What is the fate of glucose 6-phosphate that enters the pentose phosphate pathway in the flight muscles of hummingbirds? Glucose 6-phosphate is converted to carbon dioxide and ribose 5-phosphate. Glucose 6-phosphate is converted to ribose 5-phosphate. Glucose 6-phosphate is converted to carbon dioxide and pyruvate. Glucose 6-phosphate is converted to carbon dioxide.