THE POINT OF THE ELECTRON TRANSPORT CHAIN IS TO CREATE ATP!
The electron transport chain’s purpose is gathering the energy of NADH and FADH2 which are reduced coenzymes, which were formed in Glycolysis and the Kreb's cycle stage of cellular respiration. All of the free energy of the reduced coenzymes are created to make ATP.
The number of ATP that are formed in the electron transport chain is 36.
NADH and FADH2 are formed from the hydrogen atom electrons which are created with assistance of the electron transport chain. The components that are associated with the electron transport chain is arranged from left to right in order of increasing electronegativity, from HADH dehydrogenase which is the weaker attractor to cytochrome oxidase which is the strongest attractor at the end.
ELECTRON TRANSPORT
The process are as follows:
1). NADH gives up it's 2 electrons to the first protein complex (NADH dehydrogenase).
2). Mobile electron carriers (Ubiquinone and Cytochrome C) shuttle the 2 electrons from one protein complex to the next until they Cytochrome Oxidase complex which is the final protein complex in the chain.
3). Finally, the enzyme cytochrome cytochrome oxidase, which is part of this complex, catalyzes the reaction between the electrons, protons and molecular oxygen to form water.
The energy that has been lost from the electron pair in the electron transfer is used to pump hydrogen ions into the intermembrane space, by creating a gradient in the mitochondrial membrane
OXIDATIVE ATP SYNTHESIS (how ATP is made)
Protons that are in the intermebrane space of the mitochondria stores free energy. The mitochondria because a H+ reservoir because the mitochondrion membrane is impermeable to protons.
OXIDATIVE ATP SYNTHESIS (how ATP is made)
Protons that are in the intermebrane space of the mitochondria stores free energy. The mitochondria because a H+ reservoir because the mitochondrion membrane is impermeable to protons.
Protons are forced to pass through an enzyme called ATP synthase, because they are not able to diffuse through a phospholipid bilayer.
The free energy stored in the electrochemical gradient produces a proton motive force that moves the protons through the ATP SYNTHASE complex. As the protons move through the ATP synthase, the free energy of the electron gradient is reduced. This forces the synthesis from ADP to ATP.
