these two processes supply the electrons that are needed for the electron transport chain
Explanation:
Oxidative phosphorylation is the process in which electrons transfer from electron donors to electron acceptors (usually oxygen). These reactions are called redox reactions, and they provide energy used to form ATP.
Electron donors (NADH and FADH2) used in oxidative phosphorylation are produces in some of the catabolic biochemical processes, such as glycolysis, the citric acid cycle, and beta oxidation. The NADH and FADH2 are energy-rich molecules because each of them contains a pair of electrons thus having a high transfer potential. Because of that, oxidative phosphorylation could not happen without first obtaining electron donors in glycolysis and citric acid cycle.
Metallic character refers to the level of reactivity of a metal. Non-metallic character relates to the tendency to accept electrons during chemical reactions. Metallic tendency increases going down a group. Non-metallic tendency increases going from left to right across the periodic table.
Line 1: straight horizontal line Line 2: straight line at a slope Line 3: exponential growth curve Line 4: the topmost curve (the one that initially increases but then starts levels out)
