The student, shrunk down inside an animal cell, must restore energy to their Portable Absorption and Combination Kit (P.A.C.K.) by completing glycolysis. They begin by collecting floating glucose molecules using a laser tool and follow on-screen prompts to gather the required ATP and NAD+ molecules. Once collected, they combine the molecules in their P.A.C.K., triggering the glycolysis reaction. A success panel confirms the production of 2 Pyruvate, 4 ATP, and 2 NADH. The student then stores the charged electron carriers in their P.A.C.K., ensuring they have the necessary energy for the next step in cellular respiration—Pyruvate Oxidation.