The exam
The GAMSAT syllabus
There isn’t one. ACER publishes the Section 3 subject proportions and the assumed academic level, and no topic list at all. Everything beyond those two statements — including the checklist further down this page — is reverse-engineered.
The short version
ACER publishes no topic syllabus for any section of GAMSAT. What it does publish is that Section 3 is 40% chemistry, 40% biology and 20% physics, pitched at the first year of university studies in biology and chemistry, and A-level/Leaving Certificate/Year 12 in physics. Two of the largest prep providers in this market state the absence of a syllabus openly on their own sites, then sell a topic list anyway. Ours is a topic list too — we just label what it is.
- 40%Chemistry
- 40%Biology
- 20%Physics
- 0Official topic lists published
What ACER actually publishes
Three statements, all free in the Information Booklet. Everything else in this market is built on top of them.
One — the subject split. ACER, verbatim: “The Reasoning in Biological and Physical Sciences section is made up of questions in three discipline areas in the following proportions: Chemistry 40%, Biology 40%, Physics 20%.” This has been unchanged since at least the 2020 booklet. It is ACER-official, not provider folklore — which is worth knowing, because a lot of marketing implies the split is inside knowledge.
Two — the assumed level. The knowledge required “generally corresponds to the first year of university studies in biology and chemistry, and A-level/Leaving Certificate/Year 12 in physics. The test however, focuses primarily on problem solving and on the use of the prerequisite knowledge.” That level has not moved in at least six years.
Three — the skills. ACER lists what Section 3 questions must actually make you do: identify knowledge in new contexts, analyse and interpret data, discover relationships, translate knowledge from one form to another, formulate and apply hypotheses, deduce consequences from models, follow and evaluate a line of reasoning, categorise and select relevant information, extrapolate, interpolate, estimate and recognise limits in accuracy.
That third list is the closest thing to a syllabus that exists. It describes operations, not topics — which is the whole design of the exam.
Section 3 is not a pure reasoning test either
The opposite overcorrection is just as common. ACER states that Section 3 “examines the recall and understanding of basic science concepts” and that “success in GAMSAT will be difficult without a good knowledge and ability in the biological and physical sciences”. Knowledge is the entry ticket; applying it to unfamiliar data under time pressure is the differentiator.
Section 3 at a glance
| Fact | Detail |
|---|---|
| Questions | 75 |
| Time | 150 minutes |
| Format | Multiple choice, exactly four options, best-answer wording |
| Subject mix | Chemistry 40% · Biology 40% · Physics 20% |
| Disciplines | Interleaved throughout the section, not blocked by subject |
| Stimulus formats | Text, mathematical, graphs, tables and diagrams |
| Marking | No negative marking; all questions have the same value |
| Trial questions | A small number of items do not count; the number is not published |
The governing design principle is ACER’s own: “Each question presented will provide you with everything you need to be able to answer the question.” Read literally, that is a promise about scope — anything genuinely obscure has to be handed to you in the stimulus. It is also why memorising constants is such a poor use of time.
Our reverse-engineered topic checklist
Labelled honestly: this is our reconstruction, not ACER's list. Nobody has ACER's list, because it does not exist publicly.
The top-level headings below are corroborated across three or four independent providers. The second column is our own calibration of what “first-year university” and “Year 12” mean in practice. Treat it as a map of where to look, not as a specification you can be examined against.
Because there is no official list to check a reconstruction against, the useful test of a topic is not whether it appears on somebody’s syllabus but whether questions written on it behave the way real ones do. That is a question about item quality rather than coverage, and we handle it separately on GAMSAT practice questions— what makes an item representative in each section, and why the free “past paper” PDFs circulating online are the one preparation habit that can cost you marks.
