2025 · Main examination · Q11 mark
Reproduction
Heredity
Multiple choice · Section I
HSC Biology · Free interactive sample
Exam Predictors 2026
Find official questions, understand lost marks and choose what to practise next.
Historical evidence and practice priorities. Future exam questions are not guaranteed. Independent of NESA.
2023–2025 main examinations · 134 indexed questions and separately marked subparts. Showing 6 sample entries; trend percentages use this sample only. Official result percentages describe the published exam cohort.
Free sample: progress lasts for this visit.
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Choose a topic, open the official question, then check your answer against examiner feedback.
Official averages are unavailable for these entries. Fewer marks means a smaller question, not an easier question.
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6 matching questions
2025 · Main examination · Q21 mark
Mutation
Genetic change
Multiple choice · Section I
2025 · Main examination · Q31 mark
Immunity
Infectious disease
Multiple choice · Section I
2025 · Main examination · Q41 mark
Mutation
Genetic change
Multiple choice · Section I
2025 · Main examination · Q71 mark
Homeostasis
Non-infectious disease and disorders
Multiple choice · Section I
2025 · Main examination · Q212 marks
Immunity
Infectious disease
Explain and apply · Section II
What was tested, and how?
Compare the share of marks, then open the exact questions behind each figure.
Sample only: Percentages show the share of printed marks in the selected section and year. They are historical results, not probabilities for 2026.
| Topic | 2025 | Years present |
|---|---|---|
| Genetic change | 1/1 | |
| Heredity | 1/1 | |
| Infectious disease | 1/1 | |
| Non-infectious disease and disorders | 1/1 |
Genetic change
Present in 1 of 1 year shown
Heredity
Present in 1 of 1 year shown
Infectious disease
Present in 1 of 1 year shown
Non-infectious disease and disorders
Present in 1 of 1 year shown
How marks and question types are counted
All printed alternatives are counted in these historical shares; candidates follow the paper’s instructions to choose which questions to answer. Mixed-topic items are kept together, and each indexed question contributes its marks once.
Marks and question references are cross-checked against official NESA mapping grids. Topic labels follow those grids; short index labels and skill groupings are ATARMAxxing analysis. Percentages describe indexed printed marks, including any alternatives, rather than future probabilities. NESA did not publish usable question-level cohort averages or incorrect-answer percentages in the reviewed sources.
Use these patterns alongside your own lost marks to choose practice. Keep covering the full syllabus: repeated topics are not guaranteed to appear again.
Official sources and how this analysis works
Marks and question references are cross-checked against official NESA mapping grids. Topic labels follow those grids; short index labels and skill groupings are ATARMAxxing analysis. Percentages describe indexed printed marks, including any alternatives, rather than future probabilities. NESA did not publish usable question-level cohort averages or incorrect-answer percentages in the reviewed sources.
Classification: Biology Stage 6 (2017) · applicable to HSC 2026. Each question is counted at the separately marked subpart level. The source questions and stimuli remain in the authority's original documents.
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- 2024 main examination · NESA (new tab)
- 2024 marking guidelines · NESA (new tab)
- 2025 examiner feedback · NESA (new tab)
- 2025 main examination · NESA (new tab)
- 2025 marking guidelines · NESA (new tab)
- 2026 syllabus continuity · NESA (new tab)