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What is the evidence scientists have to support endosymbiosis and the evolution of prokaryotes to eukaryotes?
Wiki User
∙ 7y ago
The difference between eukaryotes and prokaryotes is primarily that prokaryotes don't have membrane-wrapped organelles, including a cell nucleus containing its genetic material and mitochondria, the organelles that produce most of the eukaryote's supply of ATP, a source of chemical energy for cells.
It is thought that organelles like the mitochondria evolved in eukaryotes as a result of endosymbiosis between prokaryotes. A similar origin has been proposed for chloroplasts in algae and plants. This is supported by the fact that these organelles contain their own DNA, and replicate independently from the host cell, as well as by their apparent genetic, morphological and behavioural relationship with various extant prokaryotes.
Wiki User
∙ 11y ago
Wiki User
∙ 8y agoScientists believe that long ago, two separate bacteria (prokaryotes) evolved to become eukaryotes. There were free-living bacteria that are similar to today's mitochondrion. Another prokaryote bacteria digested or engulfed the mitochondrion-like bacteria, and instead of destroying it, it stayed within the bacteria and helped it get energy. After a long time, the two evolved into one, leading to the eukaryotic cell.
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What does your current evidence tell us about the evolution of prokaryotes and eukaryotes?
Prokaryotes are much simpler organisms than eukaryotes. It is thought that eukaryotes evolved from prokaryotes. In both cases the evolution process was lengthy and similar to the evolution of other organisms.
How did the first eukaryote evolve?
Eukaryotes evolved from a process call endosymbiosis. Endosymbiosis states that eukaryotes started as two separate bacterium. The bigger bacteria engulfed the smaller. This is how the mitochondria is enclosed in the cell. There is evidence of this because the mitochondria has its on cell membrane and contains its own DNA.
True or false prokaryotic cells are not effecient?
You'd have to define your conditions for "efficiency". While in general prokaryotes are simpler than eukaryotes, they obviously have their own advantages because both have become very successful over the course of evolution. Prokaryotes can be more efficient than eukaryotes in protein translation, for example, as the use of operons and polycistrons allows for efficiency. But eukaryotic cells have a lot of other advantages. In terms of energy production, eukaryotic cells may contain several mitochondria to generate ATP much faster than a prokaryote could on its own. After all, according to the endosymbiosis theory, mitochondria and chloroplasts have their origins as individual prokaryotes themselves.
What part of the cell theory did Lynn margulis contribute to?
She concluded that some organelles found in eukaryotes were once free-living prokaryotes.
What are the two theories of evolution in a eukaryotic cell?
endosymbiosis
Did the evolution of prokaryotes preceed the evolution of eukaryotes?
Prokaryotes are a lot simpler than eukaryotes so it can be assumed that prokaryotes evolved before eukaryotes.
What does your current evidence tell us about the evolution of prokaryotes and eukaryotes?
Prokaryotes are much simpler organisms than eukaryotes. It is thought that eukaryotes evolved from prokaryotes. In both cases the evolution process was lengthy and similar to the evolution of other organisms.
How does endosymbiosis play a role in the evolution of prokaryotes to eukaryoteAsk us anything?
well i care
Describe how eukaryotes evolved?
Although there is no fossil evidence for the evolution of eukaryotes from prokaryotes, scientists have inferred this through studying modern organisms. Scientists believe that eukaryotes evolved from prokaryotes because both have RNA and DNA as genetic material, contain ribosomes, and also utilize the identical 20 amino acids.
Explain what the terms eukaryote and prokaryote suggest about their evolution?
The terms eukaryote and prokaryote refer to the two distinct types of organisms found in the natural world. Eukaryotes are organisms that have a membrane-bound nucleus, while prokaryotes are organisms that lack a membrane-bound nucleus. This difference in structure suggests that the evolution of eukaryotes, which are more complex and structurally organized, preceded the evolution of prokaryotes, which are simpler and more primitive. Eukaryotes are believed to have evolved from an ancestor that contained a nucleus, which was a critical step in the evolution of life as it allowed for more efficient storage and processing of genetic information. Prokaryotes, on the other hand, had no nucleus and were likely the first form of life on Earth. This suggests that the evolution of prokaryotes followed the evolution of eukaryotes. Overall, the terms eukaryote and prokaryote suggest that eukaryotes are more complex and evolved prior to prokaryotes, which are simpler and more primitive.
How did the first eukaryote evolve?
Eukaryotes evolved from a process call endosymbiosis. Endosymbiosis states that eukaryotes started as two separate bacterium. The bigger bacteria engulfed the smaller. This is how the mitochondria is enclosed in the cell. There is evidence of this because the mitochondria has its on cell membrane and contains its own DNA.
True or false prokaryotic cells are not effecient?
You'd have to define your conditions for "efficiency". While in general prokaryotes are simpler than eukaryotes, they obviously have their own advantages because both have become very successful over the course of evolution. Prokaryotes can be more efficient than eukaryotes in protein translation, for example, as the use of operons and polycistrons allows for efficiency. But eukaryotic cells have a lot of other advantages. In terms of energy production, eukaryotic cells may contain several mitochondria to generate ATP much faster than a prokaryote could on its own. After all, according to the endosymbiosis theory, mitochondria and chloroplasts have their origins as individual prokaryotes themselves.
What part of the cell theory did Lynn margulis contribute to?
She concluded that some organelles found in eukaryotes were once free-living prokaryotes.
What are the two theories of evolution in a eukaryotic cell?
endosymbiosis
What organelle physically isolates DNA?
The nucleus houses the DNA that contains the majority of a eukaryotic genome in the form of chromosomes. Prokaryotes do not have a nucleus. It should be noted, however, that eukaryotes also have DNA in mitochrondria, which are thought to be prokaryotes that were engulfed, DNA and all, at some point during evolution.
What comes between first eukaryotes and first terrestrial eukaryotes on a timeline?
evolution of first multicellular organisms
When did the endosymbiotic theory happen?
The first eukaryotic organisms were formed by the process known as endosymbiosis whereby once independent microorganisms entered cells of other independent microorganisms and established symbiotic relationships with each other.
