A - Unity and Diversity
B - Form and Function
B1.1 Carbohydrates and lipids
B1.2 Proteins
B2.1 Membranes and membrane transport
B2.2 Organelles and compartmentalization
B2.3 Cell specialization
B3.1 Gas exchange
B3.2 Transport
B3.3 Muscle and motility (HL)
B4.1 Adaptation to environment
B4.2 Ecological niches
C - Interaction and Interdependence
D - Continuity and Change
View a summary cheatsheet for B4.1 Adaptation to environment
B4.1.1 Habitat as the place in which a community, species, population or organism lives
B4.1.2 Adaptations of organisms to the abiotic environment of their habitat
B4.1.3 Abiotic variables affecting species distribution
B4.1.4 Range of tolerance of a limiting factor
B4.1.5 Conditions required for coral reef formation
B4.1.6 Abiotic factors as the determinants of terrestrial biome distribution
B4.1.7 Biomes as groups of ecosystems with similar communities
B4.1.8 Adaptations to life in hot deserts and tropical rainforest
