What is electron transfer phosphorylation?
Electron Transfer Phosphorylation. Happens in the mitochondria. It means the flow of electrons through the mitochondrial electron transfer chains -> Attaches phosphate to ADP, forms ATP.
Where does electron transfer chain occur?
The electron transport chain activity takes place in the inner membrane and the space between the inner and outer membrane, called the intermembrane space.
Where does ATP phosphorylation occur?
the mitochondria
Oxidative phosphorylation occurs in the mitochondria, and the two reactions (oxidation of NADH or FADH2 and phosphorylation to generate ATP) are coupled by a proton gradient across the inner membrane of the mitochondria (Figure 9).
Where does electron transfer occur in cellular respiration?
The electron carriers take the electrons to a group of proteins in the inner membrane of the mitochondrion, called the electron transport chain. As electrons move through the electron transport chain, they go from a higher to a lower energy level and are ultimately passed to oxygen (forming water).
Where in mitochondria does electron transfer phosphorylation occur quizlet?
Electron transfer in the ETC is coupled to proton transfer from the matrix to the intermembrane space. The reactions of the ETC take place in the outer membrane of mitochondria.
What is the path of electrons from NADH through the electron transport chain?
The path of electron flow is NADH → NADH dehydrogenase complex → ubiquinone → cytochrome b-c1 complex → cytochrome c → cytochrome oxidase complex → molecular oxygen (O2). The respiratory enzyme complexes couple the energetically favorable transport of electrons to the pumping of H+ out of the matrix.
Where does substrate level phosphorylation occur in mitochondria?
Glycolysis does not require oxygen, but oxygen is an important part of ATP production inside the mitochondria. Substrate-level phosphorylation inside the mitochondria occurs during the Krebs cycle, also referred to as the citric acid cycle.
How does phosphorylation occur?
Protein phosphorylation occurs when the phosphoryl group is added to an amino acid. Usually, the amino acid is serine, although phosphorylation also occurs on threonine and tyrosine in eukaryotes and histidine in prokaryotes. The enzyme protein kinase covalently binds a phosphate group to the amino acid.
Is the electron transport chain oxidative phosphorylation?
The electron transport chain is a series of proteins and organic molecules found in the inner membrane of the mitochondria. Electrons are passed from one member of the transport chain to another in a series of redox reactions. Together, the electron transport chain and chemiosmosis make up oxidative phosphorylation.
What are the products of electron transport phosphorylation?
The end products of the electron transport chain are water and ATP. A number of intermediate compounds of the citric acid cycle can be diverted into the anabolism of other biochemical molecules, such as nonessential amino acids, sugars, and lipids.