Combined Science study guides
SG-O-LEVEL · GCE O-Level (Singapore) · aligned to SEAB.
- Singapore-Cambridge GCE O-Level Combined Science, Biology: Cells and Human Physiology, from cell structure and the movement of substances to digestion, transport and respiration in humans
An O-Level Combined Science module overview for Biology: Cells and Human Physiology (SEAB 5077/5078). How the cell is built and organised, how substances move across membranes by diffusion, osmosis and active transport, how the digestive system breaks food down, how the circulatory system carries it, and how respiration releases the energy that powers it all, with links to every dot point.
📖 8 min readSEAB-5078 - Singapore-Cambridge GCE O-Level Combined Science, Biology: Genetics and Ecology, from DNA, chromosomes and cell division through monohybrid inheritance to food chains, the carbon cycle and human impact on the environment
An O-Level Combined Science module overview for Biology: Genetics and Ecology (SEAB 5077/5078). How DNA, genes and chromosomes are organised, how mitosis and meiosis differ, how monohybrid inheritance is predicted with genetic diagrams, how energy flows through food chains and carbon is recycled, and how human activity damages the environment, with links to every dot point.
📖 7 min readSEAB-5078 - Singapore-Cambridge GCE O-Level Combined Science, Biology: Plants and Nutrition, from enzymes as biological catalysts and a balanced human diet to photosynthesis, leaf structure and transport in plants
An O-Level Combined Science module overview for Biology: Plants and Nutrition (SEAB 5077/5078). How enzymes catalyse reactions and respond to temperature and pH, what a balanced human diet contains, how plants make food by photosynthesis, how the leaf is adapted for the job, and how xylem and phloem transport water and food, with links to every dot point.
📖 7 min readSEAB-5078 - Singapore-Cambridge GCE O-Level Combined Science, Chemistry: Atoms, Bonding and the Mole, from the particulate nature of matter and atomic structure through ionic and covalent bonding to the mole and stoichiometry
An O-Level Combined Science module overview for Chemistry: Atoms, Bonding and the Mole (SEAB 5076/5078). How the particle model explains states of matter, how the atom is built and linked to the periodic table, how ionic and covalent bonding set a substance's properties, and how the mole lets us calculate reacting masses, with links to every dot point.
📖 8 min readSEAB-5076 - Singapore-Cambridge GCE O-Level Combined Science, Chemistry: Metals and Organic Chemistry, from the reactivity series and the extraction of metals to alkanes, alkenes, alcohols and carboxylic acids
An O-Level Combined Science module overview for Chemistry: Metals and Organic Chemistry (SEAB 5076/5078). How the reactivity series orders metals and predicts displacement, how reactivity decides the method of extraction, and how the homologous series of alkanes, alkenes, alcohols and carboxylic acids behave, with links to every dot point.
📖 7 min readSEAB-5076 - Singapore-Cambridge GCE O-Level Combined Science, Chemistry: Reactions, Acids and Salts, from acids, bases and the pH scale through the reactions of acids and salt preparation to energy changes and the rate of reaction
An O-Level Combined Science module overview for Chemistry: Reactions, Acids and Salts (SEAB 5076/5078). How acids and bases behave on the pH scale, the characteristic reactions of acids, how soluble and insoluble salts are prepared, how reactions release or absorb energy, and what controls the rate of a reaction, with links to every dot point.
📖 7 min readSEAB-5076 - Singapore-Cambridge GCE O-Level Combined Science, Physics: Measurement, Forces and Energy, from physical quantities and measurement through forces, motion and Newton's laws to moments, pressure, work, energy and power
An O-Level Combined Science module overview for Physics: Measurement, Forces and Energy (SEAB 5076/5077). How physical quantities are measured with SI units, scalars and vectors, how forces change motion through Newton's laws and F = ma, how moments and pressure work, and how work, energy and power are calculated, with links to every dot point.
📖 7 min readSEAB-5076 - Singapore-Cambridge GCE O-Level Combined Science, Physics: Waves, Electricity and Magnetism, from thermal physics and the transfer of heat through waves and light to current electricity, magnetism and electromagnetism
An O-Level Combined Science module overview for Physics: Waves, Electricity and Magnetism (SEAB 5076/5077). How thermal energy is stored and transferred, how waves and light behave, how current, voltage and resistance relate through Ohm's law in series and parallel circuits, and how magnetism and electromagnetism produce useful devices, with links to every dot point.
📖 7 min readSEAB-5076