QCE Biology · Year 12
QCE Biology: what actually gets examined
Every question from 3 official QCAA papers, counted by marks, format and key word, with its unit estimated — so you can decide what to revise from evidence rather than a feeling.
3 QCAA papers, 2022–2024 · 160 questions · 273 marks
QCE Biology spreads its 273 marks across 2 units, the biggest carrying 53%, and the 2 units carry uneven weight. There is nothing here you can safely skip — the question is what order you revise in.
Counted from 3 official QCAA Biology papers (2022–2024). 160 questions, 273 marks. Which unit each question belongs to is estimated — see the note at the foot of the page.
The key words that carry the paper
Share of written-response questions by QCAA key word. Revising the content without revising the directive is how marks get lost. The lower / middle / higher grouping is ours — QCAA publishes the glossary but does not band it. Based on the 83% of written responses that open with a glossary key word; the rest open with wording outside it, such as “State” or a direct question.
Lower orderMiddle orderHigher order
Each tile is one key word; its size is that key word's share of written-response questions that open with one. The smallest 3 are grouped as Other: Classify 1% · 1q, Compare 2% · 2q, Define 2% · 2q.
Where the marks sit
Each unit with its topics underneath. The bar is that topic's share of its own unit.
Unit 3: Biodiversity and the interconnectedness of life
146 marks50% indicative weighting, quoted from the syllabus
These 89 questions were placed in this unit by an automatic estimate, not read from the paper — so there is no topic breakdown here and the consistency chips are withheld. See the note at the foot of the page.
Study Unit 3: Biodiversity and the interconnectedness of life →
Unit 4: Heredity and continuity of life
127 marks50% indicative weighting, quoted from the syllabus
These 71 questions were placed in this unit by an automatic estimate, not read from the paper — so there is no topic breakdown here and the consistency chips are withheld. See the note at the foot of the page.
Concept pages in this unit:
Across 3 papers the units carried 146, 127 marks — against a 50% indicative weighting each, quoted from the QCAA Biology 2019 v1.2 General Senior Syllabus. The counted share and the published weighting are two different measures.
How the paper is built
Marks by question format across the same 3 papers.
Multiple choice is exactly 20 marks in every paper. The rest moves around: short answer ran 61, 64, 77 marks and extended response ran 6, 5, 0 marks. 3 papers is not enough to call that a trend.
The papers this is counted from
Queensland Curriculum and Assessment Authority publishes every paper and its marking guidelines. These links go to QCAA's own copies — read the questions there. QCAA publishes each year in more than one booklet, and every one this page counted is linked.
These are the external examination papers. They are not the whole subject: Biology is also assessed by internal assessments set and marked by your school, which QCAA does not publish — so nothing on this page covers that part of your result.
Study Biology on Revizi
How these unit figures were produced
160 of the 160 questions on this page (100%) were assigned to a unit by an automatic estimate, not read from the paper. QCAA does not print a unit on each question, so the estimate compares every question against Revizi's own Biology decks for each unit.
Checked against two subjects where every question HAS been coded by hand, the same method agreed with the human 74% of the time in Biology and 64% in Chemistry. Read the unit totals as a good indication of where the marks sit, not as an exact count — some questions are in the wrong unit.
Nothing else here is estimated. The question counts, the mark totals, the format split, the key words and the papers themselves are all read straight from QCAA's papers. Consistency chips are withheld entirely, because a topic-level claim cannot survive that error rate.
Frequently Asked Questions
Which QCE Biology topics come up every year?
Not published for every unit yet. 160 questions in the papers on file were set across a whole unit rather than on one topic. Because they do not say which topics they examined, a topic that WAS examined could look absent — so the chips are withheld in the affected units rather than guessed.
Which QCE Biology unit is worth the most marks?
Unit 3: Biodiversity and the interconnectedness of life 146, Unit 4: Heredity and continuity of life 127 marks across the 3 papers analysed. The syllabus publishes an indicative weighting for each; the counted share and the published weighting are two different measures.
How was this analysed?
Every question in 3 official QCAA QCE Biology papers (2022–2024) was counted against the QCAA Biology 2019 v1.2 General Senior Syllabus: its mark value, its format and its key word, and the unit it assesses, estimated rather than read from the paper. Marks are reconciled against each paper's own stated total.
Are the exam questions reproduced here?
No. Queensland Curriculum and Assessment Authority owns the papers. This page publishes counts and links to QCAA's own copy of each paper so you can read the questions at the source. The analysis is ours; the papers stay with QCAA.
Does this predict what will be in my exam?
No, and it is not meant to. It describes what has been set. Examiners write each paper fresh and can weight a neglected topic heavily, which is why this page shows where the marks sat without singling any unit out as skippable.
Coded against the QCAA Biology 2019 v1.2 General Senior Syllabus. Where a question is coded to more than one topic its marks are split evenly, so topic totals within a unit can round a mark or two above the unit total. Last updated 2026-08-31 · Exam papers © Queensland Curriculum and Assessment Authority, linked at source.