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Mitochondria and chloroplasts are believed to have developed within eukaryotic cells through a process called endosymbiosis. This theory suggests that these organelles were once independent prokaryotic organisms that were engulfed by a larger host cell. Over time, a mutually beneficial relationship developed between the organelles and the host cell, leading to their integration and specialization within eukaryotic cells.
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What is the evidence for the endosymbiosis hypothesis?
Evidence for the endosymbiosis hypothesis includes similarities between mitochondria/chloroplasts and bacteria (such as DNA structure and ribosomes), the ability of mitochondria/chloroplasts to replicate independently within cells, and historical precedence in the evolution of eukaryotic organisms. Additionally, the presence of a double membrane in mitochondria and chloroplasts supports the idea that these organelles were once free-living bacteria that were engulfed by an ancestral eukaryotic cell.
How did mitochondria and chloroplasts most likely arise in eukaryotic cells?
Mitochondria and chloroplasts most likely arose in eukaryotic cells through a process called endosymbiosis, where a host cell engulfed a prokaryotic cell. Over time, the prokaryotic cell evolved to become an organelle within the host cell, forming a symbiotic relationship. This theory is supported by the similarities between mitochondria and chloroplasts and modern-day bacteria.
In a eukaryotic cell where is most of the DNA?
Nucleus Of The Eukaryotic Cell
Eukaryotic DNA is generally located in the cell?
Eukaryotic DNA is located within the nucleus of the cell, where it is organized into multiple chromosomes. Additionally, small amounts of DNA can also be found in cell organelles, such as mitochondria and chloroplasts. Overall, the majority of the genetic material in eukaryotic cells is contained within the nucleus.
Which of the following are associated with matter and energy transfers in eukaryotic cells?
Mitochondria are associated with energy transfers in eukaryotic cells through the process of cellular respiration. Additionally, the endoplasmic reticulum is involved in the synthesis and processing of proteins and lipids, which are important for cellular function and the transfer of molecules within the cell.
What is the evidence for the endosymbiosis hypothesis?
Evidence for the endosymbiosis hypothesis includes similarities between mitochondria/chloroplasts and bacteria (such as DNA structure and ribosomes), the ability of mitochondria/chloroplasts to replicate independently within cells, and historical precedence in the evolution of eukaryotic organisms. Additionally, the presence of a double membrane in mitochondria and chloroplasts supports the idea that these organelles were once free-living bacteria that were engulfed by an ancestral eukaryotic cell.
How did mitochondria and chloroplasts most likely arise in eukaryotic cells?
Mitochondria and chloroplasts most likely arose in eukaryotic cells through a process called endosymbiosis, where a host cell engulfed a prokaryotic cell. Over time, the prokaryotic cell evolved to become an organelle within the host cell, forming a symbiotic relationship. This theory is supported by the similarities between mitochondria and chloroplasts and modern-day bacteria.
In a eukaryotic cell where is most of the DNA?
Nucleus Of The Eukaryotic Cell
Where are chromosomes found in multicellular organisms?
Chromosomes are found within the nucleus of the cell (in Eukaryotic cells). There are also usually smaller chromosomes in the mitochondria and chloroplasts.
What does the endosymbiotic theory purpose?
concerns the origins of mitochondria and plastids (e.g. chloroplasts), which are organelles of eukaryotic cells. According to this theory, these organelles originated as separate prokaryotic organisms which were taken inside the cell as endosymbionts. Mitochondria developed from proteobacteria (in particular, Rickettsiales or close relatives) and chloroplasts from cyanobacteria. concerns the origins of mitochondria and plastids (e.g. chloroplasts), which are organelles of eukaryotic cells. According to this theory, these organelles originated as separate prokaryotic organisms which were taken inside the cell as endosymbionts. Mitochondria developed from proteobacteria (in particular, Rickettsiales or close relatives) and chloroplasts from cyanobacteria. concerns the origins of mitochondria and plastids (e.g. chloroplasts), which are organelles of eukaryotic cells. According to this theory, these organelles originated as separate prokaryotic organisms which were taken inside the cell as endosymbionts. Mitochondria developed from proteobacteria (in particular, Rickettsiales or close relatives) and chloroplasts from cyanobacteria.
Why do animal cells not have chloraplast?
Chloroplasts (as well as Mitochondria) are endosymbionts. This means that they are cells, living within another cell. Historically, eukaryotic cells had no mitochondria or chloroplasts (and mitochondria and chloroplasts existed by themselves outside of cells). The current hypothesis is that a cell tried to engulf a mitochondria (by phagocytosis) but failed in digesting it. Over time, some of the mitochondrial DNA (mtDNA) became part of the host cell's genome. This cell is a common ancestor to both plants and animals, which is why both have mitochondria. A cell with mitochondria then did the same thing with chloroplasts, absorbing one, and taking some of its ctDNA etc. Because not all cells that had mitochondria absorbed chloroplasts there were cells with mitochondria only, and cells with mitochondria and chloroplasts. The ones with chloroplasts evolved to become plant cells, and those without evolved to become animal cells.
Eukaryotic DNA is generally located in the cell?
Eukaryotic DNA is located within the nucleus of the cell, where it is organized into multiple chromosomes. Additionally, small amounts of DNA can also be found in cell organelles, such as mitochondria and chloroplasts. Overall, the majority of the genetic material in eukaryotic cells is contained within the nucleus.
Which of the following are associated with matter and energy transfers in eukaryotic cells?
Mitochondria are associated with energy transfers in eukaryotic cells through the process of cellular respiration. Additionally, the endoplasmic reticulum is involved in the synthesis and processing of proteins and lipids, which are important for cellular function and the transfer of molecules within the cell.
What is the generally accepted evolutionary process which created the organelles and chloroplasts and mitochondria?
The generally accepted concept is endosymbiotic theory, which suggests that mitochondria and chloroplasts were once free-living prokaryotic organisms that were engulfed by ancestral eukaryotic cells. Over time, these prokaryotic organisms formed a symbiotic relationship with the host cell, leading to their integration as organelles within eukaryotic cells. This process allowed for the specialization and evolution of these organelles to carry out specific functions within the cell.
Could mitochondria be found within photosynthetic protist?
Yes, mitochondria can be found within photosynthetic protists. These eukaryotic organisms, such as algae, possess both chloroplasts for photosynthesis and mitochondria for cellular respiration. The presence of mitochondria allows them to efficiently produce energy by utilizing both light and organic compounds. This dual capability is a key feature of many photosynthetic protists.
What is the manufacturers of the cell?
Mitochondria in animal Cells, and within both mitochondria and chloroplasts in plant Cells.
How are mitochondria and chloroplasts thought to have been incorporated into eukaryotic cells through the process of endosymbiosis?
Mitochondria and chloroplasts are thought to have been incorporated into eukaryotic cells through endosymbiosis, a process where a larger cell engulfed smaller prokaryotic cells. Over time, these smaller cells evolved a mutually beneficial relationship with the larger cell, eventually becoming specialized organelles within the eukaryotic cell. This theory is supported by evidence such as the similarities between these organelles and modern-day bacteria, as well as their own DNA and ability to replicate independently within the cell.
