What most clearly suggests sugars contribute to making alanine?

Question

The model shows the amino acid alanine.

Answer 1

So the key here is to understand that glucose is broken down into two molecules of pyruvate via glycolysis. The structure of pyruvate is that of alanine but with the amino group replaced by a ketone. The enzyme aminotransferase does exactly what it sounds like...takes an amino group from the breakdown of other amino acids and transfers it to pyruvate, replacing the ketone and creating alanine.