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Learn Introductory Crop Physiology with Braimy – B.SC Agriculture
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  • Powerhouse of cells.
  • Sphere, rod or filamentous body.
  • 5 µm diameter and 7 µm in length
  • Inner membrane has large infoldings called cristae and is site of oxidative phosphorylation and electron transport involved in ATP production.
  • Central matrix is the site of Citric acid cycle and fatty acid breakdown.

Enzyme present: ATP synthetase, pyruvate dehydrogenase, Adenine nucleotide translocase, glyceral 3-phosphate dehydrogenase, succinate dehydrogenase, cytochrome c oxidase.


  • Oxidative phosphorylation
  • Conserve energy for cellular respiration and urea cycle.

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