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Assignment 1 – Pharmacokinetics and Drug Therapy

Weight: 20% of Final Grade

Pharmacy Assistant – SELC College

Assignment Title

Understanding Pharmacokinetics and Drug Therapy

Assignment Purpose

This major written assignment evaluates students’ understanding of pharmacokinetics and its

application to safe and effective drug therapy. Students will demonstrate foundational

pharmacological knowledge essential for pharmacy practice in British Columbia, including drug

absorption, distribution, metabolism, elimination, and dosing principles.

This assignment assesses theoretical knowledge, clinical reasoning, and professional written

communication.

Instructions

Answer the following questions clearly and thoroughly.

• Each response should be 150–250 words, unless otherwise specified.

• Use clear, professional language appropriate for healthcare settings.

• Provide practical examples where applicable.

• Diagrams or labeled illustrations may be included where appropriate.

• Support explanations with course terminology.Assignment Questions

1. Pharmacokinetics

Describe the four major processes of pharmacokinetics (ADME) and explain their

significance in drug therapy.

2. Transport Across Plasma Membranes

Explain how substances move across plasma membranes, including passive diffusion,

facilitated diffusion, active transport, and endocytosis/exocytosis.

3. Drug Absorption

Discuss key factors affecting drug absorption, including solubility, pH, route of

administration, gastrointestinal motility, and patient-specific factors.

4. Plasma Proteins and Distribution

Explain how plasma proteins influence drug distribution and describe the significance of

drug-protein binding.

5. Physiological Barriers

Explain the importance of the blood–brain barrier, blood–placenta barrier, and blood–

testes barrier in drug therapy.

6. Drug Metabolism

Describe Phase I and Phase II metabolic reactions and explain their role in drug

inactivation or activation.

7. First-Pass Effect

Explain the first-pass effect and discuss its implications for oral medications.

8. Age and Metabolic Enzymes

Compare drug metabolism in pediatric and geriatric populations and explain the clinical

implications.

9. Intermediate Metabolites

Explain how intermediate metabolites may produce stronger or toxic responses.

10. Drug Elimination

Describe renal, hepatic, and alternative routes of drug elimination.

11. Enterohepatic Recirculation

Explain how enterohepatic recirculation affects drug duration and dosing.

12. Half-Life and Duration of Action

Explain the relationship between rate of elimination, plasma half-life (t½), and drug

action duration.

13. Drug Concentrations

Define minimum effective concentration (MEC), minimum toxic concentration (MTC),

and therapeutic range.

14. Dosing Strategies

Differentiate between loading doses and maintenance doses and provide clinical

examples.Marking Rubric

Total: 100 Marks (20% of Final Grade)

Criteria 

Excellent

90–100%

Good

80–89%

Satisfactory

70–79%

Needs

Improvement

Below 70%

Marks

Understanding of

Pharmacokinetic

Concepts (30 marks)

Comprehensive, accurate,

and detailed understanding;

demonstrates strong

integration of concepts

Clear

understanding with

minor gaps

Basic

understanding;

limited depth

Significant

inaccuracies or

misunderstandings

/30

Application &

Clinical Relevance (20

marks)

Strong application to

pharmacy practice with

clear, relevant examples

Adequate

application with

some examples

Minimal or weak

application

Little to no

application

demonstrated

/20

Accuracy & Use of

Terminology (15

marks)

Consistent, accurate use of

pharmacological

terminology

Mostly accurate

terminology

Occasional

incorrect or

unclear

terminology

Frequent misuse of

terminology 

/15

Organization &

Clarity (15 marks)

Logical structure,

professional tone, highly

clear writing

Generally

organized and clear

Some

organizational or

clarity issues

Disorganized or

unclear writing 

/15

Completeness &

Depth (10 marks)

All questions answered

thoroughly and within word

expectations

Minor gaps in

completeness

Several

incomplete

responses

Many incomplete or

missing responses 

/10

Grammar, Mechanics

& Professional

Presentation (10

marks)

Free of errors; highly

professional formatting 

Minor errors 

Several

distracting errors

Numerous errors

affecting readability 

/10