At a glance
Key signals
0% cross fields · reaches 3 more
- Chemistry
- Biology
- Explanation
- Examples
- Misconception
- Sourced relations 2
- Attribution
Dependencies
What this concept builds on and what it makes possible — derived from the atlas’s dependency, causal and structural relations, not from every related edge.
Foundations · builds on
Oxygen (O₂)is derived fromPhotosynthesisEstablished
Oxygen is released by photosynthesis.
Mechanism: Splitting water leaves oxygen atoms that combine and are released as O₂ gas.
- Campbell Biology — demonstrates this case · verified · moderate evidence · The oxygen released comes from the splitting of water, not from CO₂. (10 — Photosynthesis)
Enables · leads to
Cellular respirationrequiresOxygen (O₂)Established
Aerobic respiration requires oxygen.
Mechanism: Oxygen is the final electron acceptor, allowing energy to be released efficiently.
- Campbell Biology — demonstrates this case · verified · moderate evidence · Oxygen is the terminal electron acceptor of aerobic respiration. (9 — Cellular Respiration and Fermentation)
System context
Oxygen (O₂)is part ofATPEstablished
Oxygen (O₂) is part of adenosine triphosphate.
Mechanism: Oxygen is the final electron acceptor in respiration, the step that lets cells extract the most energy and pack it into ATP.
- Wikidata verifiedmoderate evidence
Structural role & consequence
Interpreted from the current atlas graph — what the connections mean, not just how many there are.
Currently dark in the atlas: no key date stored · 2 of 4 of its relations lack claim-level evidence.
atlas representation · Describes the current Thinking OS representation, not the state of the world.
Builds on 1 foundation (requires / depends-on / derived-from / emerges-from).
structural · Structural graph analysis — not a claim of importance, causation or history.
Structural neighbourhood: 4 → 33 → 105 concepts reachable within 3 hops.
structural · Structural reach — being reachable is not the same as being understood.
All 4 of its relationships stay within its own discipline — a field-specific concept in the current atlas.
structural · Structural graph analysis — not a claim of importance, causation or history.
cross-field
4 within-field, 0 cross-field
Strengths & constraints
Constraints
- No dated history stored — the atlas records no key date for this concept. atlas representation
Conditions
- Its dependency reading rests on 1 foundation relation. structural
Dependency radial
What this concept builds on (left) and what it makes possible (right) — derived from dependency and causal relations.
What builds on this
1 concept build on this directly, 1 in total, across 2 disciplines.
Structural downstream reach along dependency edges — not a claim of historical necessity.
Seen through each discipline
How this concept sits in each of its fields — derived from its real connections in the graph, not asserted.
Through this lens it connects to Photosynthesis and Cellular respiration.
Through this lens it connects to Photosynthesis, Cellular respiration, ATP and Gas exchange.
Where you'll meet it
Journeys that walk you through this idea. You may recognise it from more than one.
Related ideas to explore
Concepts that look related but are not yet connected here — candidates for a connection to reason about, not established links.
Curriculum alignment
Austria · AHS Unterstufe (Sekundarstufe I) · Biologie und Umweltbildung
Appears in official curriculum objectives
Understand the role of oxygen in using nutrients as energy carriers. · 3. Klasse (7. Schulstufe)
Exact wording: „Tracheen, Kiemen und Lungen als Atmungsorgane, Bedeutung des Sauerstoffs bei der Nutzung von Nährstoffen als Energieträger“
How this official objective connects, through canonical knowledge, to what a learner actually does — each link is real data, never a coverage claim.
Canonical concept
- How each concept relates to the objective
- named — The objective's own wording names this concept.
- required — You must grasp this concept to meet the objective.
Relations & mental models
1 canonical relations connect these concepts
- Cellular respiration requires Oxygen (O₂)
Mental models these concepts carry: Energy transformation ×2Stocks and flowsActivity → Observable evidence
No pilot activity yet engages these concepts directly.
The curriculum does not name “cellular respiration” verbatim; the O₂-dependent use of nutrients as energy carriers is its physiological core.
Provenance
- Authority
- BMBWF
- Document
- BGBl. II Nr. 1/2023
- Section
- Anlage A zu Art. 4 · Biologie und Umweltbildung · Anwendungsbereiche, 3. Klasse (S. 113)
- Version
- Stammfassung, Kundmachung 2. Jänner 2023
- School type
- AHS Unterstufe (Sekundarstufe I)
- Subject
- Biologie und Umweltbildung
- Stage
- lower-secondary
- Accessed
- 2026-09-17
✓ Source verified
Pilot slice: mapped to selected official objectives, not a coverage claim. Concept identity is canonical and never redefined by a curriculum.
- Connects 4 other ideas across 2 disciplines.
- A cross-disciplinary bridge — its connections reach into 3 other fields.
- Most of its connections are of the “Dependency” kind.
- It supports 1 curriculum objective.
- It features in 1 learning journey.
Derived from the graph’s real structure — observations, not a score.
Sources
- 6th annual meeting of the oxygen society oxygen '99 (1999) verified
- Oxygen 2001 the 8th annual meeting of the oxygen society (1999) verified
- Introduction: Why oxygen chemstry? (1992) verified
- Chemistry of Oxygen-Derived Radicals (2000) verified