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Both have their own DNA, and manufacture their own RNA and proteins. When the DNA was examined, it was resembled the DNA in free-living organsims known as blue-green algae, so it was hypothesized that these organelles were once free-living and then became endosymbionts with another organism.

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15y ago
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14y ago

One good piece of evidence is that mitochondria have their own DNA that is arranged in a unbroken circle just as a prokaryotes DNA is.

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8y ago

They have own DNA. They have 70s ribosomes. They replicate them selves

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10y ago

Because they have their own DNA.Also they have 70s ribosomes like bacteria.

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12y ago

Yes

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Q: What evidence indicates that mitochondria and chloroplasts were once free-living organisms?
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Mitochondria and chloroplasts descendants of what kind of organisms?

Prokaryotes


What parts of a cell do scientists think were once free-living organisms?

Mitochondria and chloroplasts are thought to have once been a free prokaryotic cell.


What does the endosymbiotic theory purpose?

concerns the origins of mitochondria and plastids (e.g. chloroplasts), which are organelles of eukaryotic cells. According to this theory, these organelles originated as separate prokaryotic organisms which were taken inside the cell as endosymbionts. Mitochondria developed from proteobacteria (in particular, Rickettsiales or close relatives) and chloroplasts from cyanobacteria. concerns the origins of mitochondria and plastids (e.g. chloroplasts), which are organelles of eukaryotic cells. According to this theory, these organelles originated as separate prokaryotic organisms which were taken inside the cell as endosymbionts. Mitochondria developed from proteobacteria (in particular, Rickettsiales or close relatives) and chloroplasts from cyanobacteria. concerns the origins of mitochondria and plastids (e.g. chloroplasts), which are organelles of eukaryotic cells. According to this theory, these organelles originated as separate prokaryotic organisms which were taken inside the cell as endosymbionts. Mitochondria developed from proteobacteria (in particular, Rickettsiales or close relatives) and chloroplasts from cyanobacteria.


Mitochondria and chloroplasts?

1)Mitochondria occur in the cells of aerobic organisms with the exception of mammalian RBCs while Chloroplasts occur in the cells of green photosynthetic parts of plants. 2)Mitochondria is colourless while Chloroplasts is green in colour. 3) Mitochondria's shape is rod-like or sausage-shaped while Chloroplasts are generally disc-like in outline. 4) Mitochondria liberate energy while Chloroplasts trap solar energy and convert it into chemical energy. 5) Mitochondria perform oxidation of food while Chloroplasts synthesize food by photosynthesis. 6) Mitochondria consumes O2 and liberate CO2 while Chloroplasts consumes CO2 and liberate O2.


Compare the functions of chloroplasts and mitochondria?

Mitochondria is where cellular respiration takes place and where most energy in the form of ATP is generated. Chloroplasts convert sunlight energy into chemical energy stored in sugar molecules. Mitochondria uses chemical energy; chloroplasts use light energy.

Related questions

Mitochondria and chloroplasts descendants of what kind of organisms?

Prokaryotes


What parts of a cell do scientists think were once free-living organisms?

Mitochondria and chloroplasts are thought to have once been a free prokaryotic cell.


Which is used as evidence for the idea that the domain Eukarya evolved from unicellular organisms?

Mitochondria and chloroplasts have their own DNA.


How are chloroplasts and mitochondria similar to bacteria?

Both mitochondria and choloplasts were thought to be single-celled bacteria that got "eaten" by other organisms, eventually giving rise to complex organisms that have mitochondria or chloroplasts in their cells (see endosymbiotic theory). Consequently, both mitochondria and chloroplasts are very similar to bacteria. One of the similarities is that both have their own DNA and replicate independently of the rest of the cell.


Is used as evidence for the idea that multicellular organisms evolved from prokaryotes?

Mitochondria and chloroplasts have their own DNA.


