IB Biology Form and Function Concepts

Form and Function connects biological structures to the processes they enable, from molecules and membranes to tissues, organs, transport systems and ecological adaptations.

Exam analysis

Published Concept 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.

Most tested topics

Practice this section

Recent 5 years · Updated 22 Jul 2026

What you’ll learn

10 topics

Pick a topic to continue.