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C1.2.2—Life processes using ATP

ATP supplies active transport, biosynthesis, movement, vesicle traffic, phosphorylation and heat generation across many cellular processes, supporting usable cellular work and measurable biological activity.

Syllabus
First assessment 2025
Objective
C1.2.2
Level
HL

Exam analysis

Chance of appearing2%of analysed past papers
Latest appearanceNovember 2025
Most common paperPaper1
Typical marks1–5

Common command terms

  • Identify
  • Explain
  • Outline
  • State

Recent exam appearances

November 2025Paper2 ["HL"] · TZ38(b)[ 5 ]C1.2.2—Life processes using ATP
May 2013Paper1 ["HL"] · TZ137[ 1 ]C1.2.2—Life processes using ATP
Practice this objective

Coverage 2013–2025 · Updated 15 Jul 2026

Concept essentials

  • ATP supplies energy for active transport across membranes.
  • ATP powers movement of myosin heads, chromosomes, cilia and flagella.
  • ATP supports anabolic synthesis of macromolecules.
  • ATP can phosphorylate substrates in glycolysis and photosynthesis.
ConceptIB Biology HL