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IB Biology HL C2.1.10 Hl Epinephrine Adrenaline Mechanism Questions

Follow how epinephrine binding to an adrenergic GPCR activates a G protein and adenylyl cyclase, producing cAMP that carries the signal to a cell response.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Trace epinephrine from adrenergic GPCR binding through G-protein activation and cAMP to a cellular response.

IB Biology HL C2.1.10 Hl Epinephrine Adrenaline Mechanism Questions question 1

[Maximum number: 3]

The diagram shows a G protein, bound to a G protein-coupled receptor (GPCR), a transmembrane receptor which responds to epinephrine (adrenaline).

Figure for Question IB Biology HL C2.1.10 Hl Epinephrine Adrenaline Mechanism Questions question 1 — IB Biology HL

Explain how epinephrine exerts its effects in the cell.

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