Mitochondria

• Mitochondria are found in almost all cells, except those of prokaryotes.
• Mitochondria

  Singular: mitochondrion
• Mitochondria are the powerhouse of the cell. Inside them, oxygen is used to release energy from glucose, in the process called aerobic respiration.
• Cells that use a lot of energy have a lot of mitochondria.
• Muscle cells are tightly packed with mitochondria.
• The organelle that releases energy stored in food is the mitochondria.