Biology
Respiration pathways and ATP
A lesson shell covering ATP, glycolysis, anaerobic pathways, aerobic respiration, and mitochondrial adaptation.
Lesson progress
Explain ATP hydrolysis and regeneration.Compare aerobic and anaerobic respiration.Sequence glycolysis, link reaction, Krebs cycle, and electron transport.
Respiration releases usable chemical energy from organic molecules. ATP links those energy changes to cell processes such as active transport, biosynthesis, and movement.
Respiration comparison
| Pathway | Oxygen | Typical ATP yield | Main location |
|---|---|---|---|
| Aerobic | Used | High | Mitochondria |
| Anaerobic | Not used | Low | Cytoplasm |
Key idea
If oxygen is unavailable, the electron transport chain cannot act as normal; anaerobic pathways regenerate NAD+ so glycolysis can continue.
Figure needs redraw
Reference figure to redraw: glycolysis, Krebs cycle, and chemiosmosis.
Reference asset tracked internally.