Making new glucose from pyruvate or lactate is:

1. It supplies glucose when stores run low. 2. Amino acids can also feed it. 3. Gluconeogenesis is the synthesis of new glucose molecules from pyruvate, lactate, glycerol or amino acids. 4. So the answer is gluconeogenesis. _Source: OpenStax 'Anatomy and Physiology 2e', Ch 24 'Metabolism and Nutrition'_