Drug Delivery Systems: Online Learning Quizzes for Biopharmaceutics Students

Question 1

Which of the following factors has no effect on drug absorption from the gastrointestinal tract?

Accepted Answer

Intravenous administration

Answer

Gastric pH

Answer

Presence of food

Answer

Particle size of the drug

Question 2

Which drug delivery system is designed to release medication gradually over an extended period?

Accepted Answer

Controlled-release tablets

Answer

Immediate-release injections

Answer

Transdermal patches

Answer

Oral liquids

Question 3

What is the primary function of surfactants in injectable drug formulations?

Accepted Answer

To prevent aggregation

Answer

To increase drug solubility

Answer

To decrease drug stability

Answer

To enhance drug absorption

Question 4

What is the main purpose of a sustained-release drug delivery system?

Accepted Answer

To reduce the frequency of dosing

Answer

To achieve higher peak drug concentrations

Answer

To increase drug bioavailability

Answer

To decrease drug side effects

Question 5

Which of the following is a significant obstacle in the development of targeted drug delivery systems?

Accepted Answer

Lack of specificity

Answer

Low drug loading capacity

Answer

High production costs

Answer

Regulatory challenges

Question 6

Which of the following is NOT a common approach for optimizing drug delivery systems?

Accepted Answer

Accelerating drug metabolism

Answer

Minimizing drug degradation

Answer

Enhancing drug absorption

Answer

Sustaining drug release

Question 7

Which of the following is NOT an essential factor influencing drug delivery?

Accepted Answer

Manufacturing cost of the drug

Answer

Physicochemical properties of the drug

Answer

Physiological characteristics of the patient

Answer

Route of administration

Question 8

The transdermal route of drug administration involves delivering drugs:

Accepted Answer

Through the skin

Answer

Via injection

Answer

Orally

Answer

Rectally

Question 9

The primary purpose of controlled-release drug delivery systems is to:

Accepted Answer

Sustain drug release over an extended period

Answer

Increase drug bioavailability

Answer

Reduce side effects

Answer

Improve patient compliance

Question 10

Which of the following is a major challenge often encountered when designing drug delivery systems for poorly water-soluble drugs?

Accepted Answer

Dissolution enhancement

Answer

pH adjustment

Answer

Particle size reduction

Answer

Excipient selection

Question 11

Which drug delivery route is preferred for rapid onset of action?

Accepted Answer

Intravenous

Answer

Oral

Answer

Transdermal

Answer

Rectal

Question 12

What is the primary mechanism of drug absorption through intact skin?

Accepted Answer

Passive diffusion

Answer

Active transport

Answer

Iontophoresis

Answer

Endocytosis

Question 13

Which of the following is NOT a type of modified-release drug delivery system?

Accepted Answer

Conventional (immediate-release) systems

Answer

Reservoir systems

Answer

Matrix systems

Answer

Osmotic systems

Question 14

What is the primary purpose of using a bioadhesive polymer in drug delivery?

Accepted Answer

To improve drug absorption and retention at the site of application

Answer

To increase drug solubility

Answer

To enhance drug stability

Answer

To decrease side effects

Question 15

What is the main advantage of employing a mucoadhesive drug delivery system?

Accepted Answer

Prolonged drug retention at the site of application

Answer

Increased drug absorption

Answer

Improved patient compliance

Answer

Reduced side effects

Question 16

Which of the following is NOT a primary factor influencing drug delivery?

Accepted Answer

Patient's gender

Answer

Route of administration

Answer

Drug's solubility

Answer

Drug's molecular weight

Question 17

Sustained-release drug delivery systems aim to:

Accepted Answer

Maintain drug concentration within a therapeutic range for an extended period

Answer

Reduce side effects

Answer

Target drug delivery to specific tissues

Answer

Enhance drug bioavailability

Question 18

Which of the following is a potential limitation of transdermal drug delivery?

Accepted Answer

Low permeability of some drugs through the skin

Answer

Improved patient adherence

Answer

Controlled drug release

Answer

Avoidance of hepatic metabolism

Question 19

Liposomes are versatile drug carriers characterized by:

Accepted Answer

A lipid bilayer structure that encapsulates drugs

Answer

Metallic core for enhanced drug stability

Answer

Magnetic properties for targeted delivery

Answer

Polymeric structure with controlled drug release

Question 20

Biodegradable drug delivery systems:

Accepted Answer

Degrade into non-toxic components over time

Answer

Reduce side effects

Answer

Provide targeted drug delivery

Answer

Enhance drug bioavailability

Question 21

In the United Kingdom, the regulatory agency responsible for approving drug delivery systems is:

Accepted Answer

Medicines and Healthcare products Regulatory Agency (MHRA)

Answer

National Institute for Health and Care Excellence (NICE)

Answer

World Health Organization (WHO)

Question 22

Which mechanism is primarily responsible for oral drug absorption?

Accepted Answer

Passive diffusion

Answer

Active transport

Answer

Pinocytosis

Answer

Facilitated diffusion

Question 23

Which factor does NOT directly influence the rate of drug release from a controlled-release system?

Accepted Answer

Molecular weight of the drug

Answer

Solubility of the drug in the delivery matrix

Answer

Composition of the matrix material

Answer

Surface area of the drug delivery system

Question 24

What is a potential complication associated with parenteral drug delivery?

Accepted Answer

Infection at the injection site

Answer

Skin irritation

Answer

First-pass metabolism

Answer

Drug overdose

Question 25

What does therapeutic drug monitoring involve?

Accepted Answer

Adjusting drug dosage based on individual patient responses and blood levels

Answer

Evaluating the effectiveness of drug therapies in clinical trials

Answer

Developing novel drug delivery systems for specific diseases

Question 26

Which characteristic defines a biodegradable drug delivery system?

Accepted Answer

It gradually breaks down over time, releasing the drug

Answer

It can be administered via injection or implantation

Answer

It is non-toxic and safe for human use

Answer

It enhances the solubility of the drug in the body