IB Biology HL B Form and Function Questions

Practise IB Biology HL B Form and Function through questions on biological structures, cells, transport, physiology and body systems, including the wider HL evidence set.

933 questions in this syllabus scope, with question parts counted together.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam analysis

HL · 2010–2025
Past-paper evidence in Form and Function repeatedly asks students to connect structure with function across molecules, membranes, cells and exchange systems. The strongest pattern is explaining how specific features enable transport, support, movement, regulation or adaptation.
Papers with this topic114 / 117in the analysed sample
Latest appearanceNovember 2025
Tagged question parts554
Paper types5

Most tested topics

  1. B3.2 Transport68 papers
  2. B3.3 Muscle and motility [HL only]53 papers
  3. B3.1 Gas exchange50 papers
  4. B2.1 Membranes and membrane transport44 papers
  5. B1.1 Carbohydrates and lipids38 papers

117 papers analysed · Tagging incomplete