mitochondria definition

Body Structures & Functions Updated
13th Edition
ISBN:9780357191606
Author:Scott
Publisher:Scott
Chapter7: Muscular System
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mitochondria definition 

 

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Step 1 Mitochondria are self replicating and have two membranes.

They have their own DNA which is similar to bacterial DNA. They have ribosomes, enzymes and transport systems which are similar to those in bacteria. They produce energy in the form of ATP (adenosine triphosphate). They are also involved in the storage of calcium, heat generation. They can be spherical/cylindrical or branched. It has an inner and an outer membrane separated by an intermembrane space. The matrix of the mitochondria has double stranded DNA which is mostly circular. It mostly shows maternal inheritance because the paternal mitochondria are destroyed by the enzymes in the egg on fertilization.

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