| Biology — 40% of Section 3 | What that covers in practice |
|---|---|
| Cell biology | Membranes and transport, organelles, cell signalling, the cytoskeleton |
| Cell division | Mitosis and meiosis by phase, ploidy, allele terminology, the cell cycle |
| Molecular genetics | Replication, transcription, translation, mutation, gene regulation |
| Mendelian and population genetics | Punnett squares, pedigrees, linkage, Hardy–Weinberg equilibrium |
| Metabolism and bioenergetics | Glycolysis, the citric acid cycle, oxidative phosphorylation, ATP yield |
| Physiology by system | Cardiovascular, respiratory, renal, nervous, endocrine, gastrointestinal, immune, musculoskeletal |
| Microbiology and virology | Prokaryote structure, viral replication cycles, antibiotic action |
| Evolution | Selection, speciation, phylogeny read from a tree rather than recalled |
| Experimental design and data analysis | Controls, confounders, reading a result you have never seen |
| Chemistry — 40% of Section 3 | What that covers in practice |
|---|---|
| General and inorganic | Atomic structure, periodicity, bonding, VSEPR, intermolecular forces |
| Thermodynamics | Enthalpy, entropy, Gibbs free energy, spontaneity |
| Kinetics | Rate laws, rate-determining steps, catalysis, Arrhenius behaviour |
| Equilibria | Le Châtelier, equilibrium constants, solubility and Ksp |
| Acids, bases and buffers | pH and pKa, titration curves, buffering including in blood |
| Electrochemistry and redox | Oxidation numbers, half-cells, the Nernst relationship |
| Organic structure | Functional groups, nomenclature, resonance, acidity and basicity |
| Stereochemistry | Chirality, R/S, Fischer and Newman projections, isomerism |
| Reactions and mechanisms | Substitution and elimination, addition, condensation, redox in organic systems |
| Biochemistry | Amino acids, peptides, carbohydrates, lipids, enzyme kinetics and inhibition |
| Spectroscopy and lab technique | Beer–Lambert, IR and NMR read as data, chromatography — in scope, contrary to common assumption |
| Physics — 20% of Section 3 | What that covers in practice |
|---|---|
| Mechanics | Kinematics, Newton’s laws, momentum, work and energy, torque and equilibrium |
| Fluids and materials | Pressure, buoyancy, flow, stress and strain |
| Waves and sound | Wave properties, superposition, resonance, the Doppler effect |
| Optics | Reflection, refraction, lenses and mirrors, the inverse-square law |
| Electricity and magnetism | Circuits and V = IR, capacitance, fields and forces |
| Thermal physics | Heat transfer, specific and latent heat, the gas laws |
| Radioactivity and nuclear | Decay modes, half-life, exponential reasoning |
| Units, dimensional analysis and graph literacy | Treat this as a discipline of its own — it appears in all three subjects |
What is out of scope
Inferred from ACER’s stated ceiling, not from an ACER exclusion list — no such list is published.
- Calculus of any kind
- Quantum mechanics beyond photon energy and simple atomic spectra
- Relativity beyond E = mc²
- Second- and third-year organic synthesis, named-reaction recall, pericyclic reactions, retrosynthesis
- Detailed gross anatomy, histology, or clinical diagnosis
- Pharmacology beyond mechanism-of-action reasoning supplied in the stimulus
- Formal statistical hypothesis testing — interpreting a stated result is in scope, computing a t-test is not
- Taxonomy as terminology recall
- Memorised pKa values, standard potentials or spectroscopic shift tables
One published UK provider syllabus in this market includes Diels–Alder reactions, sigmatropic rearrangements, Hückel’s rule and the Wiener index. That is well above ACER’s stated first-year ceiling. A maximalist syllabus is evidence of what a course sells, not of what the exam tests.
The conditions the syllabus is bounded by
What you are allowed to bring constrains what can be asked. This is more informative than most topic lists.
| Item | Permitted? | What that implies |
|---|---|---|
| Calculator | No | Every calculation must be doable by hand in about two minutes. Clean cancellation, powers of ten, integer pH values. |
| Ruler | No | No question can require you to measure a printed figure. |
| Formula sheet | No | Any formula an item genuinely needs should appear alongside the question stem. |
| Periodic table | No | Atomic weights and numbers are supplied in the stimulus where required. |
| Spellcheck and autocorrect (Section 2) | No | You write into a plain surface. ACER states spelling and punctuation errors do not affect your score. |
| Copy and paste (Section 2) | No | Restructuring an essay mid-flight is expensive. Plan before you type. |
| Bilingual dictionary | Sections 1 and 2 only | Printed and unmarked. Not permitted in Section 3, and no application is needed. |
| Scratch paper | Yes | Provided at test centres — two A4 sheets per section, or bring an erasable whiteboard of about A4 size. |
The practical consequence is that mental arithmetic speed is part of the syllabus, even though it appears in no topic list. Log rules, scientific notation, index laws, ratio reasoning, percentage change, estimating a root, resolving a vector, reading a gradient off a graph. Candidates from non-science backgrounds consistently report that this — not the biology — is what actually costs them time.
