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IB Biology HL B1.2.11 Quaternary Protein Structure Question Bank

Practise IB Biology HL B1.2.11 by identifying quaternary structure where multiple polypeptide chains combine in haemoglobin and insulin.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Identify quaternary structure when multiple polypeptide chains combine in haemoglobin or insulin.
  • Use protein diagrams to distinguish quaternary organisation from lower structural levels.

B1.2.11 (HL)—Quaternary structure question 1

[Maximum number: 1]

Hemoglobin is a conjugated protein consisting of four polypeptide chains with attached heme groups.

Figure for Question B1.2.11 (HL)—Quaternary structure question 1 — IB Biology HL

State the level of protein structure at which the polypeptide chains of hemoglobin are combined.

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