What evidence do scientists have to support endosymbiosis and the evolution of prokaryotes to eukaryotes?

The hypothesis that eukaryotic cells evolved from a symbiotic association of prokaryotes—endosymbiosis—is particularly well supported by studies of mitochondria and chloroplasts, which are thought to have evolved from bacteria living in large cells.

1. What evidence supports the endosymbiotic theory of eukaryotic evolution?
2. What is the evidence supporting the endosymbiotic theory?
3. What is the evidence that prokaryotes evolved before eukaryotes?
4. What existing evidence supports the theory that mitochondria are of prokaryotic origin?
5. Which of the following is evidence that eukaryotes and prokaryotes share a common ancestor?
6. What are three observations that support the endosymbiotic theory?
7. Which of the following is the strongest evidence for endosymbiotic theory?
8. Which of the following is the strongest evidence supporting the Endosymbiotic hypothesis?
9. Why do scientists believe that prokaryotic cells probably appeared before eukaryotic cells?
10. Do you believe that eukaryotes evolve from prokaryotes?
11. Which of the following were the first to evolve after prokaryotes?
12. What evidence does not support the evolution of chloroplasts and mitochondria from prokaryotic cells?
13. How did mitochondria originate according to the endosymbiotic theory?
14. What's are the two organelles that are thought to be endosymbionts and what's the evidence for that?
15. What evidence indicates that all eukaryotes share common ancestry?
16. Which of the following are characteristic of both prokaryotic and eukaryotic cells?
17. What evidence from the phylogeny illustrates that all eukaryotes have mitochondria?

What evidence supports the endosymbiotic theory of eukaryotic evolution?

Numerous lines of evidence exist, including that mitochondria and chloroplasts have their own circular DNA (prokaryotes also have circular DNA), mitochondria and chloroplasts have a double membrane (the inner membrane would have initially been the ingested prokaryote's single membrane, and the outer membrane initially ...

What is the evidence supporting the endosymbiotic theory?

There is broad evidence to show that mitochondria and plastids arose from bacteria and one of the strongest arguments to support the endosymbiotic theory is that both mitochondria and plastids contain DNA that is different from that of the cell nucleus and that they have their own protein biosynthesis machinery.

What is the evidence that prokaryotes evolved before eukaryotes?

"Pro" means "before," and prokaryotes have DNA in a freely floating ring that is not encased in a nucleus. "Eu" means "true," and eukaryotes have DNA arranged in chromosomes and encased in a nucleus. Fossil evidence indicates that prokaryotic cells first existed on the earth, prior to the arrival of the eukaryotes.

What existing evidence supports the theory that mitochondria are of prokaryotic origin?

In addition to the lack of histones, mitochondria and chloroplasts have circular, single stranded DNA. 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.

Which of the following is evidence that eukaryotes and prokaryotes share a common ancestor?

All eukaryotes and prokaryotes contain linear DNA All eukaryotes and prokaryotes contain ribosomes. All eukaryotes and prokaryotes use organic molecules as an energy source; All eukaryotes and prokaryotes are capable of mitosis.

What are three observations that support the endosymbiotic theory?

Describe THREE observations that support the endosymbiotic theory. Mitochondria contain their own DNA. Chloroplasts contain their own DNA. Mitochondria can self-replicate.

Which of the following is the strongest evidence for endosymbiotic theory?

Protein import is the strongest evidence we have for the single origin of chloroplasts and mitochondria. It is probably also the strongest evidence we have to sort out the number and nature of secondary endosymbiotic events that have occurred in evolution involving the red plastid lineage.

Which of the following is the strongest evidence supporting the Endosymbiotic hypothesis?

All eukaryotes and prokaryotes contain ribosomes. Which of the following is the strongest evidence supporting the endosymbiont hypothesis? Mitochondria have their own and divide independently of the cell.

Why do scientists believe that prokaryotic cells probably appeared before eukaryotic cells?

discuss why prokaryotic cells probably appeared before eukaryotic cells. ... Prokaryotic cells are much smaller and lack organelles and a nucleus. Some prokaryotic cells can live in environments similar to early earth's atmosphere.

Do you believe that eukaryotes evolve from prokaryotes?

The hypothesis that eukaryotic cells evolved from a symbiotic association of prokaryotes—endosymbiosis—is particularly well supported by studies of mitochondria and chloroplasts, which are thought to have evolved from bacteria living in large cells.

Which of the following were the first to evolve after prokaryotes?

On a geological time line, protists are among the first organisms that evolved after prokaryotes. Today's eukaryotes evolved from a common ancestor with the following features: a nucleus that divided via mitosis, DNA associated with histones, a cytoskeleton and endomembrane system, the ability to make cilia/flagella.

What evidence does not support the evolution of chloroplasts and mitochondria from prokaryotic cells?

Mandira P. Martin M. "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.

How did mitochondria originate according to the endosymbiotic theory?

The endosymbiotic hypothesis for the origin of mitochondria (and chloroplasts) suggests that mitochondria are descended from specialized bacteria (probably purple nonsulfur bacteria) that somehow survived endocytosis by another species of prokaryote or some other cell type, and became incorporated into the cytoplasm.

What's are the two organelles that are thought to be endosymbionts and what's the evidence for that?

This form of symbiosis involves a larger cell that serves as a host and a smaller cell that is referred to as an endosymbiont. ... And based upon this theory, the organelles mitochondria and chloroplasts are supposedly the early prokaryotic endosymbionts that had been taken in.

What evidence indicates that all eukaryotes share common ancestry?

The oldest fossil evidence of eukaryotes is about 2 billion years old. Fossils older than this all appear to be prokaryotes. It is probable that today's eukaryotes are descended from an ancestor that had a prokaryotic organization.

Which of the following are characteristic of both prokaryotic and eukaryotic cells?

Both prokaryotic and eukaryotic cells have structures in common. All cells have a plasma membrane, ribosomes, cytoplasm, and DNA. The plasma membrane, or cell membrane, is the phospholipid layer that surrounds the cell and protects it from the outside environment.

What evidence from the phylogeny illustrates that all eukaryotes have mitochondria?

Like eukaryotes themselves, mitochondria appear to have arisen only once in all of evolution. The best evidence for the single origin of mitochondria comes from a conserved set of clearly homologous and commonly inherited genes preserved in the mitochondrial DNA across all known eukaryotic groups.