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Do mitochondria and chloroplasts have ribosomes that are similar in size and structure to those of bacteria?
Wiki User
∙ 7y ago
Yes, they do - this is one piece of evidence used to support the endosymbiotic theory. This states that Eukaryotic cells arose from Prokaryotic cells that engulfed other Prokaryotic cells.
The DNA found in mitochondria and chloroplasts is similar in size and shape (circular) to that of bacteria.
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoNo. Although Prokaryote and eukaryote both contain ribosomes, they are remarkably different.
Wiki User
∙ 13y agono because chloroplasts gives food to plants and give it color while the ribosomes gives energy to the endoplasmic reticulum.
Wiki User
∙ 7y agoYes.Yes they have 70s ribosomes.This is same as bacteria
Wiki User
∙ 11y agoyes they do, the mitochondrial ribosome resembles bacterial 70s ribosome as compare to eukaryotic cytosolic ribosome
Wiki User
∙ 11y agoyes for the sites of protein synthesis.
Wiki User
∙ 7y agoYes.
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Discuss evidence that supports the endosymbiotic theory of eukaryotic evolution?
1.) Mitochondria and plastids are relatively the same size as bacteria 2.) Mitochondria and plastids have nucleiod DNA molecules - just like bacteria. 3.) Mitochondria and plastids reproduce the same way as bacteria - binary fission.
What part of the cell contains DNA apart from the nucleus?
The mitochondria contain their own DNA in plants and animals; and chloroplasts contain their own DNA in plants and other photosynthetic organisms. Both of these structures divide (almost like cells) inside the cells.*This is also evidence for the theory of endosymbiosis, in which early cells ate early prokarotic cells (bacteria) and gained new organelles.
What does ribosomes do in a bacteria cell?
A bacterial cell contains about 10,000 ribosomes which co up to 30% of the weight of the bacterium. In contrast to most eukaryote ribosomes, the bacterial ribosomes do not appear to be attached to internal cell membranes, but are found free in the cytoplasm. In functionally, active bacteria the cytoplasm is packed -with free and randomly distributed ribosomes. This dense packing may mask any attachment to internal membranes. Strings of ribosomes have been found loosely attached to the inside of the plasma membrane.
Bacteria are much smaller than most?
Bacteria is typically smaller than Eukaryotes. In fact, Eukaryotes have an organelle called the mitochondria which resemble an enveloped bacteria.
What is the endosymbotic theory?
This theory states that the organelles found in cells were once their own independent cells. Throughout time, these independent organelles were consumed by bigger cells and not digested, but used in exchanged for their services.
Do mitochondria and chloroplasts contain ribosomes?
Yes.They have 70s ribosomes. They are similar to bacteria
What chloroplasts and mitochondria have in common?
Both of them have 70s ribosomes,DNA,enzymes etc.They both are pre existed bacteria.
Why is ribosomes present in chloroplast and mitochondria?
Ribosomes are present in chloroplasts and mitochondria because both organelles have their own DNA and protein synthesis machinery. They need ribosomes to translate the genetic information from their DNA into proteins that are essential for their proper functioning. Additionally, chloroplasts and mitochondria are believed to have originated from ancient bacteria that were engulfed by a host cell, and these bacteria-like organelles still retain some of the features of their bacterial ancestors, including the presence of ribosomes.
How does bacteria differ from eukaryotes?
Bacterial cells have a simpler structure. They do not have a separate nucleus or organelles like mitochondria or chloroplasts.
Discuss evidence that supports the endosymbiotic theory of eukaryotic evolution?
1.) Mitochondria and plastids are relatively the same size as bacteria 2.) Mitochondria and plastids have nucleiod DNA molecules - just like bacteria. 3.) Mitochondria and plastids reproduce the same way as bacteria - binary fission.
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.
Are ribosomes located in bacteria fungi protists plant and animal cells?
Yes! Ribosomes occur in the cytoplasm of all cells, prokaryotic ( the cells of bacteria) and eukaryotic (cells of animals, plants, and fungi). They occur in mitochondria and chloroplasts, too. The ribosomes of prokaryotic cells are distinctly smaller than those in eukaryotes. Interestingly, the ribosomes in mitochondria and chloroplasts are similar in size to those of prokaryotes, and this is just one of the items of evidence that support the theory that these two organelles evolved from free-living prokaryotic ancestors.
How chloroplast is similar to bacterium?
They got circular DNA. They also have 70s ribosomes.
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 type of cells have ribisomes?
Ribosomes are found in prokaryotic and eukaryotic cells. They are present in mitochondria, chloroplasts and bacteria. The ribosomes found in prokaryotes are smaller in size and are found floating in the cytoplasm of the cell. In eukaryotes ribosomes are associated with the endoplasmic reticulum to form the rough endoplasmic reticulum.
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 mitochondria and chloroplasts endosymbiotic?
Mitochondria and chloroplasts are thought to have originated as prokaryotic endosymbionts: True
