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List 3 features of mitochondria that suggest these organelles were once free-living aerobic bacteria?
Amie93
Here are some of the main pieces of evidence to support the theory of the endosymbiotic origin of mitochondria. They also apply to chloroplasts.
1
Mitochondria are a similar size and shape to bacteria.
2
A mitochondrion has two membranes around it. The outer one is chemically like a eukaryotic membrane; the innerchemically resembles a prokaryotic one.
3
Mitochondria contain DNA. This is in the form of a loop (sometimes referred to as a circular molecule) as in bacteria.
4
Mitochondria contain ribosomes, which in size and chemistry more closely resemble prokaryotic ribosomes than eukaryotic ones.
5
Mitochondria divide by a process very like the binary fission seen in bacteria.
Wiki User
∙ 13y ago
Anonymous
Wiki User
∙ 14y ago16S ribosomes
A chromosome containing some (but not all) mitochondrial genes
A double membrane which could correspond to the mitchondrial cell's original membrane plus the remains of the phagosome that originally engulfed the free-living bacterium.
Wiki User
∙ 10y agosorry i couldnt help you. im actually looking for the same thing.
Wiki User
∙ 12y agoMitochondria have their own DNA
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What is a cell features that is absent in a bacterial cell?
Bacteria cells are prokaryotic, meaning they have no nucleus or organelles. They have 1 strand of DNA. Human, animal and plant cells are eukaryotic.
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.
Why is your mitochondria has its own DNA?
It is thought that mitochondria became part of eukaryotic cells by a process known as endosymbiosis. This means that, at one time, mitochondria were free living organisms and, as such, had to be able to live on their own. This is why they have DNA, ribosomes, and enzymes. The free living cells needed DNA and ribosomes to make proteins, such as enzymes. When they were endocytosed (engulfed) by other cells, they kept these things and became organelles in charge of making energy in the new cells.
How are mitochondria and chloroplast similar to bacteria cells?
"The mitochondrion and the chloroplast both have a number of unusual features that distinguish them from other organelles: they contain their own DNA that loops around like that of bacteria, they manufacture many of their own proteins, and they both reproduce by binary fission. This is very similar to what bacteria do. The similarity has led many scientists to conclude that these organelles may have evolved from independent bacteria that took up residence in early eukaryotic cells billions of years ago. These bacteria eventually became so dependent on their hosts, and vice versa, that they have essentially become one organism" (Beyond Books, Apex Learning Inc.)http://www.beyondbooks.com/lif71/4g.asp
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.
Two principal organelles of eukaryotes that share features with one another and with bacteria from which they apparently were derived are the?
mitochondria and chloroplasts
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 is a cell features that is absent in a bacterial cell?
Bacteria cells are prokaryotic, meaning they have no nucleus or organelles. They have 1 strand of DNA. Human, animal and plant cells are eukaryotic.
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.
Do bacteria have a organelle?
Yes, they have Ribosomes. ^I do not want to change the answer to no because I am not 100% sure of it, but I do know that Ribosomes are not considered organelles. Ribosomes are proteins that are free floating in bacteria. Organelles are usually specialized, membrane-bound features of a cell.
Why is your mitochondria has its own DNA?
It is thought that mitochondria became part of eukaryotic cells by a process known as endosymbiosis. This means that, at one time, mitochondria were free living organisms and, as such, had to be able to live on their own. This is why they have DNA, ribosomes, and enzymes. The free living cells needed DNA and ribosomes to make proteins, such as enzymes. When they were endocytosed (engulfed) by other cells, they kept these things and became organelles in charge of making energy in the new cells.
How are mitochondria and chloroplast similar to bacteria cells?
"The mitochondrion and the chloroplast both have a number of unusual features that distinguish them from other organelles: they contain their own DNA that loops around like that of bacteria, they manufacture many of their own proteins, and they both reproduce by binary fission. This is very similar to what bacteria do. The similarity has led many scientists to conclude that these organelles may have evolved from independent bacteria that took up residence in early eukaryotic cells billions of years ago. These bacteria eventually became so dependent on their hosts, and vice versa, that they have essentially become one organism" (Beyond Books, Apex Learning Inc.)http://www.beyondbooks.com/lif71/4g.asp
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.
Which cell structure is found in all cells?
A cell membrane (a cell wall in plants). Ribosomes are found in prokaryotic cells, and eukaryotic cells have such features as the nucleus, vacuoles, and mitochondria, as well as many specialized organelles.
Is corn eukaryotic?
The cells of which the corn plant is made up of are eukaryotic cells. They have all the features such as nucleus and organelles such mitochondria and an endoplasmic reticulum. More primitive forms of life such as bacteria are prokaryotes and lack these things except they do have ribosomes like eukatyotes. Genetic information is processed differently in prokaryotes and eukaryotes but that is another question altogether.;)
What are the distinguishing characteristics of the freeliving members of the Sarcodina Mastigophora and Ciliophora?
they all move differently Sarcodina- psedopod Mastigophora- flagella Ciliophora- cilliathis does not show features this tells thing that are in it no persuading details
Name 5 organelles of an eukaryotic cell?
As opposed to prokaryotes, eukaryotes have a clearly definable nucleus to store DNA. Obviously, the organelles present vary from cell to cell, depending hugely on each cell's function. Mitochondria are usually found, as are ribosomes(which are bigger than those in prokaryotes). Some cells will have other features: chloroplasts are found in some plant cells, and vacuoles may be present too.
