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Name: mortman
Status: N/A
Age: N/A
Location: N/A
Country: N/A
Date: Around 1993


Question:
What is the purpose of the mitochondria which float around inside of a cell?



Replies:
Mitochondria produce energy for the cell in the form of a compound called ATP. By a process known as "oxidative phosphorylation", mitochondria take energy derived from nutrients that the organism provides to its cells through the bloodstream, and oxygen provided to the cell, and convert the energy into ATP. ATP has three phosphate chemical groups linked to it by special bonds. When one of these bonds is broken, converting 3 phosphates (ATP) to 2 (ADP), energy is released that the cell can then use for other purposes, such as contraction (in the case of a muscle) or other things.

profbill


Mitochondria have received a lot of attention recently because they have their own DNA which inherited only from the mother. by comparing mitochondria DNA from people all over the world, geneticists can estimate how long homo sapiens has been around, and the surprising results were: only a few hundred thousand years and it looks like we all descended from one mother! This is called the Eve theory and is VERY controversial. Some scientist believe that mitochondria were once independent life, and that a symbiotic relationship arose between them and early, primitive single-cell plants and animals. That would help explain why they have their own DNA.

jade



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