Why did anaerobic heterotrophic prokaryotes had to develop before aerobic eukaryotes?

Prokaryotic, anaerobic(Doesnt require oxygen) and heterotrophic, and they reproduced asexually. The prokaryotic and heterotrophic cells evolved first, so they needed an anaerobic cell. In time, photosynthetic prokaryotic cells developed creating free oxygen, leading to aerobic, prokaryotic cells.

How did prokaryotes become eukaryotes?

According to the endosymbiotic theory, the first eukaryotic cells evolved from a symbiotic relationship between two or more prokaryotic cells. Smaller prokaryotic cells were engulfed by (or invaded) larger prokaryotic cells. They evolved into the mitochondria of eukaryotic cells.

When did heterotrophic prokaryotes evolve?

about 3.5 billion years ago
Microbial mats or large biofilms may represent the earliest forms of prokaryotic life on Earth; there is fossil evidence of their presence starting about 3.5 billion years ago.

Why did mitochondria come before chloroplasts?

The mitochondria and plastids originated from endosymbiotic events when ancestral cells engulfed an aerobic bacterium (in the case of mitochondria) and a photosynthetic bacterium (in the case of chloroplasts). The evolution of mitochondria likely preceded the evolution of chloroplasts.

When did first eukaryotes appear?

2.7 billion years ago
The eukaryotes developed at least 2.7 billion years ago, following some 1 to 1.5 billion years of prokaryotic evolution.

When did prokaryotes and eukaryotes first appear?

1.5 to 2 billion years ago
Fossil records indicate that eukaryotes evolved from prokaryotes somewhere between 1.5 to 2 billion years ago. Two proposed pathways describe the invasion of prokaryote cells by two smaller prokaryote cells.

Why did mitochondria evolved before chloroplasts?

Mitochondria and chloroplasts likely evolved from engulfed prokaryotes that once lived as independent organisms. Eukaryotic cells containing mitochondria then engulfed photosynthetic prokaryotes, which evolved to become specialized chloroplast organelles.

Why do scientists believe mitochondria evolved before chloroplasts?

The chloroplast was originally a prokaryotic cell that could undergo photosynthesis. Mitochondria evolved before chloroplasts. We know this because mitochondria form a monophyletic group: e.g. all life with mitochondria traces back to a single common ancestor.

Which statement suggests that both mitochondria and chloroplasts are derived from ancestral prokaryotes that came to live inside larger host prokaryotes?

Which statement suggests that both mitochondria and chloroplasts are derived from ancestral prokaryotes that came to live inside larger host prokaryotes? They contain ribosomes, similar to the ones found in bacteria. Which statement about invagination is correct?

Which organelle was obtained first mitochondria or chloroplasts?

Mitochondria evolved before chloroplasts. We know this because Mitochondria form a monophyletic group: e.g. all life with mitochondria traces back to a single common ancestor (source).

What are some examples of heterotrophic prokaryotes?

Heterotrophic prokaryotes include some pathogens, bacteria that cause diseases, such as pneumonia, food poisoning, and tuberculosis. Two typical prokaryotic cells: a blue-green alga and a bacteria. Illustration by Hans & Cassidy. Courtesy of Gale Group.

How do prokaryotic organisms carry out photosynthesis?

Prokaryotic photosynthetic organisms have infoldings of the plasma membrane for chlorophyll attachment and photosynthesis ( Figure 1 ). It is here that organisms like cyanobacteria can carry out photosynthesis.

Were the early prokaryotes chemoautotrophs?

Many scientists think that the early prokaryotes were chemoautotrophs, obtaining energy from inorganic chemicals, possibly using the then-abundant hydrogen sulfide (H 2 S). Evidence to support this hypothesis can be observed in some hot springs, which contain members of the Archaea.

How did the two prokaryote domains split from each other?

The two prokaryote domains, Bacteria and Archaea, split from each other early in the evolution of life. Bacteria are very diverse, ranging from disease-causing pathogens to beneficial photosynthesizers and symbionts.