Biology
G3N tutors you through the full International Biology syllabus offline — from Living and non-living things, Parts of the human body, Basic needs of plants and animals and more — with adaptive lessons, instant quizzes, flashcards and exam-ready summaries.
Syllabus
What you’ll cover in Biology.
The complete topic outline G3N teaches, mapped to the International curriculum.
Phase 1 (KG)
8 topicsLiving and non-living things
Parts of the human body
Basic needs of plants and animals
Animals and their young
Familiar plants and their features
Senses: sight, hearing, touch, taste, smell
Seasonal changes and living things
Caring for living things
Phase 2 (Grades 1-2)
8 topicsPlant parts and their functions: roots, stem, leaves, flower
Life cycles: butterfly, frog, bean plant
Animal habitats and adaptations
Food chains: producers, consumers, decomposers
Human body systems: skeletal and muscular basics
Healthy eating and nutrition basics
Microhabitats and local biodiversity
How animals move and survive
Phase 3 (Grades 3-4)
9 topicsCell as the basic unit of life
Photosynthesis: light, water, carbon dioxide, and glucose
Reproduction in plants: pollination and seed dispersal
Ecosystems and interdependence
Classification of living organisms
Digestive system and nutrient absorption
Adaptation and natural selection introduction
Human impact on biodiversity
Water cycle and its role in ecosystems
Phase 4 (Grades 5-6)
9 topicsCell structure: plant vs animal cells
Organ systems: circulatory, respiratory, digestive, nervous
Genetics introduction: inherited traits and variation
Evolution and evidence for evolution
Food webs and energy flow in ecosystems
Biomes and major ecosystem types
Human reproductive system overview
Disease: pathogens, immune response, vaccination
Environmental sustainability and conservation
MYP 1 (Grade 6)
9 topicsCell theory and cell structure
Prokaryotic vs eukaryotic cells
Unicellular and multicellular organisms
Diffusion and osmosis
Nutrient groups: carbohydrates, proteins, fats, vitamins, minerals
Enzymes and digestion
Skeletal system: bones, joints, cartilage
Classification systems: kingdoms and species concept
Ecosystems: biotic and abiotic factors
MYP 2 (Grade 7)
9 topicsMitosis and cell division
DNA structure and function introduction
Genetics: dominant and recessive alleles
Punnett squares and inheritance patterns
Plant organ systems: root, stem, leaf, flower
Transport in plants: xylem, phloem, transpiration
Respiratory system: gas exchange in lungs
Circulatory system: heart, blood vessels, blood
Ecology: population dynamics and carrying capacity
MYP 3 (Grade 8)
10 topicsMeiosis and sexual reproduction
Chromosomes and karyotypes
Mutations and genetic disorders
Hormonal control: endocrine system overview
Nervous system: neurons, synapses, reflex arcs
Immune system: non-specific and specific defences
Photosynthesis: light-dependent and independent reactions overview
Cellular respiration: aerobic and anaerobic
Homeostasis: temperature regulation and blood glucose
Human impact on ecosystems: pollution and habitat loss
MYP 4-5 (Grades 9-10)
10 topicsMolecular biology: DNA replication and protein synthesis
Gene expression and regulation
Biotechnology: PCR, gel electrophoresis, genetic engineering
Evolution: natural selection, evidence, speciation
Ecology: energy flow, nutrient cycles (carbon, nitrogen)
Population ecology: growth models and limiting factors
Plant biology: hormones, tropisms, reproduction
Reproductive technologies and ethical considerations
Biodiversity assessment and conservation strategies
Statistics in biology: chi-squared and standard deviation
Biological molecules, cells and the diversity of life
9 topicsWater
Nucleic acids
Origins of cells (HL)
Cell structure
Viruses (HL)
Diversity of organisms
Classification and cladistics (HL)
Evolution and speciation
Conservation of biodiversity
Structure and function in living organisms
10 topicsCarbohydrates and lipids
Proteins
Membranes and membrane transport
Organelles and compartmentalization
Cell specialization
Gas exchange
Transport
Muscle and motility (HL)
Adaptation to environment
Ecological niches
Interactions, systems and ecology
9 topicsEnzymes and metabolism
Cell respiration
Photosynthesis
Chemical signalling (HL)
Neural signalling
Integration of body systems
Defence against disease
Populations and communities
Transfers of energy and matter
Continuity, inheritance and change
12 topicsDNA replication
Protein synthesis
Mutation and gene editing
Cell and nuclear division
Gene expression (HL)
Water potential
Reproduction
Inheritance
Homeostasis
Natural selection
Stability and change
Climate change
How G3N helps
Turn this syllabus into a pass.
Concept-led learning
Lessons that match inquiry-based, conceptual international curricula rather than rote answers.
Practice on demand
Generate quizzes for any unit and review marked answers with explanations.
Summarise anything
Turn dense readings into clear, structured study notes in seconds.
Master Biology, offline.
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