25 August 2015

#92 ATP yield in aerobic and anaerobic respiration

Only small amounts of ATP are produced when one glucose molecule undergoes anaerobic respiration. This is because only glycolysis is completed. The Krebs cycle and oxidative phosphorylation, which produce most ATP do not take place.

The precise number of molecules of ATP produced in aerobic respiratlon of one glucose molecule varies between different organisms and different cells, but is usually between 30 and 32 molecules.

Syllabus 2016-2018 

12.2 Respiration

j) distinguish between respiration in aerobic  and anaerobic conditions in mammalian tissue and in yeast cells, contrasting the relative energy released by each  (a detailed account of the total yield of ATP from the aerobic  respiration of glucose is not required)

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