Final answer:
Glycogenesis is the chemical pathway that enables muscle cells and the liver to store glucose as glycogen. It occurs in both liver and muscle cells, allowing for a longer-lasting source of ATP during exercise.
Step-by-step explanation:
The chemical pathway that enables muscle cells and the liver to store glucose as glycogen is called glycogenesis.
Glycogenesis is the process of converting excess glucose into glycogen for storage. It occurs in both liver and muscle cells. When blood sugar levels drop, glycogen is hydrolyzed into glucose 1-phosphate and converted into glucose-6-phosphate, which enters the glycolytic pathway.
This process allows for the storage of glucose as glycogen, providing a longer-lasting source of ATP during exercise.