Answer:
The presence of organelle DNA in mitochondria and chloroplast supports the theory that mitochondria and chloroplast originated as independent prokaryotic organism.
Explanation:
- The more well documented and generally accepted theory for the origin of eukaryotic organelles is Endosymbiotic Theory. (Margulis 1970).
- Recent evidences justify that organelles have originated from the endosymbiotic association of ingested aerobic and and photosynthetic prokaryote, the precursors of mitochondria and chloroplast respectively.
- Molecular data have played an important role in supporting the xenogenous origin rather than autogenous origin of organelles.
- The idea of independent existence of mitochondria and chloroplast are: they are replicators; they carry genetic information; they have protein synthesising machinery; they have ribosome of prokaryotic type.
- The prokaryotic or bacterial origin of mitochondria and chloroplast is supported by the fact like their DNA is simple ,closed and circular with single point of origin; DNA controls the synthesis of their rRNA and tRNA etc.; They have their own ribosome; antibiotic specificity.
Vitamin K is found in bacteria like E. Coli and aids in blood clotting. Vitamin K aids the body's absorption of mineral calcium, allowing for proper muscle growth and repair.
<h3>What is E. coli?</h3>
E. coli is a Gram-negative, facultative anaerobic, rod-shaped coliform bacterium of the genus Escherichia that is frequently found in the lower intestine of warm-blooded organisms.
Vitamin K, which is found in bacteria such as E. Coli, aids in clot formation.
Vitamin K promotes mineral calcium absorption in the body, allowing for proper muscle repair and growth.
Thus, due to this reason, humans would not be able to repair and grow muscle without bacteria.
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The answer is duplication. Hope this helps.
