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C1.2.1—ATP distributes energy

ATP distributes energy by moving small, soluble and reusable energy packets from respiration to cellular processes that require work, supporting usable cellular work and measurable biological activity.

Syllabus
First assessment 2025
Objective
C1.2.1
Level
SL

Exam analysis

Chance of appearing1%of analysed past papers
Latest appearanceNovember 2025
Most common paperPaper1
Typical marks1–2

Common command terms

  • Identify
  • Explain

Recent exam appearances

November 2025Paper1B ["SL"] · TZ33(e)[ 2 ]C1.2.1—ATP distributes energy
May 2011Paper1 ["SL"] · TZ112[ 1 ]C1.2.1—ATP distributes energy
Practice this objective

Coverage 2011–2025 · Updated 15 Jul 2026

Concept essentials

  • ATP stores and distributes usable energy within cells.
  • ATP hydrolysis releases energy by conversion to ADP and phosphate.
  • ATP can be regenerated from ADP during respiration.
  • ATP powers processes such as ion pumping and resting potential maintenance.
ConceptIB Biology SL