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zalisa [80]
3 years ago
11

According to the endosymbiosis theory of the origin of eukaryotic cells, how did mitochondria originate?

Biology
1 answer:
GaryK [48]3 years ago
6 0

Answer:

Mitochondria originated when an ameoba like organism engulfed an aerobic proteobacterium capable of cellular respiration.

Explanation:

Endosymbiotic Theory:

  • The endosymbiotic theory explains the origin of eukaryotic cells and eukaryotic organelles, particularly the chloroplast and mitochondria.
  • According to this theory, a prokaryotic ameoba like organism increased in size and gradually developed infoldings of its plasma membrane. These infoldings gradually developed into an endomembrane that enclosed the genetic material and nucleus.
  • This cell then engulfed a proteobacterium capable of cellular respiration. Over time, this cell thrived as oxygen increased in the atmosphere of the Earth. The proteobacterium survived as an endosymbiont and later evolved into mitochondria.
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