Q BankQuestion BankDocsDocuments

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
HL

Exam analysis

Chance of appearing2%of analysed past papers
Latest appearanceMay 2025
Most common paperPaper1
Typical marks1–3

Common command terms

  • Identify
  • Explain

Recent exam appearances

May 2025Paper2 ["HL"] · TZ310(a)[ 3 ]C1.2.1—ATP distributes energy
May 2017Paper1 ["HL"] · TZ214[ 1 ]C1.2.1—ATP distributes energy
Practice this objective

Coverage 2017–2025 · 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 HL