What is used as evidence for the idea that the domain Eukarya evolved from unicellular organisms?

mitochondria and chloroplasts have their own DNA


What does the endosymbiotic theory purpose?

concerns the origins of mitochondria and plastids (e.g. chloroplasts), which are organelles of eukaryotic cells. According to this theory, these organelles originated as separate prokaryotic organisms which were taken inside the cell as endosymbionts. Mitochondria developed from proteobacteria (in particular, Rickettsiales or close relatives) and chloroplasts from cyanobacteria. concerns the origins of mitochondria and plastids (e.g. chloroplasts), which are organelles of eukaryotic cells. According to this theory, these organelles originated as separate prokaryotic organisms which were taken inside the cell as endosymbionts. Mitochondria developed from proteobacteria (in particular, Rickettsiales or close relatives) and chloroplasts from cyanobacteria. concerns the origins of mitochondria and plastids (e.g. chloroplasts), which are organelles of eukaryotic cells. According to this theory, these organelles originated as separate prokaryotic organisms which were taken inside the cell as endosymbionts. Mitochondria developed from proteobacteria (in particular, Rickettsiales or close relatives) and chloroplasts from cyanobacteria.


What does the theory of endosymbiosis explain?

concerns the origins of mitochondria and plastids (e.g. chloroplasts), which are organelles of eukaryotic cells. According to this theory, these organelles originated as separate prokaryotic organisms which were taken inside the cell as endosymbionts. Mitochondria developed from proteobacteria (in particular, Rickettsiales or close relatives) and chloroplasts from cyanobacteria. concerns the origins of mitochondria and plastids (e.g. chloroplasts), which are organelles of eukaryotic cells. According to this theory, these organelles originated as separate prokaryotic organisms which were taken inside the cell as endosymbionts. Mitochondria developed from proteobacteria (in particular, Rickettsiales or close relatives) and chloroplasts from cyanobacteria. concerns the origins of mitochondria and plastids (e.g. chloroplasts), which are organelles of eukaryotic cells. According to this theory, these organelles originated as separate prokaryotic organisms which were taken inside the cell as endosymbionts. Mitochondria developed from proteobacteria (in particular, Rickettsiales or close relatives) and chloroplasts from cyanobacteria.


Compare contrast the chloraplast with mitochondria?

1)Mitochondria occur in the cells of aerobic organisms with the exception of mammalian RBCs while Chloroplasts occur in the cells of green photosynthetic parts of plants. 2)Mitochondria is colourless while Chloroplasts is green in colour. 3) Mitochondria's shape is rod-like or sausage-shaped while Chloroplasts are generally disc-like in outline. 4) Mitochondria liberate energy while Chloroplasts trap solar energy and convert it into chemical energy. 5) Mitochondria perform oxidation of food while Chloroplasts synthesize food by photosynthesis. 6) Mitochondria consumes O2 and liberate CO2 while Chloroplasts consumes CO2 and liberate O2.


Compare functions of chloroplast and mitochondria?

1)Mitochondria occur in the cells of aerobic organisms with the exception of mammalian RBCs while Chloroplasts occur in the cells of green photosynthetic parts of plants. 2)Mitochondria is colorless while Chloroplasts is green in color. 3) Mitochondria's shape is rod-like or sausage-shaped while Chloroplasts are generally disc-like in outline. 4) Mitochondria liberate energy while Chloroplasts trap solar energy and convert it into chemical energy. 5) Mitochondria perform oxidation of food while Chloroplasts synthesize food by photosynthesis. 6) Mitochondria consumes O2 and liberate CO2 while Chloroplasts consumes CO2 and liberate O2.


What does chloroplast and mitochondria have?

1)Mitochondria occur in the cells of aerobic organisms with the exception of mammalian RBCs while Chloroplasts occur in the cells of green photosynthetic parts of plants. 2)Mitochondria is colourless while Chloroplasts is green in colour. 3) Mitochondria's shape is rod-like or sausage-shaped while Chloroplasts are generally disc-like in outline. 4) Mitochondria liberate energy while Chloroplasts trap solar energy and convert it into chemical energy. 5) Mitochondria perform oxidation of food while Chloroplasts synthesize food by photosynthesis. 6) Mitochondria consumes O2 and liberate CO2 while Chloroplasts consumes CO2 and liberate O2.


How are mitochondria and chloroplast?

1)Mitochondria occur in the cells of aerobic organisms with the exception of mammalian RBCs while Chloroplasts occur in the cells of green photosynthetic parts of plants. 2)Mitochondria is colourless while Chloroplasts is green in colour. 3) Mitochondria's shape is rod-like or sausage-shaped while Chloroplasts are generally disc-like in outline. 4) Mitochondria liberate energy while Chloroplasts trap solar energy and convert it into chemical energy. 5) Mitochondria perform oxidation of food while Chloroplasts synthesize food by photosynthesis. 6) Mitochondria consumes O2 and liberate CO2 while Chloroplasts consumes CO2 and liberate O2.