DP Biology (first assessment 2025)
Syllabus sections »

C2.1. Chemical signalling [HL only]

Description

[N/A]


Sub sections and their related questions

C2.1.1. Receptors as proteins with binding sites for specific signalling chemicals

None

C2.1.2. Cell signalling by bacteria in quorum sensing

C2.1.3. Hormones, neurotransmitters, cytokines and calcium ions as examples of functional categories of signalling chemicals in animals

C2.1.4. Chemical diversity of hormones and neurotransmitters

C2.1.5. Localized and distant effects of signalling molecules

C2.1.6. Differences between transmembrane receptors in a plasma membrane and intracellular receptors in the cytoplasm or nucleus

C2.1.7. Initiation of signal transduction pathways by receptors

C2.1.8. Transmembrane receptors for neurotransmitters and changes to membrane potential

C2.1.9. Transmembrane receptors that activate G proteins

C2.1.10. Mechanism of action of epinephrine (adrenaline) receptors

C2.1.11. Transmembrane receptors with tyrosine kinase activity

C2.1.12. Intracellular receptors that affect gene expression

None

C2.1.13. Effects of the hormones oestradiol and progesterone on target cells

None

C2.1.14. Regulation of cell signalling pathways by positive and negative feedback

None