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IB Biology HL C2.1.12 Hl Intracellular Receptors Questions

Follow how steroid and thyroid hormones bind intracellular receptors and how their receptor complexes act in the nucleus to regulate gene transcription.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Identify steroid and thyroxine-like hormones as ligands for intracellular receptor proteins.
  • Explain how steroid hormones cross the plasma membrane and bind receptor proteins in the cytoplasm.
  • Relate the hormone-receptor complex to nuclear DNA binding, gene transcription and production of specific proteins.

IB Biology HL C2.1.12 Hl Intracellular Receptors Questions question 1

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Describe the mode of action of steroid hormones.

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