Are these aligned to the upper-sec IP/O-Level Biology syllabus?

Yes — they cover the full Sec 3–4 sequence from cells and molecules to inheritance and ecology, matching IP/O-Level expectations.

Do you include DBQ cues and practical reminders?

Each topic includes data handling prompts, common pitfalls, and short practical cues so you can transfer concepts into structured responses.

Can I download everything as one PDF?

Yes — download /pdf/ip-biology-upper-sec-notes-complete.pdf for the consolidated printable bundle.

How should I pace revision across Sec 3 and Sec 4?

Use the topic outline to sequence foundations first (cells, movement, molecules) before physiology/ecology; revisit genetics/reproduction regularly with DBQ drills.

Are these notes free?

Yes. If you want a tailored plan for your next test, WhatsApp us and we’ll point you to the exact chapters and drills.

Integrated Programme (IP) / O-Level Biology Notes (Sec 3–4)

Last updated: 2025-12-03

Sec 3–4 Biology concept explainers, data-based question (DBQ) walkthroughs, and practical checklists aligned to Singapore-Cambridge GCE O-Level expectations.

Download the full Integrated Programme (IP) / O-Level Biology (Sec 3–4) notes bundle

Grab the consolidated PDF, then WhatsApp us your next test topic and we’ll point you to the exact pages or tailor a quick plan.

Download combined notes (PDF)

Prefer tailored notes? WhatsApp us with your topic.

Sec 3–4 topics from cells to inheritance, mapped in syllabus order.

DBQ and data-handling cues embedded in each chapter.

Practical and fieldwork reminders for ecology-linked topics.

Optimised PDF for printing and offline study.

How to use these notes

Download the PDF and work through cells → physiology → ecology before looping genetics/reproduction.
Use the TOC for DBQ warm-ups—recap the concept, then attempt the embedded data prompts.
Cycle the practical planning templates every fortnight and WhatsApp us for a short plan before practicals.

Related hubs

IP Biology tuition hub for full pacing and WA diagnostics.
H2 Biology notes hub for the JC bridge sequence.
O-Level Biology practicals hub for Paper 3 technique refreshers (microscopy, assays, data handling).

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Frequently Asked Questions

Are these aligned to the upper-sec IP/O-Level Biology syllabus?
Yes — they cover the full Sec 3–4 sequence from cells and molecules to inheritance and ecology, matching IP/O-Level expectations.
Do you include DBQ cues and practical reminders?
Each topic includes data handling prompts, common pitfalls, and short practical cues so you can transfer concepts into structured responses.
Can I download everything as one PDF?
Yes — download /pdf/ip-biology-upper-sec-notes-complete.pdf for the consolidated printable bundle.

Get your tailored notes

Topic Outline

Syllabus Breakdown

Year	Key Topics Covered
Year 3	Cell structure, membranes, and transport processes DNA replication, protein synthesis, and gene expression Human physiology: transport, excretion, coordination and response Data-based question frameworks and essay scaffolds
Year 4	Inheritance patterns, pedigree analysis, and genetics calculations Evolution, biodiversity, and conservation case studies Ecology fieldwork skills and sampling techniques Practical planning templates, risk assessments, and evaluation checklists