Final answer:
Gluconeogenesis requires a total of 4 ATP and 2 GTP molecules combined.
Step-by-step explanation:
The process of gluconeogenesis requires a total of 4 ATP and 2 GTP molecules combined. Gluconeogenesis is the synthesis of glucose from non-carbohydrate sources like pyruvate, lactate, and certain amino acids. It is essentially the reverse of glycolysis, but with a few bypass reactions and a net consumption of ATP and GTP.