CourseCourseConceptConceptDocsDocuments

IB Biology HL C2.1.7 Hl Signal Transduction Pathways Questions

Practise IB Biology HL 2.1.7 by applying signal transduction pathways concepts to exam questions.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Identify second messengers and gene-regulatory proteins in signal-transduction pathway diagrams.
  • Explain how epinephrine or another hydrophilic ligand activates a plasma-membrane receptor and a second messenger such as cAMP.
  • Relate second-messenger activation to a phosphorylation or enzyme-regulation cascade that produces the hormone effect.

Learn this topic

Study C2.1.7 (HL)—Signal transduction pathways conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

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.

All question bank results loaded