IB Biology SL C3.1.2 Hierarchy in Multicellular Organisms Questions

Explore how cells cooperate through tissues, organs and organ systems to produce multicellular emergent properties, including thinking in an organized brain in IB Biology SL C3.1.2.

Exam points

Explain that multicellular organization forms a hierarchy from cells to tissues, organs, organ systems and whole organisms, enabling properties not present in isolated cells.
Use the organized-brain example to identify thinking as an emergent property produced by coordinated interactions among many nerve cells.

[Maximum number: 1]

Why do multicellular organisms have emergent properties?

They have more genes than unicellular organisms.

Properties of unicellular organisms are enhanced by having many cells.

All of their genes are expressed whereas unicellular organisms express only some.

They show properties that can only result from the interaction of many cells.

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IB Biology SL C3.1.2 Hierarchy in Multicellular Organisms Questions question 1