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How many protons are translocated across the inner mitochondrial membrane by complex iv for every pair of electrons passing through the electron transport chain?

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Two protons are translocated across the inner mitochondrial membrane by complex iv for every pair of electrons passing through the electron transport chain.

What is inner mitochondrial membrane?

  • The mitochondrial membrane that divides the intermembrane gap from the mitochondrial matrix is known as the inner mitochondrial membrane (IMM).
  • As a result, the inner mitochondrial membrane maintains the proton gradient that powers oxidative phosphorylation and serves as a functional barrier to the passage of tiny molecules between the cytosol and the matrix.
  • Cristae are the name for the inner membrane folding of mitochondria.
  • They broaden the surface.
  • The inner or cytoplasmic membrane controls the flow of nutrients, metabolites, macromolecules, and information into and out of the cytoplasm and preserves the proton motive force necessary for energy storage.
  • It is impermeable to polar molecules.
  • The inner membrane of E is connected to more than 100 distinct proteins.
  • Similar to the cell membrane, the mitochondrial inner membrane is mostly composed of a phospholipid bilayer.
  • Several proteins that function to carry out the electron transport chain are embedded in this bilayer.
  • The membrane's surface area is increased by folds called christae. 

Learn more about inner mitochondrial membrane here:

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