Skip to content
MomentumFocus. Study. Grow.
Start free

IB Diploma Programme

IB Biology (first assessment 2025) topical past papers

287 past-paper questions for Biology (first assessment 2025), filed under 40 chapters.

Questions
287
Past papers
18
Years
2025–2025
With mark scheme
100%
Practise Biology (first assessment 2025) by topicBuild a Biology (first assessment 2025) mock

Anyone can browse these pages. Opening the questions and their mark schemes takes a free Momentum account.

Biology (first assessment 2025) chapters

The chapters the bank files this subject’s questions under, in syllabus order. Each has a page of its own.

Biology (first assessment 2025) chapters, with how many questions each has
ChapterQuestionsYears
Water122025
Nucleic Acids102025
Origins of Cells (hl Only)12025
Cell Structure112025
Viruses (hl Only)62025
Diversity of Organisms82025
Classification and Cladistics (hl Only)62025
Evolution and Speciation212025
Conservation of Biodiversity112025
Carbohydrates and Lipids132025
Proteins112025
Membranes and Membrane Transport142025
Organelles and Compartmentalization72025
Cell Specialization122025
Gas Exchange132025
Transport142025
Muscle and Motility (hl Only)52025
Adaptation to Environment72025
Ecological Niches92025
Enzymes and Metabolism142025
Cell Respiration82025
Photosynthesis112025
Chemical Signaling (hl Only)72025
Neural Signaling162025
Integration of Body Systems42025
Defence Against Disease112025
Populations and Communities172025
Transfer of Energy and Matter152025
Dna Replication52025
Protein Synthesis82025
Mutations and Gene Editing102025
Cell and Nuclear Division152025
Gene Expression (hl Only)32025
Water Potential72025
Reproduction102025
Inheritance142025
Homeostasis112025
Natural Selection112025
Sustainability and Change62025
Climate Change92025

Practising in Momentum

  • Every question in a chapter as one list, from every paper and year in the bank, newest first or shuffled.
  • Each question turns over to its own part of the mark scheme, where the board published one.
  • Narrow by paper, year, session, zone and marks, and star the questions worth keeping.
  • Pick chapters, a number of questions and a time, and the exam builder draws a mock to sit and mark.
Practise Biology (first assessment 2025) by topicBuild a Biology (first assessment 2025) mock

Past-paper questions and mark schemes are the copyright of International Baccalaureate. Momentum shows them to signed-in learners for revision and does not publish them on these pages.