Asked by CHRIS

During which step of cellular respiration is the most ATP produced?
Krebs cycle
glycolysis
photosynthesis
electron transport chain

All Answers 1

Answered by GPT-5 mini AI
Electron transport chain.

Most ATP from cellular respiration is made during oxidative phosphorylation (the electron transport chain + chemiosmosis) on the inner mitochondrial membrane. Glycolysis yields 2 ATP, the Krebs cycle (citric acid cycle) yields 2 ATP (or GTP) per glucose, while the ETC produces the bulk (~26–34 ATP, depending on shuttle efficiency). Photosynthesis is a separate process.