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 B3.3 Muscle and motility (HL)
B3.3.1 Adaptations for movement as a universal feature of living organisms
B3.3.2 Sliding filament model of muscle contraction
B3.3.3 Role of the protein titin and antagonistic muscles in muscle relaxation
B3.3.4 Structure and function of motor units in skeletal muscle
B3.3.5 Roles of skeletons as anchorage for muscles and as levers
B3.3.6 Movement at a synovial joint
B3.3.7 Range of motion of a joint
B3.3.8 Internal and external intercostal muscles
B3.3.9 Reasons for locomotion
B3.3.10 Adaptations for swimming in marine mammals
