Question

Which stage of cellular respiration is anaerobic and occurs outside the mitochondria

Glycolysis
Krebs cycle
Electron transport

Answer 1

Glycolysis

Step-by-step explanation:

Glycolysis is anaerobic (non-oxygen using) and occurs in the cytoplasm. This is also what many scientists use to support the notion that glycolysis was first found in prokaryotes, then spread. Electron transport uses oxygen because oxygen is what pullls the electrons through the ETC. The Krebs cycle does not directly need oxygen, but it is aerobic (oxygen-requiring) because it needs the coenzymes regenerated by the ETC, which relies on oxygen. It yields the following products: 6 NADHs, 2 FADH2s, 4 CO2s, and 2 ATPs.