100+ Free SINF6 Biology Practice Questions
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Key Facts: SINF6 Biology Exam
27 October 2026
2026 Biology paper date
MEHRD 2026 National Examination Timetable
207 marks
Total marks on the 2019 SINF6 Biology paper
SINF6 Biology 2019 question and answer booklet
3 hours
Paper duration plus 10 minutes reading time
MEHRD 2026 National Examination Timetable
No fee
National examination fees are prohibited for Year 12
MEHRD administrative instruction on school fees
53.8%
Year 12 national pass rate, 2025 cohort
MEHRD 2025 National Examination Results
100
Free practice questions in this bank
OpenExamPrep question bank
SINF6 Biology is a three-hour national written paper sat by Form 6 students across Solomon Islands, scheduled for Tuesday 27 October 2026. The 2019 paper carried 207 marks over three compulsory sections. There is no examination fee, and MEHRD publishes no fixed pass mark: subject results feed a Year 12 aggregate reported on a 265–500 range. This free bank supplies 100 explained multiple-choice questions across the six syllabus strands as revision practice.
Sample SINF6 Biology Practice Questions
Try these sample questions to test your SINF6 Biology exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1Which organelle is primarily responsible for synthesizing ATP through oxidative phosphorylation in eukaryotic cells?
2According to the fluid mosaic model of cell membranes, what is the primary role of cholesterol in animal plasma membranes?
3When a red blood cell is placed in a hypotonic solution, what net movement of water occurs and what is the resulting cell response?
4Which biological macromolecule monomer contains a central carbon, an amino group, a carboxyl group, a hydrogen atom, and a variable R-group?
5How do enzymes increase the rate of chemical reactions in living organisms?
6What is the primary product of the light-dependent reactions of photosynthesis that supplies reducing power to the Calvin cycle?
7In competitive enzyme inhibition, how does the inhibitor interact with the enzyme?
8During aerobic respiration, where does the Krebs (citric acid) cycle take place within a eukaryotic cell?
9What happens to human skeletal muscle cells during intense exercise when oxygen supply becomes insufficient for aerobic respiration?
10Which structural feature of chloroplasts enables them to generate a proton gradient during the light-dependent reactions?
About the SINF6 Biology Exam
The Solomon Islands National Form Six Examination (SINF6) Biology paper is the national Year 12 biology assessment, administered by MEHRD's National Education Assessment Division and timetabled as part of the Solomon Islands School Certificate Level Two (SISCL2). Candidates sit a single three-hour question-and-answer booklet; the 2019 paper carried 207 marks across compulsory multiple-choice, short-answer and extended-response sections. The syllabus spans cell biology and biochemistry, genetics, human and plant physiology, ecology with Pacific reef and mangrove applications, and evolution. In 2026 the Biology paper is scheduled for Tuesday 27 October. The 100 questions on this page are an English-language multiple-choice study adaptation of that syllabus, intended for revision rather than as a simulation of the official booklet.
Assessment
Single 3-hour question-and-answer booklet with 10 minutes of reading time. All three sections are compulsory: multiple choice, short answer, and extended response. Candidates write answers directly into the booklet and record Section A answers on the back flap.
Time Limit
3 hours plus 10 minutes reading time (session 9.00 am – 12.10 pm)
Passing Score
MEHRD does not publish a fixed percentage pass mark. Subject scores feed a Year 12 aggregate; for the 2023 sitting MEHRD reported a minimum aggregate of 265 within an aggregate range of 265–500, and 58.8% of that cohort reached or exceeded it.
Exam Fee
No fee. MEHRD's administrative instruction prohibits schools from charging national examination fees for Year 9, Year 11 and Year 12 candidates. (Ministry of Education and Human Resources Development (MEHRD), National Education Assessment Division (NEAD))
SINF6 Biology Exam Content Outline
Cell Biology and Biochemistry
Organelles, membranes and transport, macromolecules, enzymes and inhibition, respiration, and photosynthesis.
Genetics and Inheritance
Nucleic acids, replication and protein synthesis, Mendelian and non-Mendelian inheritance, mutation, linkage, gene regulation and epigenetics.
Human Physiology
Digestion, circulation and gas transport, kidney function, hormonal control, nerve and muscle physiology, immunity and homeostasis.
Plant Physiology
Xylem and phloem transport, transpiration, stomatal control, the Casparian strip, plant hormones, photoperiodism and reproduction.
Ecology and Pacific Ecosystems
Energy flow, nutrient cycling, coral and mangrove ecology, sampling methods, population regulation, invasive species and pollution.
Evolution and Biodiversity
Natural selection, homology and convergence, classification, speciation, Hardy-Weinberg, genetic drift and adaptive radiation.
How to Pass the SINF6 Biology Exam
What You Need to Know
- Passing score: MEHRD does not publish a fixed percentage pass mark. Subject scores feed a Year 12 aggregate; for the 2023 sitting MEHRD reported a minimum aggregate of 265 within an aggregate range of 265–500, and 58.8% of that cohort reached or exceeded it.
- Assessment: Single 3-hour question-and-answer booklet with 10 minutes of reading time. All three sections are compulsory: multiple choice, short answer, and extended response. Candidates write answers directly into the booklet and record Section A answers on the back flap.
- Time limit: 3 hours plus 10 minutes reading time (session 9.00 am – 12.10 pm)
- Exam fee: No fee. MEHRD's administrative instruction prohibits schools from charging national examination fees for Year 9, Year 11 and Year 12 candidates.
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
SINF6 Biology Study Tips from Top Performers
Frequently Asked Questions
What is the SINF6 Biology examination?
It is the national Form 6 (Year 12) biology paper administered by MEHRD's National Education Assessment Division, forming part of the Solomon Islands National Form Six School Certificate, now timetabled as the Solomon Islands School Certificate Level Two (SISCL2).
When is the 2026 SINF6 Biology examination?
MEHRD has scheduled Biology for Tuesday 27 October 2026, with 10 minutes of reading time and a 3-hour paper running from 9.00 am to 12.10 pm.
How is the official Biology paper structured?
As a single question-and-answer booklet with three compulsory sections. The 2019 paper allocated 40 marks to multiple choice (45 minutes), 147 marks to short answer (105 minutes) and 20 marks to extended response (30 minutes), for 207 marks in total.
Is this practice bank the same format as the real exam?
No. Only one section of the official paper is multiple choice; the rest requires written short and extended answers. These 100 items are an English-language multiple-choice study adaptation covering the same syllabus content, designed for revision and self-checking.
Is there a fee to sit SINF6 Biology?
No. MEHRD's administrative instruction to schools prohibits charging national examination fees for Year 9, Year 11 and Year 12 candidates.
What mark do I need to pass?
MEHRD does not publish a fixed percentage pass mark per subject. Subject scores contribute to a Year 12 aggregate; for the 2023 sitting MEHRD reported a minimum aggregate of 265 on a 265–500 range, and the overall 2025 Year 12 pass rate was 53.8%.
In what language is the examination set?
English. English is the language of instruction and assessment in Solomon Islands secondary schools, so this bank is in the same language as the official paper.
Do I need to know local Pacific examples?
Yes, applied ecology questions often draw on familiar Solomon Islands contexts such as coral bleaching, mangrove nurseries and malaria transmission. The official paper also warns that candidates may meet unfamiliar organisms and must apply general biological principles to them.