Final answer:
The Cori cycle converts lactate to pyruvate, playing a role in balancing glucose levels.
Step-by-step explanation:
The Cori cycle converts lactate to pyruvate. The Cori cycle is a process in which lactate produced by muscle cells is transported to the liver, where it is converted back to pyruvate. This pyruvate can then be used by the liver cells to resynthesize glucose. The cycle plays an important role in balancing glucose levels during exercise and periods of fasting.