Final answer:
The physical pathway for EI is the Embden-Meyerhof pathway, which converts glucose to pyruvate. It produces ATP and serves as a source of energy for the cell.
Step-by-step explanation:
The physical pathway for EI (Embden-Meyerhof pathway) is a metabolic pathway that converts glucose to pyruvate. This pathway occurs in the cytoplasm of all living cells and is the first step in both aerobic and anaerobic respiration.
During the Embden-Meyerhof pathway, one observation that provides scientific evidence for this pathway is the production of ATP molecules. This pathway produces a net gain of 2 ATP molecules per glucose molecule through substrate-level phosphorylation.
The implications of this pathway are that it enables the cell to generate ATP, the energy currency of the cell, and also produces pyruvate, a molecule that can be further metabolized in other pathways such as the Krebs cycle.