Two problems for catabolizing organic compounds in energy-yielding metabolism:产能代谢中有机物分解代谢 1.Conserving some of the energy released as ATP; By substrate-level phosphorylation 2.Disposing of electrons removed from the electron donor. Solved by the production and excretion of fermentation products Chen Feng,Microbiology,SJTUChen Feng, Microbiology, SJTU Two problems for catabolizing organic compounds in energy-yielding metabolism:产能代谢中有机物分解代谢 1. Conserving some of the energy released as ATP; By substrate-level phosphorylation 2. Disposing of electrons removed from the electron donor. Solved by the production and excretion of fermentation products