Unit 4 · 4.2 — Introduction to Signal Transduction [cite: 9, 28]
6 learning items · ~2.08% exam weight (unit share)
Everything to learn here
- Concept: Signal transduction pathways physically link extracellular signal reception to an intracellular response via three distinct steps: reception, transduction, and response [cite: 13, 14].
- Vocabulary: GPCR (G-Protein Coupled Receptor) — a ubiquitous transmembrane receptor that activates an internal G-protein upon ligand binding [cite: 13, 14].
- Vocabulary: Ligand-Gated Ion Channel — a membrane receptor that changes structural shape to allow specific ions to flood across the membrane immediately upon signal binding [cite: 14].
- Concept: Signal transduction pathways link signal reception to a specific cellular response through a sequence of molecular interactions.
- Skill: Identify how a molecule's structure allows it to mimic a ligand and activate a specific cellular receptor.
- Concept: Signaling cascades relay and amplify messages from receptors to targets using enzymes and second messengers like cAMP.
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