Hifumi's Study Notes📕Cegep 1BiologyMitochondrion

Mitochondrion

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Cegep1

Biology

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105 words

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1 minute

Membrane-bound organelle that transforms energy with cellular respiration
Pl. mitochondria

Number varies with cellular activity

Has two layers of membrane:

Outer membrane: smooth and permeable
Inner membrane:
- Folded into cristae to increase the surface area
- Contains enzymes involved in cellular respiration, e.g. ATP synthase
- Contains electron transport chain (abbr. ETC)
  - 4 enzyme complexes (I, II, III & IV)
  - 2 $e^{-}$ carriers (coenzyme Q & cytochrome C)
- Inner space, called matrix, contains DNA, ribosomes and enzymes.

[!abstract] Crista
Shelf-like infolding of the inner mitochondrial membrane
Pl. cristae

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