What is the term for the process of breakdown of pyruvate in the absence of oxygen?

The amphibolic nature of the TCA (tricarboxylic acid) cycle means that it is involved in:

Which step in glycolysis directly generates ATP via substrate-level phosphorylation?

Consider the following statements: I. Krebs cycle is an amphibolic pathway. II. Catabolic pathways converge on it and anabolic pathways diverge from it. Choose the correct option: