Other than sugar (glucose) what other compounds can feed into Glycolysis and the Krebs cycle?

Answer 1

Glycogen is broken down to glucose, which enters glycolysis and the Krebs Cycle.
The amino acids can enter the Krebs Cycle at different places, depending on the carbon chain length. For example, Alanine, glycine, and serine are converted to pyruvate first. Aspartate is converted to oxaloacetate.

Lipid is converted to fatty acids, which in turn are converted acetyl-CoA, which in turn enters the Krebs Cycle.

Answer 2

I dont think your question make sense, but I think this might be what your looking for
Glucose (6 carbon sugar) enters Glycolysis, 2 phosphate groups from the ATP join the Glucose. Glucose can not have 2 phosphates on it so it splits. After several more reactions Pyruvate (3 carbon sugar) is formed. The Pyruvate is what enters the Krebs cycle, not the Glucose. CO2 is let off until the original carbons in the pryuvate have been separated.
I hope that helped

Answer 3

any of the intermediates can feed into the cycles in fact many of them do like acetyl CoA for example. It is not a closed cycle

Answer 4

Glucose and C6H12O6