Question

What stage of cellular respiration does not involve any carbon-based compounds as a reactant or product?

Electron transport chain

Krebs cycle

Glycolysis

Fermentation

Answer 1

It helps us help you answer the problem if you explain what aspect of it, other than the answer, you would like help with.

In this case, you can look at the overall reactions for all four of these processes. One involves in the input of energy (in the form of high energy intermediates like NAD and FAD) and the output of ATP. The others all involve input of carbon containing molecules like pyruvate and sugars. Hope that is helpful. :D

Answer 2

I should say the output of ATP and water.