Theory of endosymbiosis: Symbiogenesis, or endosymbiotic theory, is an evolutionary theory of the origin of eukaryotic cells from prokaryotic organisms .The endosymbiotic theory describes how a large host cell and ingested bacteria could easily become dependent on one another for survival, resulting in a permanent relationship. Over millions of years ofevolution, mitochondria and chloroplasts have become more specialized and today they cannot live outside the cell.
Theory of endosymbiosis concerns the origin of mitochondria and chloroplasts, two organelles contained within various eukaryotic cells. these organelles originated as separate prokaryotic organisms that were taken inside a primordial eukaryotic cell. Such symbiotic relationships in which two species are dependent upon one another to varying extents served as crucial elements of the evolutionary progression of eukaryotic cells .
Endosymbiosstudent demonstate the theory of is using the models:
Bacteria are prokaryotes. Bacterium contain no membrane bound nucleus and rarely contain membrane bound organelles. Simply, most don't have any large organelles with their own membranes; this means no nucleus, no mitochondriaand no chloroplast.Small must b more simple or lack mitochondria .while large have mitochondria .Focousing on the presence or absence of mitochondria and chloroplast student demonstrate the theory of endosymbiosis>
The endosymbiosis hypothesis is a hypothesis that suggests that the smaller prokaryotic of bacteria cells are engulfed by a larger prokaryotic cell or bacteria over a long time period. This incorporation of smaller bacteria cells inside large bacteria cells has beneficial aspects for both small and large cells.
The evolution of the eukaryotic cell by the endosymbiosis process that is evolved by engulfing different smaller prokaryotic cells by larger prokaryotic cells that result in evolved as chloroplasts and mitochondria and other organelles. The theory of endosymbiosis can be demonstrated by placing a smaller bacteria model in a larger bacteria model as a whole eukaryotic cell where the large model is cell and smaller bacteria model is any cell organelle like mitochondria.
he can use an magnifying glass
The theory of endosymbiosis states that the eukaryotic cells evolved from the prokaryotic cells. According to this theory, a large bacterium ingested a small bacterium and then they evolved together working as a single unit. This can be shown through a model by demonstrating a big bacteria ingesting the small one. The small bacteria came to be cell organelles, such as mitochondria and chloroplasts in the eukaryotic cells with their own DNA.
Hence, the correct answer is 'Option A - show the big bacteria ingesting the small one'.
We have studied endosymbiotic hypothesis which describes the evolution of eukaryotic cells from prokaryotic cell.
According to this hypothesis, there were some small aerobic bacteria and large anaerobic bacteria. The large bacteria ingested small bacteria which stayed inside them instead of getting digested. Thus large and small both bacteria co-existed with each other in a symbiotic relationship in which small bacteria got shelter while large bacteria also got benefit. For example if they were aerobic bacteria, large bacteria got food and energy.
So with the passage of time these small bacteria got converted into organelles like Mitochondria and Chloroplast.
A student can demonstrate this theory by showing the large bacteria and the process of ingesting small one and how with the passage of time it got changed into organelle that performed special function.
Hope it help!
Correct: show the big bacteria ingesting the small one