What do you think about endosymbiotic theory?

It is thought that life arose on earth around four billion years ago. The endosymbiotic theory states that some of the organelles in today’s eukaryotic cells were once prokaryotic microbes. They eventually lost their cell wall and much of their DNA because they were not of benefit within the host cell.

Is the endosymbiotic theory accepted?

The theory postulates that the mitochondria evolved from aerobic bacteria (probably proteobacteria, related to the rickettsias), and that the chloroplast evolved from endosymbiotic cyanobacteria (autotrophic prokaryotes). The evidence for this theory is compelling as a whole, and it is now generally accepted.

How does the endosymbiotic theory support evolution?

Explanation: Darwinian evolution proposes that all living organisms are formed by descent with modification from a common ancestor or cell. Endosymbiosis explains the origins of Eukaryotic cells by the theory that one prokaryotic cell absorbed another prokaryotic cell creating a cell with multiple membranes.

What is the importance of the endosymbiotic theory quizlet?

TestNew stuff! Evolutionary theory which explains the origin of eukaryotes from ancestral prokaryotes. Proposes that some organelles (Mitochondria and Chloroplasts), evolved from free-living prokaryotes that were engulfed and subsequently became obligate endosymbionants.

When did the endosymbiotic theory happen?

Ivan Wallin advocated the idea of an endosymbiotic origin of mitochondria in the 1920s. The Russian botanist Boris Kozo-Polyansky became the first to explain the theory in terms of Darwinian evolution. In his 1924 book A New Principle of Biology.

What is the serial endosymbiotic theory all about how did it contribute to the evolution of eukaryotes?

The endosymbiotic theory explains how eukaryotic cells evolved. The large and small cells formed a symbiotic relationship in which both cells benefited. Some of the small cells were able to break down the large cell’s wastes for energy. They supplied energy not only to themselves but also to the large cell.

Which of the following could not be used as evidence to support the endosymbiotic theory?

“The exterior structure similar to bacterial cell walls” IS NOT an evidence in favour of the endosymbiotic theory. Both mitochondria and chloroplasts are double membrane bound.

What is the first evidence that supports the endosymbiotic theory?

Single stranded, circular DNA is found exclusively in prokaryotes. This evidence supports the endosymbiosis theory because these characteristics would allow the mitochondria and chloroplasts to survive on their own.