Infants
D. Children at puberty
Answer» C. Infants
266.

Who has higher fat content?

A. Adults of age above 70
B. Adults of age more than 20
C. Infants and elders
D. Children at puberty
Answer» C. Infants and elders
267.

Who has poorly developed BBB?

A. Infants
B. Adults Of age more than 20
C. Aged
D. Children at puberty
Answer» A. Infants
268.

During pregnancy, drug distribution is more. Which of the following sentences describe the given fact better?

A. The baby needs more drug
B. The mother needs more drug due to high metabolism
C. The surface area increases in the mother’s body due to the presence of uterus, placenta, and foetus. Thus more area for distribution of drugs
D. The growth of the uterus, placenta, and foetus increases the volume thus increasing distribution. And even the baby forms a separate compartment for a drug to get distributed
Answer» D. The growth of the uterus, placenta, and foetus increases the volume thus increasing distribution. And even the baby forms a separate compartment for a drug to get distributed
269.

What happens when an obese person is given with a lipophilic drug?

A. Drug aggregation will begin
B. He cannot absorb lipophilic drugs
C. High adipose tissue take up most of the lipophilic drug
D. A large amount of drug is needed as the person’s weight is more
Answer» C. High adipose tissue take up most of the lipophilic drug
270.

What is the consequence of diet high in fats?

A. The patient can’t be given with acidic drugs
B. The patient can’t be given with basic drugs
C. The basic drugs will aggregate and become poisonous for him
D. The high fatty acid level affect the binding of acidic drugs
Answer» D. The high fatty acid level affect the binding of acidic drugs
271.

The extent to which a drug is distributed is a tissue depends upon ___________ and _____________

A. The concentration of a drug, tissue/blood partition coefficient of drug
B. Tissue volume, tissue/blood partition coefficient of drug
C. Tissue surface area, tissue/blood partition coefficient of drug
D. Blood density upon the tissue, tissue/blood partition coefficient of drug
Answer» B. Tissue volume, tissue/blood partition coefficient of drug
272.

Which one of the following has a high perfusion rate?

A. Fat
B. Muscle and skin
C. Lungs and kidney
D. Bone
Answer» C. Lungs and kidney
273.

Which one of the following has very low perfusion rate?

A. Fat and bone
B. Muscle and skin
C. Lungs and kidney
D. Liver and Heart
Answer» A. Fat and bone
274.

Infants have high albumin content.

A. True
B. False
C. none
D. all
Answer» B. False
275.

Disease state of a patient can influence drug distribution across the body.

A. True
B. False
C. none
D. all
Answer» A. True
276.

In meningitis and encephalitis polar antibiotics gain access to BBB which don’t happen to a healthy person.

A. True
B. False
C. none
D. all
Answer» A. True
277.

What reasons make tissue-drug binding important for drug distribution?

A. Increases the volume of distribution of drugs and results in localization of drug at a specific site
B. Increases the volume of distribution of drugs
C. Results in localization of drugs at a tissue specific site
D. Increases in absorption from the tissue due to concentration increasing
Answer» A. Increases the volume of distribution of drugs and results in localization of drug at a specific site
278.

Following is the order in decreasing order of drug binding to the extravascular tissue. Which one is the correct order?

A. Liver > kidney > muscle > lung
B. Liver > muscle > lung > kidney
C. Liver > muscle > kidney > lung
D. Liver > kidney > lung > muscle
Answer» D. Liver > kidney > lung > muscle
279.

What is the relation between halogenated hydrocarbon and liver?

A. Halogenated hydrocarbon is a drug for liver problems
B. Halogenated hydrocarbon is nutrition for liver
C. Halogenated hydrocarbon causes hepatotoxicity
D. Halogenated hydrocarbon forms the bile juices in liver
Answer» C. Halogenated hydrocarbon causes hepatotoxicity
280.

Which drugs accumulate in liver?

A. Acidic drugs like imipramine
B. Basic drugs like imipramine
C. Halogenated hydrocarbons
D. Chloroquinine
Answer» B. Basic drugs like imipramine
281.

Which metals get accumulated in kidney?

A. Mercury, cadmium, lead
B. Mercury, cadmium, iron
C. Mercury, lanthanum, lead
D. Mercury, cadmium, fluoride ions
Answer» A. Mercury, cadmium, lead
282.

Which of the following drugs accumulate in skin?

