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Mitochondria and chloroplasts likely evolved from engulfed prokaryotes that once lived as independent organisms. At some point, a eukaryotic cell engulfed an aerobic prokaryote, which then formed an endosymbiotic relationship with the host eukaryote, gradually developing into a mitochondrion. Eukaryotic cells containing mitochondria then engulfed photosynthetic prokaryotes, which evolved to become specialized chloroplast organelles.
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What was the ultimate origin of all plastids?
The ultimate origin of all plastids is believed to be cyanobacteria through a process called primary endosymbiosis. This involved a eukaryotic cell engulfing a cyanobacterium, which eventually evolved into plastids such as chloroplasts in plants.
Do nitrogen fixing bacteria have chloroplasts?
No bacteria have chloroplasts. Plants have chloroplasts. Chloroplasts were originally cyanobacteria -- they are the results of an endosymbiosis between a cyanobacterium and a eukaryote.
Where is the thylakiod located in a cell?
The chloroplasts
Are chloroplasts related to chlorophyll?
Yes they are related. Chlorophylls are in chloroplasts
Who discovered chloroplast and in which year?
The discovery of chloroplasts should not be confused with the discovery of the operation of chlorophyll. The discovery of chloroplasts as organelles inside plant cells is usually credited to Julius von Sachs (1832-1897), an influential botanist and author of standard botanical textbooks - sometimes called "The Father of Plant Physiology"His discovery was due in part to the development of more powerful microscopes, which enabled him to see, for the first time into the structure of living plant cells."In 1864, Sachs observed grains of starch were being formed in leaves exposed to light. He showed that chlorophyll is not distributed randomly throughout the plant but is located in special bodies (later called chloroplasts) within plant cells. He found that the site where glucose is made is in these bodies and glucose is usually stored as starch."The evolutionary origins of chloroplasts was a puzzle whose solution was first suggested by Russian botanist Konstantin Mereschcowsky in 1906. Mereschcowsky "coined the term "symbiogenesis" when he observed the symbiotic relationship between fungi and algae (Mereschkowski 1905). The term "endosymbiosis" has a Greek origin (endo, meaning "within"; syn, meaning "with"; and biosis, meaning "living"), and it refers to the phenomenon of an organism living within another organism."This phenomenon was first established as the origin of mitochondria and became the accepted answer for the origin of chloroplasts only following the work of Lynn Margulis in the 1960s.*Look up chloroplasts in the BBC Learning Zone on Sachs and in Nature.com - where the material on Mereschcowsky as the man who first explained the origin of the chloroplast (not its existence, as is stated elsewhere and previously in this answer) is described.
Which of the following would not support the endosymbiotic theory of the origin of mitochondri and chloroplasts?
Both contain DNA
What is the endosymbiotic theory?
The Endosymbiotic Theory is a theory about how mitochondria and chloroplasts formed. The theory suggests that both the mitochondria and chloroplasts were once prokaryotic cells that were ingested but not digested by eukaryotic cells. This would explain why both have their own DNA.
What was the ultimate origin of all plastids?
The ultimate origin of all plastids is believed to be cyanobacteria through a process called primary endosymbiosis. This involved a eukaryotic cell engulfing a cyanobacterium, which eventually evolved into plastids such as chloroplasts in plants.
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.
Do nitrogen fixing bacteria have chloroplasts?
No bacteria have chloroplasts. Plants have chloroplasts. Chloroplasts were originally cyanobacteria -- they are the results of an endosymbiosis between a cyanobacterium and a eukaryote.
Where is the thylakiod located in a cell?
The chloroplasts
Are chloroplasts related to chlorophyll?
Yes they are related. Chlorophylls are in chloroplasts
The stongest evidence for the endosymbiotic origin of eukaryotic orgelles is the homology between extant prokaryotes and?
...eukaryotic organelles, such as mitochondria and chloroplasts. These organelles have their own DNA, ribosomes, and are similar in size to prokaryotes like bacteria. Additionally, the double membrane structures of mitochondria and chloroplasts resemble what is seen in prokaryotic cells.
Who discovered chloroplast and in which year?
The discovery of chloroplasts should not be confused with the discovery of the operation of chlorophyll. The discovery of chloroplasts as organelles inside plant cells is usually credited to Julius von Sachs (1832-1897), an influential botanist and author of standard botanical textbooks - sometimes called "The Father of Plant Physiology"His discovery was due in part to the development of more powerful microscopes, which enabled him to see, for the first time into the structure of living plant cells."In 1864, Sachs observed grains of starch were being formed in leaves exposed to light. He showed that chlorophyll is not distributed randomly throughout the plant but is located in special bodies (later called chloroplasts) within plant cells. He found that the site where glucose is made is in these bodies and glucose is usually stored as starch."The evolutionary origins of chloroplasts was a puzzle whose solution was first suggested by Russian botanist Konstantin Mereschcowsky in 1906. Mereschcowsky "coined the term "symbiogenesis" when he observed the symbiotic relationship between fungi and algae (Mereschkowski 1905). The term "endosymbiosis" has a Greek origin (endo, meaning "within"; syn, meaning "with"; and biosis, meaning "living"), and it refers to the phenomenon of an organism living within another organism."This phenomenon was first established as the origin of mitochondria and became the accepted answer for the origin of chloroplasts only following the work of Lynn Margulis in the 1960s.*Look up chloroplasts in the BBC Learning Zone on Sachs and in Nature.com - where the material on Mereschcowsky as the man who first explained the origin of the chloroplast (not its existence, as is stated elsewhere and previously in this answer) is described.
What are three types of organisms that possess chloroplasts?
Plants and algae have chloroplasts in kingdom eukariya.Prokariyotes lacks chloroplasts in them.
What is the plural of chloroplast?
The plural of chloroplast is chloroplasts. As in "these are the chloroplasts".
Do peas have chloroplasts?
Yes, pea plants have chloroplasts.
