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Is it true mitochondria and chloroplasts originated in bacteria?
Wiki User
∙ 11y ago
It is thought that chloroplasts and mitochondria were prokaryotic organisms and they were engulfed by a eukaryotic organism and instead of being digested by the cell a symbiotic relationship was formed. this is called endosymbiosis. the first scientist to pioneer this kind of thinking was Mereschkowsky back in 1905.
Taking chloroplast as the example, most of the genes from the chloroplast genome have been intergrated into the nulcear genome. Those that are left are conserved in both the chloroplast genome and the cyanobacteria genome. (the cyanobacteria is the prokaryotic organisms that is thought to have been engulfed, thus creating the ancestor to the modern chloroplast). For example, the gene for bacterial cell division is also found in the chloroplast genome. Comparing both the modern chloroplast genome and the modern cyanobacteria genome it is possilbe to see just how many genes that where originally chloroplast based have jumped ship and gone to the nuclear genome.
Both animals and plants contain mitochondria but only plants contain chloroplasts. This suggests that the endosymbiotic relationship between the eukaryotic cell and the mitcohondria happen before the animal and plant lines diverged.
Wiki User
∙ 15y ago
Wiki User
∙ 11y agoAs a theory, they originated as prokaryotic organisms and through endosymbiotic relationships, eventually formed with more complex eukaryotes as energy processors and creators
Wiki User
∙ 10y agoThey are the same size as bacteria, they contain DNA, They are not derived from the endomembrane system as other organelles are,
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Is mitochondria and chloroplasts endosymbiotic?
Mitochondria and chloroplasts are thought to have originated as prokaryotic endosymbionts: True
Do both chloroplasts and mitochondria lack genetic information in the form of DNA?
true :)
Is this true or false The pyruvic acid produced in electrolysis enters the chloroplasts if the oxygen is present in a cell?
It is false that if oxygen is present in a cell, pyruvic acid in glycolysis enters the chloroplasts. The pyruvic acid enters the mitochondria if oxygen is present in a cell.
Where are genomes found?
Genomes are found in the nucleus of eukaryotic cells, which contain the DNA responsible for encoding all the genetic information of an organism. In prokaryotes, such as bacteria, genomes are found in the nucleoid region, which is not a true nucleus but contains the DNA. However, some organisms also have genomes in other cellular compartments, such as mitochondria or chloroplasts.
Is there a cell with all organelles?
no they dont Yes, for example chloroplasts are not found in all the cells.
Is mitochondria and chloroplasts endosymbiotic?
Mitochondria and chloroplasts are thought to have originated as prokaryotic endosymbionts: True
What oranelle does photosythesise occur?
Photosynthesis occurs in the chloroplasts in plant cells. Only plants do photosynthesis so other organisms don't have chloroplasts as sources of energy, they have mitochondria to get their energy. <not true. some bacteria also have chloroplasts and are able to go through photosynthesis. mleh. :P
Do both chloroplasts and mitochondria lack genetic information in the form of DNA?
true :)
Do mitochondria and chloroplasts lack genetic information?
That is not true. They contain their own DNA
What enabled the formation of true living cells?
Endosymbiosis enabled the formation of true living cells. This concept explains the origin of two biological structures, the mitochondria and the chloroplasts.
Is the following sentence true or false Both chloroplasts and mitochondria are enclosed by two envelope membranes?
Yes,it is true.They are double membranes.
Is this true or false The pyruvic acid produced in electrolysis enters the chloroplasts if the oxygen is present in a cell?
It is false that if oxygen is present in a cell, pyruvic acid in glycolysis enters the chloroplasts. The pyruvic acid enters the mitochondria if oxygen is present in a cell.
Which do chloroplasts and mitochondria have that other organelles lack?
There is a theory that chloroplast and mitochondria were independent organisms. Since they were, they would have their own DNA. And it is true that they do. It is interesting that you get your mitochondria from only your mother. There are many studies have used mtDNA to trace the evolution and migration of human species, including when the common ancestor to modern humans and Neanderthals lived.
Where are genomes found?
Genomes are found in the nucleus of eukaryotic cells, which contain the DNA responsible for encoding all the genetic information of an organism. In prokaryotes, such as bacteria, genomes are found in the nucleoid region, which is not a true nucleus but contains the DNA. However, some organisms also have genomes in other cellular compartments, such as mitochondria or chloroplasts.
Is there a cell with all organelles?
no they dont Yes, for example chloroplasts are not found in all the cells.
The chlorophyll of the green algae is in chloroplasts True or False The chlorophyll of the green algae is in chloroplasts. True or False?
True SOS user?
What is a membrane bound organelle plant cells?
Mitochondria and Chloroplasts, this is to do with the endosymbiotic theory.
