Videos for C2.1 Chemical signalling (HL) - IB
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 C2.1 Chemical signalling (HL) 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.
5 min
Biology C2.1.1
C2.1.1 Receptors
4 min
Biology C2.1.2
C2.1.2 Cell signalling by bacteria in quorum sensing
7 min
Biology C2.1.3
C2.1.3 Hormones, neurotransmitters, cytokines and calcium ions
9 min
Biology C2.1.4
C2.1.4 Chemical diversity of hormones and neurotransmitters
2 min
Biology C2.1.5
C2.1.5 Localized and distant effects of signalling molecules
4 min
Biology C2.1.6
C2.1.6 Transmembrane receptors VS Intracellular receptors
6 min
Biology C2.1.7
C2.1.7 Initiation of signal transduction pathways by receptors
5 min
Biology C2.1.8
C2.1.8 Transmembrane receptors for neurotransmitters and changes to membrane potential
4 min
Biology C2.1.9
C2.1.9 Transmembrane receptors that activate G proteins
4 min
Biology C2.1.10
C2.1.10 Mechanism of action of epinephrine (adrenaline) receptors
5 min
Biology C2.1.11
C2.1.11 Transmembrane receptors with tyrosine kinase activity
5 min
Biology C2.1.12
C2.1.12 Intracellular receptors that affect gene expression
3 min
Biology C2.1.13
C2.1.13 Effects of the hormones oestradiol and progesterone on target cells
5 min
Biology C2.1.14
C2.1.14 Regulation of cell signalling pathways by positive and negative feedback