Sections 1 and 2 have even less of a syllabus
Section 1 (62 questions in 100 minutes) tests, in ACER’s words, “skills in the interpretation and understanding of ideas in social and cultural contexts”, using personal, imaginative, expository and argumentative texts. There is no reading list. “Read widely” is the standard advice precisely because nothing narrower can honestly be said.
Section 2 (2 tasks in 65 minutes) assesses “the ability to generate and develop ideas in writing”, on two criteria: the quality of the thinking, and the control and use of language in expressing it. Each response is scored independently three times. Themes are given on the day; there is no list of possible topics.
Do not memorise essays
ACER runs plagiarism checks on Section 2 responses using AI-assisted tooling, including against text supplied by preparation providers, and warns that a candidate can be flagged even if they have never seen the original source. Its own conclusion: “Memorised essays generally score poorly. ACER recommends to avoid this approach.” Any provider selling model paragraphs to memorise is selling you a risk.
Where candidates over-invest
The only ACER-official statement about low-yield preparation is blunt: “There is little benefit to be gained from last-minute ‘cramming’.” Beyond that, the recurring pattern across providers and candidate reports is that people over-study content depth and under-study application speed. Commonly named as wasted effort:
- Memorising every step of transcription, translation or cellular respiration. Understand what happens when a step is disrupted instead.
- Compiling extensive revision notes rather than working through questions.
- Recalling specific named reactions, pKa values or physics formulae.
- Revising advanced topics in depth. Returns fall away sharply past a critical mass.
One correction worth making explicitly, because it is published by a large provider and widely repeated: ACER states: "All questions have the same value." Marks are NOT weighted by question difficulty.Attempting more questions raises your expected score; attempting the “hard” ones does not pay a bonus.
How to use a checklist you cannot be examined against
Treat the tables above as a coverage map, not a curriculum. The productive sequence, given how the exam is actually built:
- Sit something timed first. A diagnostic tells you which of these rows are genuinely gaps and which just feel intimidating. Our free practice testis timed to ACER’s real limits and costs nothing.
- Get to a critical mass across the whole map before going deep anywhere. Breadth first is the consistent advice from candidates who improved.
- Then work in questions, not chapters. Revise a topic when a question exposes it, rather than pre-emptively.
- Drill the arithmetic separately. It is invisible on every topic list and it is where the time goes.
Our study plan puts that sequence on a timeline.
Common questions
Is there an official GAMSAT syllabus?
No. ACER publishes the Section 3 subject proportions (40% chemistry, 40% biology, 20% physics), the assumed academic level, and a list of the reasoning skills tested. It publishes no topic list for any section. Every GAMSAT topic checklist in existence, including ours, is reverse-engineered from those statements.
What level of science do you need for GAMSAT Section 3?
ACER states the required knowledge the first year of university studies in biology and chemistry, and A-level/Leaving Certificate/Year 12 in physics. One UK provider claims A-level is sufficient for all three subjects; ACER’s own wording says otherwise for biology and chemistry, and we follow ACER.
Is a periodic table or formula sheet provided in the GAMSAT?
Neither is provided, and no calculator is permitted. ACER’s booklet is explicit about calculators and rulers; on periodic tables and formula sheets it is silent, and the consistent provider position is that anything a question needs appears in its own stimulus. Design your practice around having neither.
How much reading time do you get in the GAMSAT?
ACER no longer publishes a reading-time breakdown. Earlier booklets (2020–2022) itemised it; the 2026 edition does not. Do not plan around a figure nobody currently publishes.
Do I need to memorise formulae for GAMSAT?
Broadly no. ACER’s stated principle is that each question provides everything needed to answer it, and the arithmetic must be doable without a calculator. Being fluent with common relationships saves time, but the marks come from applying them to unfamiliar data, not from recall.