A. Acidic drugs like imipramine
B. Basic drugs like imipramine
C. Halogenated hydrocarbons
D. Chloroquine
Answer» D. Chloroquine
283.

Which of the following drugs are responsible for retinopathy?

A. Acidic drugs like imipramine
B. Basic drugs like imipramine
C. Halogenated hydrocarbons
D. Chloroquinine
Answer» D. Chloroquinine
284.

Which drugs deposit in hair shafts?

A. Arsenicals
B. Tetracycline
C. Halogenated hydrocarbons
D. Lipophilic drug
Answer» A. Arsenicals
285.

Which drug causes brown yellow discoloration of infant’s teeth?

A. Arsenicals
B. Tetracycline
C. Halogenated hydrocarbons
D. Lipophilic drug
Answer» B. Tetracycline
286.

Which drug accumulate in adipose tissue?

A. Arsenicals
B. Tetracycline
C. Halogenated hydrocarbons
D. Lipophilic drug
Answer» D. Lipophilic drug
287.

Which drugs results in distortion of double stranded DNA structure?

A. Arsenicals
B. Quinacrine
C. Halogenated hydrocarbons
D. Lipophilic drug
Answer» B. Quinacrine
288.

In equation X=Vd C, what does Vd denotes?

A. Density
B. Volume of blood
C. Volume of body
D. The volume of the body fluid in which the drug is getting dissolved
Answer» D. The volume of the body fluid in which the drug is getting dissolved
289.

The amount of drug in the body is directly proportional to the concentration of the drug in plasma.

A. True
B. False
C. none
D. all
Answer» A. True
290.

The body water has 3 distinct compartments. Which one of these is not one of the compartments?

A. Vascular fluid
B. Intracellular fluid
C. Extracellular fluid
D. Between the tissue layers
Answer» D. Between the tissue layers
291.

How can you determine the extracellular fluid volume?

A. Evans blue
B. Na+
C. D20
D. Tritiated water
Answer» B. Na+
292.

How a patient’s plasma volume can be determined?

A. Evans blue
B. Na+
C. D20
D. Tritiated water
Answer» A. Evans blue
293.

The total body water volume can be determined by using high molecular weight dyes.

A. True
B. False
C. none
D. all
Answer» B. False
294.

How will you determine the intracellular fluid volume?

A. Evans blue
B. Na+
C. Difference between total body water and ECF volume
D. Tritiated water
Answer» C. Difference between total body water and ECF volume
295.

What will be the apparent volume of distribution of warfarin?

A. The apparent volume of distribution is less than the true volume of distribution
B. The apparent volume of distribution is more than the true volume of distribution
C. The apparent volume of distribution is equal to the true volume of distribution
D. Warfarin is not a medicine
Answer» A. The apparent volume of distribution is less than the true volume of distribution
296.

What will bet the apparent volume of distribution of drugs which binds selectively to extravascular tissues?

A. The apparent volume of distribution is less than the true volume of distribution
B. The apparent volume of distribution is more than the true volume of distribution
C. The apparent volume of distribution is equal to the true volume of distribution
D. The apparent volume of distribution is equal to the volume of extravascular tissues
Answer» B. The apparent volume of distribution is more than the true volume of distribution
297.

Factors altering the binding of the drug to the blood increases the volume of distribution of the drug and the factors that influence drug binding to the extravascular component decreases the volume of distribution.

A. True
B. False
C. none
D. all
Answer» A. True
Chapter: Protein Binding of Drugs
298.

Which one of the following bonds is not generally a bond through which a drug will bind in our body?

A. Hydrogen bond
B. Hydrophobic bond
C. Ionic bond
D. Covalent bond
Answer» D. Covalent bond
299.

Binding of drugs falls into 2 components those are _______________

A. Binding of drugs to blood components and to extravascular tissue
B. Binding of drugs to blood components and to other cells
C. Binding of drugs to cells and blood cells
D. Binding of drugs to blood components to bones and cells
Answer» A. Binding of drugs to blood components and to extravascular tissue
300.

Which one of the following is the correct order of the drugs binding to various plasma protein?

A. Albumin > alpha-1 acid glycoprotein > globulins > lipoproteins
B. Albumin > globulins > lipoproteins > alpha-1 acid glycoprotein
C. Albumin > alpha-1 acid glycoprotein > lipoproteins > globulins
D. Albumin > lipoproteins > globulins > alpha-1 acid glycoprotein
Answer» C. Albumin > alpha-1 acid glycoprotein > lipoproteins > globulins

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