DSE Biology

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DSE biology bench: an optical microscope with a prepared slide, a DNA double helix model, a slide box, a leaf in a shallow dish and fine forceps.

Connect cells, genetics, organisms and ecology, then develop investigation and elective-topic skills.

  • Connect separate facts into causal networks that explain biological phenomena
  • Move from data trends to biological mechanisms rather than describing graphs only
  • Build complete investigation answers through variables, controls, error and evidence
  • Use precise terminology and context to improve extended responses
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Course highlights

Conceptual understanding Connect knowledge through causal mechanisms Trace relationships among structure, function, matter, energy and regulation instead of memorising chapters separately.
Mechanisms, not labels
Explain a phenomenon from cause through intermediate processes to outcome.
Connect biological levels
Link molecular, cellular, organ, organism and ecosystem changes.
Diagnose misconceptions
Use similar concepts and counterexamples to expose memorised but misunderstood ideas.
 Data-based questions Infer biological mechanisms from evidence Read axes, compare groups and quantify differences before applying biological principles.
Describe before explaining
Separate objective trends from mechanistic interpretation.
Quantify comparisons
Support answers with values, ratios or magnitudes of change.
Respect the context
Limit conclusions to what the data support instead of inserting generic answers.
 Experimental questions Build a testable scientific argument Move from hypothesis, variables and controls to data handling, limitations and improvements.
Variables and controls
Define independent, dependent and controlled variables and an appropriate control.
Reliable evidence
Consider repeats, samples, measurement, safety and ethics.
Error and improvement
Explain how a limitation affects results and propose a direct improvement.
 Extended responses Organise complete explanations with precise terms Plan the required mechanisms and terminology from the marks and causal depth, avoiding irrelevant material.
Answer skeleton
List essential mechanisms and terms before turning them into connected sentences.
Terminological precision
Distinguish easily confused structures, processes and substances.
Select for context
Use knowledge that answers the question rather than substituting length for accuracy.
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Course content

Cells and molecules of life
Cell structure, biomolecules, metabolism, photosynthesis and respiration.
Genetics and evolution
Mendelian genetics, molecular genetics, variation, classification and evolution.
Organisms and environment
Life processes, homeostasis, ecosystems, energy flow and nutrient cycles.
Health and diseases
Pathogens, causes of disease, defence mechanisms and public health.
Human physiology
Elective topic covering regulation, control and the internal environment.
Applied ecology
Elective topic covering conservation, pollution and resource management.
Microorganisms and humans
Elective topic covering microbial properties, uses, genetics and hazards.
Biotechnology
Elective topic covering modern techniques, applications and ethical implications.

Course fees

4 lessons per month 90 minutes per lesson

Fees by level

S4
HK$1,380/ 4 lessons
S5-S6
HK$1,560/ 4 lessons
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