0
Organelles are structures within a cell eg nucleus, ribosomes, mitochondria and chloroplasts.
Some organelles are believed to have originated by endosymbiosis. Endo means "within" and symbiosis means "living together".
The idea is that eukaryotic cells (cells which make up animals, plants, fungi and protists) formed by symbiosis between prokaryotic (bacterial) cells. Some prokaryotic cells lived by engulfing and digesting other prokaryotic cells. If the engulfed cell survived inside the engulfing cell instead of being digested, a new type of cell (the eukaryotic cell) would be formed.
If the engulfed cell was a photosynthetic cell it could eventually evolve into a chloroplast.
If the engulfed cell was a cell which carried out aerobic respiration, it could evolve into a mitochondrion.
Chloroplasts and mitochondria are the organelles which most biologists believe originated by this process of endosymbiosis.
Evidence for this process is provided by similarities between these organelles and bacteria.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoProteins
Add your answer:
Earn +20 pts
What theory was developed around the idea that some eukaryotic organelles evolved from proyarotic organisms?
The Endosymbiotic theory of Lynn Margulis.
Which cell organelles provide strong evidence for endosymbiotic origination?
The mitochondria. This organelle has it own circular DNA and make some of its own proteins. Strongly suggesting bacterial origins.
Eukaryotic cells acquired mitochondria and chloroplasts by?
By a process called endosymbiosis. The engulfing, for whatever purpose, of the microorganisms that were these now organelles. Google endosymbiotic theory. Lynn Margulis.
What organelles that have a double membrane?
Nucleus Mitochondria
What is a membrane bound organelle plant cells?
Mitochondria and Chloroplasts, this is to do with the endosymbiotic theory.
What is the evolutionary hypothesis that some organelles are remnants of prokaryotic cells?
endosymbiotic theory
Endosymbiotic theory explains the formation of organelles surrounded by how many membranes?
two membranes, for example the mitochondrion and the chloroplast.
What theory was developed around the idea that some eukaryotic organelles evolved from proyarotic organisms?
The Endosymbiotic theory of Lynn Margulis.
What are the 3 main steps of the endosymbiotic theory?
The endosymbiotic theory was first articulated by Russian botanist Konstantin Mereschkowski in 1910. It states that several key organelles of eukaryotes began as symbioses between two or more single-celled organisms.
Is a mitochondria a bacterial Cell?
Yes, according to the The endosymbiotic theory:The endosymbiotic theory concerns the mitochondria, plastids (e.g. chloroplasts), and possibly other organelles of eukaryotic Cells. According to this theory, certain organelles originated as free-living bacteria that were taken inside another Cell as endosymbionts. Mitochondria developed from proteobacteria (in particular, Rickettsiales or close relatives) and chloroplasts from cyanobacteria.
Describe the proposed relationship between prokaryotes and the organelles in eukaryotes?
The endosymbiotic theory deals with the relationship between organelles in eukaryotes and prokaryotes. According to this theory organelles in eukaryotes originated separately from prokaryotes.
Which cell organelles provide strong evidence for endosymbiotic origination?
The mitochondria. This organelle has it own circular DNA and make some of its own proteins. Strongly suggesting bacterial origins.
What is endosymbiotic theary?
This theory tries to explain the double membranes belonging to mitochondria and chloroplasts. It suggests that both organelles once used to be single organisms, as in they were not mere parts of a cell.
What is the purpose or usefulness of organelles that have a double membrane?
Mitochondria (producing cell energy), and chloroplast (photosyntesis) are the organelles with double membrane. Endosymbiotic theory - during evolution smaller prokaryots were consumed by bigger cells, and developed protective coat, hence the double membrane
Eukaryotic cells acquired mitochondria and chloroplasts by?
By a process called endosymbiosis. The engulfing, for whatever purpose, of the microorganisms that were these now organelles. Google endosymbiotic theory. Lynn Margulis.
What organelles that have a double membrane?
Nucleus Mitochondria
What is a membrane bound organelle plant cells?
Mitochondria and Chloroplasts, this is to do with the endosymbiotic theory.
