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GAMSAT Lessons & Topic Guides

Everything that actually comes up — Section I reasoning, Section II essay technique, and the Section III biology, chemistry and physics. In-depth, with worked examples and a quick check-your-understanding quiz on each. Free, no login required.

Across the exam(2)

Section I — Humanities(10)

Section II — Written(4)

Section III — Sciences(34)

Strategy4m

Section III: reasoning, not recall

The single mindset shift that separates competitive Section III scores from the rest.

Technique3m

Reading graphs & data under pressure

A checklist for extracting the right information from figures fast — without the classic traps.

Concept5m

Equilibrium & Le Chatelier's principle

The high-yield chemistry idea behind a steady stream of Section III questions.

Concept5m

Acid–base & pH essentials

The acid-base reasoning that turns up again and again in Section III chemistry.

Concept4m

Genetics: inheritance & probability

Punnett-square reasoning and the probability skills behind Section III genetics.

Concept4m

Rates of reaction & kinetics

What changes a reaction's speed — and how Section III tests it with graphs and data.

Concept4m

Energy, work & power (physics essentials)

The handful of physics relationships that unlock a chunk of Section III.

Concept4m

Cell biology & membranes

The cell-membrane and transport ideas that drive a steady stream of Section III biology.

Concept4m

Organic chemistry: functional groups

Recognising functional groups — the pattern-matching that makes organic Section III tractable.

Concept5m

Enzymes & kinetics

How enzymes work, what Km and Vmax mean, and how to read inhibition graphs the GAMSAT way.

Concept5m

Stoichiometry & the mole

Moles, the n = m/M and n = cV shortcuts, mole ratios, and finding the limiting reagent.

Concept5m

Forces & Newton's laws

Free-body diagrams, F = ma, and the action–reaction trap — the core of GAMSAT mechanics.

Concept5m

DNA → RNA → protein

The central dogma, base pairing, codons and reading frames — enough to reason through any sequence question.

Concept6m

Redox & electrochemistry

Electrons changing hands — oxidation states, agents, and how a battery actually works.

Concept5m

Photosynthesis

How plants turn light into sugar — and where the oxygen you're breathing actually comes from.

Concept6m

The neuron & action potentials

How a neuron fires an all-or-nothing electrical spike — and the ion movements behind every phase.

Concept5m

Waves & sound

One equation, v = fλ, behind light, sound, ripples and earthquakes — plus the traps that trip people up.

Concept6m

Atomic structure & the periodic table

What's inside an atom, why isotopes exist, and how the table's shape predicts an element's behaviour.

Concept7m

Cellular respiration & ATP

How a single glucose is banked into ~30+ ATP across glycolysis, the Krebs cycle and the electron transport chain.

Concept7m

The kidney & the nephron

How the nephron filters ~180 L of blood a day and fine-tunes water and ions through filtration, reabsorption and secretion.

Concept7m

Hormones & the endocrine system

Chemical messengers, feedback loops, and the key idea: a hormone's mechanism depends on whether it can cross the cell membrane.

Concept5m

Homeostasis & feedback

How the body holds temperature, glucose and pH steady — the negative-feedback loop, and the rare positive-feedback exceptions.

Concept6m

Chemical bonding & intermolecular forces

Ionic, covalent and metallic bonds — and the weaker forces between molecules that set melting points and solubility.

Concept6m

Kinematics & motion

Describing motion with the SUVAT equations — and the projectile traps that catch people out.

Concept6m

Electricity & circuits

Voltage, current and resistance tied together by Ohm's law — and how series and parallel circuits differ.

Concept6m

Thermochemistry & enthalpy

Exothermic vs endothermic, the meaning of ΔH, and using bond energies and Hess's law.

Concept5m

Radioactivity & half-life

Alpha, beta and gamma decay, and the fixed-rate maths of half-life.

Concept6m

Organic reaction mechanisms

How electrons flow in organic reactions, and the SN1-vs-SN2 decision the GAMSAT loves.

Concept5m

Gas laws

The ideal gas law PV = nRT and the relationships behind it — with the Kelvin trap.

Concept6m

Natural selection & evolution

Why evolution is differential reproduction — not 'survival of the strongest' — and what selection actually acts on.

Concept6m

Ecology & populations

Energy flow, trophic levels and population growth — the relationships that structure every ecosystem.

Concept6m

Isomerism & stereochemistry

Same formula, different molecule — structural vs stereoisomers, chirality, and why it matters.

Concept5m

Momentum & collisions

Why momentum is conserved in every collision, and how elastic and inelastic collisions differ.

Concept5m

Light & optics

Reflection, refraction and Snell's law — why light bends and which way.

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