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Glycolysis and Cellular Respiration

Glycolysis and Cellular Respiration

The Mitochondrion

Following glycolysis, the next process in cellular respiration takes place in a mitochondrion (that's the singular form of mitochondria, the cell's powerhouse organelle). Let's quickly review what a mitochondrion looks like. For cellular respiration, just pay attention to these three important parts:
  • Outer membrane: Just what it sounds like. A membrane on the outside of the mitochondrion. This membrane is made up of a phospholipid bilayer, just like the plasma membrane that surrounds the cell.
  • Inner membrane: A second membrane, on the inside of the outer membrane. The space between the inner and outer membranes is called the intermembrane space. The space on the inside of the inner membrane is the mitochondrial matrix.
  • Cristae: These are wrinkles formed by folding of the inner membrane. The cristae provide a large surface area for cellular respiration, particularly the electron transport chain.
”A diagram of the internal structures of the mitochondrion
An up-close diagram of a mitochondrion.

”A view of a paramecium mitochondria under the microscope.
Up close and personal with a mitochondrion from a paramecium

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