How do you think this is related to metabolic processes such as the Citric Acid cycle and Electron Transport chain?

The Citric Acid cycle and Electron Transport chain processes are part of a set of steps that occurs in cellular respiration.

During cellular respiration, a glucose molecule is gradually decomposed into carbon dioxide and water. Along the way, some ATPs are produced directly in the reactions that transform glucose. However, much later ATP is produced in a process called oxidative phosphorylation. Oxidative phosphorylation is fueled by the movement of electrons through the electron transport chain, a series of proteins incorporated into the inner membrane of mitochondria. Thus, Citric Acid cycle is responsible for degrading the acetyl CoA produced by previous reactions (glycolysis and pyruvate oxidation) producing four more carbon dioxide molecules, plus energized electrons and H + ions, which will be captured by NAD + and another acceptor. of electrons and hydrogen called FAD (Flavine Adenine Dinucleotide), originating NADH and FADH2 molecules. During this process, two GTP (Guanosine triphosphate - very similar to ATP) molecules are also formed. After this process, through the electron transport chain reaction NAD and FADH2 produced in the other steps deposit their electrons in the electron transport chain returning to the "pure" form (NAD + and FADH2). As electrons travel down the chain, energy is released that is used to pump protons out of the matrix, forming a gradient. Protons return to the matrix by means of an enzyme called ATP synthase, producing ATP. At the end of the electron transport chain, oxygen receives electrons and acquires protons to form water.