



Biology SL
3,781+ IB Questions
Browse through the available chapters to select a topic aligned with your learning goals, then dive deeper into the material to refine your understanding.
2025
2016-2024

Theme A - Unity & Diversity - QB
198 Questions
A.1 - Water
24 Questions
A.2 - Nucleic Acids
23 Questions
A.3 - Origins Of Cells
11 Questions
A.4 - Cell Structure
54 Questions
A.5 - Viruses
7 Questions
A.6 - Diversity Of Organisms
22 Questions
A.7 - Classification & Cladistics
34 Questions
A.8 - Evolution & Speciation
22 Questions
A.9 - Conservation Of Biodiversity
1 Questions

Theme B - Form & Function - QB
258 Questions
B.1 - Carbohydrates & Lipids
49 Questions
B.2 - Proteins
18 Questions
B.3 - Membranes & Membrane Transport
51 Questions
B.4 - Organelles & Compartmentalization
29 Questions
B.5 - Cell Specialization
17 Questions
B.6 - Gas Exchange
33 Questions
B.7 - Transport
43 Questions
B.8 - Muscle & Motility
6 Questions
B.9 - Adaptation To Environment
7 Questions
B.10 - Ecological Niches
5 Questions

Theme C - Interaction & Interdependence - QB
408 Questions
C.1 - Enzymes & Metabolism
69 Questions
C.2 - Cell Respiration
28 Questions
C.3 - Photosynthesis
37 Questions
C.4 - Chemical Signalling
18 Questions
C.5 - Neural Signalling
31 Questions
C.6 - Integration Of Body Systems
32 Questions
C.7 - Defence Against Disease
54 Questions
C.8 - Populations & Communities
76 Questions
C.9 - Transfers Of Energy & Matter
63 Questions

Theme D - Continuity & Change - QB
478 Questions
D.1 - DNA Replication
51 Questions
D.2 - Protein Synthesis
34 Questions
D.3 - Mutation & Gene Editing
38 Questions
D.4 - Cell & Nuclear Division
91 Questions
D.5 - Gene Expression
10 Questions
D.6 - Water Potential
5 Questions
D.7 - Reproduction
63 Questions
D.8 - Inheritance
108 Questions
D.9 - Homeostasis
37 Questions
D.10 - Natural Selection
22 Questions
Topic 12 - Climate Change
19 Questions