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IB Biology HL C2.1.7 Hl Signal Transduction Pathways Questions

Follow how a hydrophilic hormone triggers a second messenger and intracellular enzyme cascade, linking each relay step to the target cell's response.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Trace epinephrine signalling from a membrane receptor through cAMP to an enzyme response.

IB Biology HL C2.1.7 Hl Signal Transduction Pathways Questions question 1

[Maximum number: 2]

The diagram demonstrates the action of steroid and peptide hormones in a section of cell and adjacent capillary.

Figure for Question IB Biology HL C2.1.7 Hl Signal Transduction Pathways Questions question 1 — IB Biology HL

On the diagram, label a
(i) second messenger.
(ii) gene regulatory protein.

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