Biology, 31.01.2021 01:10 kuuleilani

The endosymbiotic theory states that eukaryotes evolved from prokaryotes. Which statement is part of the endosymbiotic

Answers: 3

Show answers

Answers

Answer from: kamerin46

Note about the question:

Statements are missing, and I failed to find the complete question. So here I give you some details about the theory that will help you to indetify the correct statement.

Answer and Explanation:

The endosymbiotic theory essentially states that some organelles of the eukaryotic cells, such as mitochondria and chloroplasts, were once free-living bacteria. Probably, these organisms must have been phagocytosed but not digested by another cell. On the contrary, these bacteria were able to adapt to their host in such a way that the two cells established a dependent relationship with each other.

It is speculated that chloroplasts derivate from cyanobacteria and that mitochondria derivate from rickettsias.

Cells would be beneficiated from this new bond, at the point that they could not survive by themselves anymore.

This theory is supported by a few characteristics of the chloroplasts and mitochondria that suggest that they once were a free cell. For example,

Both organelles present their genetic material. This DNI is independent of the cell´s DNA, is bi-catenary and circular, identical to the bacterial DNA, and very different from the one of the eukaryotic cells. These organelles do not divide by mitosis. Instead, they do it by binary fission and are capable of synthesizing their ribosomes and organelles. Both organelles present a double membrane, a characteristic that reinforces the idea of being phagocyted. The internal membrane looks identical to the bacteria membrane, while the external membrane looks like the eukaryotic one. In fact, in this internal membrane are placed the energy centers, exactly as it occurs in bacterias membrane. Finally, the sizes of the organelles are similar to the size of some procaryotes.

Answer from: Quest

explanation:

Answer from: Quest

answer: all : )

explanation:

Another question on Biology

Biology, 22.06.2019 05:20

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind

Answers: 2

Answer

Biology, 22.06.2019 08:00

Which nucleotide component contains nitrogen

Answers: 1

Answer

Biology, 22.06.2019 16:00

Which topic is most likely to be studied by bo which topic is most likely to be studied by botanist? insect metamorphosis, viral infection, plant growth, animal physiology

Answers: 2

Answer

Biology, 22.06.2019 17:30

High blood pressure occurs when there is too much blood flowing through the blood vessels at one time. by changing the amount of water in the blood, blood pressure can change. the excretory system can to lower blood pressure.which would most likely occur in the kidney? a)more water would be transferred from the nephron.b)less water would be absorbed into the nephron.c)the amount of water in the bladder would decrease.d)the amount of water in the blood would increase.

Answers: 2

Answer

You know the right answer?

The endosymbiotic theory states that eukaryotes evolved from prokaryotes. Which statement is part of...

Questions