These comprehensive video lessons help IB Biology students Standard Level (SL) and Higher Level (HL) understand and master the essential concepts needed for success in IB Exams. Each video focuses on C3.1 Integration of body systems and is aligned with the IB Biology syllabus, ensuring focused learning on cell biology, genetics, and ecology. Students can watch and rewatch anytime, anywhere, perfect for visual learners, reinforcing complex concepts, and understanding IB methodology. By using RevisionDojo's video lessons consistently, learners build deep understanding and enter the exam with confidence.
Biology C3.1.1
C3.1.1 System integration
Biology C3.1.2
C3.1.2 Cells, tissues, organs and body systems
Biology C3.1.3
C3.1.3 Integration of organs in animal bodies
Biology C3.1.4
C3.1.4 The brain as a central information integration organ
Biology C3.1.5
C3.1.5 The spinal cord as an integrating centre for unconscious processes
Biology C3.1.6
C3.1.6 Input to the spinal cord and cerebral hemispheres through sensory neurons
Biology C3.1.7
C3.1.7 Output from the cerebral hemispheres to muscles through motor neurons
Biology C3.1.8
C3.1.8 Nerves as bundles of nerve fibres of both sensory and motor neurons
Biology C3.1.9
C3.1.9 Pain reflex arcs
Biology C3.1.10
C3.1.10 Role of the cerebellum in coordinating skeletal muscle contraction and balance
Biology C3.1.11
C3.1.11 Modulation of sleep patterns by melatonin secretion as a part of circadian rhythms
Biology C3.1.12
C3.1.12 Epinephrine (adrenaline) secretion by the adrenal glands
Biology C3.1.13
C3.1.13 Control of the endocrine system
Biology C3.1.14
C3.1.14 Feedback control of heart rate
Biology C3.1.15
C3.1.15 Feedback control of ventilation rate
Biology C3.1.16
C3.1.16 Control of peristalsis in the digestive system
Biology C3.1.17
C3.1.17 Observations of tropic responses in seedlings (HL)
Biology C3.1.18
C3.1.18 Positive phototropism (HL)
Biology C3.1.19
C3.1.19 Phytohormones (HL)
Biology C3.1.20
C3.1.20 Auxin efflux carriers (HL)
Biology C3.1.21
C3.1.21 Promotion of cell growth by auxin (HL)
Biology C3.1.22
C3.1.22 Interactions between auxin and cytokinin (HL)
Biology C3.1.23
C3.1.23—Positive feedback in fruit ripening and ethylene production (HL)