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Mitochondria and chloroplasts are thought to have originated as prokaryotic endosymbionts: True
Wiki User
∙ 13y ago
Wiki User
∙ 10y agoYes,they are endosymbiotic organells.They were pre existed bacteria.
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How mitochondria or chloroplasts evolved?
Endosymbiotic theory describes the evolution of mitochondria and chloroplast.According to it,photosynthetic bacteria and aerobic bacteria engulfed by a eukaryotic cell turned into chloroplast and mitochondria.
What is endosymbiotic theary?
This theory tries to explain the double membranes belonging to mitochondria and chloroplasts. It suggests that both organelles once used to be single organisms, as in they were not mere parts of a cell.
What did chloroplasts evolve from according to the endosymbiotic hypthesis?
Photosynthetic bacteria has evolved. Symbiotic living has turned it into chloroplasts
Why do scientists suspect that mitochondria and chloroplasts were originally prokaryotic cells?
Scientists saw that the membranes of mitochondria and chloroplasts resembled the cell membranes of free-living prokaryotes. This led to two hypotheses. One proposed that mitochondria evolved from endosymbiotic prokaryotes that were able to use oxygen to generate energy rich ATP. The other proposed that chloroplasts evolved from endosymbiotic prokaryotes that had he ability to photosynthesize. Mitochondria and chloroplasts share many features with free-living bacteria, such as there ribosomes have similar size and structure and they reproduce by binary fission. These similarities provide strong evidence of a common ancestry between bacteria and the organelles of living eukaryotic cells.
What is endosymbiotic hypothesis?
The endosymbiotic hypothesis postulates that an early eukaryotic cells lacking mitochondria and chloroplasts phagocytosed early aerobic prokaryotes and photosynthetic prokaryotes and rather than digesting them, formed a symbiotic relationship with them, offering them nutrients and shelter (therefore the 'endo-' part) and getting very efficient energy generating systems in return. This hypothesis was proposed after mitochondria and chloroplasts were found to share many structure and mechanistic similarities with aerobic and photosynthetic prokaryotes, and that mitochondria and chloroplasts contained their own genetic material and capable of producing some proteins. The hypothesis is the norm now as to the evolution of mitochondria and chloroplasts however many questions remain to be solved such as whether the evolution of eukaryotism occurred before or after the assimilation of other cells through endosymbiosis.
What is the endosymbiotic theory?
The Endosymbiotic Theory is a theory about how mitochondria and chloroplasts formed. The theory suggests that both the mitochondria and chloroplasts were once prokaryotic cells that were ingested but not digested by eukaryotic cells. This would explain why both have their own DNA.
Pre-eukaryotic cells did not contain?
Chloroplasts and mitochondria according to the endosymbiotic theory.
What statement fails to support the endosymbiotic theory?
Mitochondria and chloroplasts reproduce independently from the cell.
What two organelles are derived from symbiotic bacteria?
Chloroplasts and mitochondria. It is believed they were engulfed by the cells because of the dual membrane present on both. Both are believed to have originated from an endosymbiotic bacteria. Mitochondria's inner matrices contain DNA, and they have many features similar to those of bacteria. Chloroplasts are believed to have come from an endosymbiotic cyanobacteria.
What organelles that have a double membrane?
Nucleus Mitochondria
How mitochondria or chloroplasts evolved?
Endosymbiotic theory describes the evolution of mitochondria and chloroplast.According to it,photosynthetic bacteria and aerobic bacteria engulfed by a eukaryotic cell turned into chloroplast and mitochondria.
What theory states that mitochondria and chloroplasts are derived from free-living prokaryotic cells?
Endosymbiotic theory describes that.It shows photosynthetic and aerobic bacteria engulfed by eulariyotic cells turned into chloroplst and mitochondria.
What is the evidence for endosymbiotic hypothesis?
The endosymbiotic hypothesis postulates that an early eukaryotic cells lacking mitochondria and chloroplasts phagocytosed early aerobic prokaryotes and photosynthetic prokaryotes and rather than
Is a mitochondria a bacterial Cell?
Yes, according to the The endosymbiotic theory:The endosymbiotic theory concerns the mitochondria, plastids (e.g. chloroplasts), and possibly other organelles of eukaryotic Cells. According to this theory, certain organelles originated as free-living bacteria that were taken inside another Cell as endosymbionts. Mitochondria developed from proteobacteria (in particular, Rickettsiales or close relatives) and chloroplasts from cyanobacteria.
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.
What is endosymbiotic theary?
This theory tries to explain the double membranes belonging to mitochondria and chloroplasts. It suggests that both organelles once used to be single organisms, as in they were not mere parts of a cell.
What organelle is responsible for converting food into energy?
Mitochondria and Chloroplasts are involved in energy conversion.
