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IB Biology SL A2.2.1 Cells As Basic Structural Unit Questions

Practise IB Biology SL A2.2.1 by applying cell theory, evidence for cells as units of life and the principle that new cells arise from existing cells.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • State that living organisms are composed of cells and that cells are the smallest units of life.
  • State that new cells arise from pre-existing cells by cell division.
  • Identify cell division as evidence that new cells arise from pre-existing cells in the cell theory.
  • Interpret Pasteur’s swan-neck flask controls and growth outcome as evidence against spontaneous generation and for pre-existing cells.

Learn this topic

Study A2.2.1—Cells as basic structural unit conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Biology SL A2.2.1 Cells As Basic Structural Unit Questions question 1

[Maximum number: 2]

Outline the cell theory.

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