Biology O Level 5090 Notes Better Upd Jun 2026

To make your O Level Biology notes significantly better, focus on active recall strategies and specific formatting rules.

Instead of transcribing paragraphs, read a section, close the book, and write down the key points in your own words.

Incorporating keywords and phrases often required in marking schemes. 1. Structuring Your Notes for Maximum Recall biology o level 5090 notes better

: DNA, chromosomes and genes, monohybrid inheritance and genetic crosses, variation and natural selection.

| Specialised Cell | Function | Key Adaptations | Diagram (Sketch) | | :--- | :--- | :--- | :--- | | | Transport oxygen around the body | • Biconcave disc shape for large SA:Vol ratio for rapid diffusion • Contains haemoglobin to bind oxygen • No nucleus to leave more space for oxygen | (Draw a small, dimpled disc) | | Root Hair Cell | Absorption of water & mineral ions from soil | • Long, thin projection (root hair) to massively increase surface area • Thin cell walls to allow easy water movement | (Draw a cell with a long, finger-like protrusion) | | Palisade Mesophyll | Carry out photosynthesis | • Column-shaped to pack many cells together • Contains many chloroplasts to trap light energy | (Draw a rectangular, brick-like cell filled with green dots) | To make your O Level Biology notes significantly

Never blindly copy from the textbook. Process information in your own words before writing it down.

Differentiate between the functions of Xylem (transports water/minerals) and Phloem (transports sugars/amino acids). Process information in your own words before writing it down

: Offers highly reliable, full PDF chapter notes and quick revision guides. Biology 5090 O Level Notes | CAIE - PapaCambridge