Final answer:
During glucose breakdown, high energy electrons are transferred to an electron acceptor called water.
Step-by-step explanation:
As glucose is broken down, high energy electrons are transferred to an electron acceptor called water. This process occurs during cellular respiration, where glucose is ultimately broken down into carbon dioxide and water, releasing energy that is used to make ATP. The energy released in this process is captured and transferred to ATP through substrate-level phosphorylation and oxidative phosphorylation. Phosphorylation is a chemical process of adding a phosphate group to an organic compound.