IB Biology SL C3.1.1 System Integration Questions

Explore how coordinated biofilm microbes and organized nerve cells produce system-level behaviours that individual components do not show in IB Biology SL C3.1.1.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Define an emergent property as a system-level behaviour produced by interactions among components and not predictable from an isolated component.
  • Use biofilm or nervous-system evidence to explain how organization, communication and cooperative interactions create new properties such as EPS architecture, quorum sensing or resistance.

IB Biology SL C3.1.1 System Integration Questions question 1

[Maximum number: 3]

The diagram shows a biofilm that has formed on a tooth.

Figure for Question IB Biology SL C3.1.1 System Integration Questions question 1 — IB Biology SL

Using the diagram, explain the concept of emergent properties of biofilms.

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