Glucose is experimentally synthesized with C-14 at carbon 1, and employed as a substrate for aerobic metabolism. Where is the label at the end of glycolysis? Sketch the glycolysis product with the labeled carbon circled or highlighted. Now take that glycolysis product a little farther. Where is the label after entry to the Citric acid cycle? Exhibit your work, being sure to highlight the labeled carbon at each and every step.