WebOct 19, 2015 · Prokaryotes Explanation: Prokaryotes did. Prokaryotes are undeveloped cells with no nuclei and the evolved first. The have circular DNA. Even mitochondrion and chlorophyll of the eukaryotes have circular DNA which suggests that prokaryotes evolved first. Answer link WebThe group of bacteria from which mitochondria seem to have evolved are the Alphaproteobacteria — many of them are intracellular parasites, which suggests how they originally ended up inside the first eukaryotic cell. Chloroplasts appear most closely related to the cyanobacteria. You can read more about this theory here:
Timeline of Photosynthesis on Earth - Scientific …
WebOct 20, 2024 · Scientists estimate that the first prokaryotic cells emerged about 3.8 billion years ago. Meanwhile, the oldest known eukaryote fossils occur in the area of 2.7 billion years ago. So where exactly did they come from? Well, prokaryotes regularly engulf and consume one another. WebAll cells fall into one of these two broad categories. Only the single-celled organisms of the domains Bacteria and Archaea are classified as prokaryotes— pro means before and kary means nucleus. Animals, … shantae background
Mitochondria and chloroplasts (article) Khan Academy
The oldest known fossilized prokaryotes were laid down approximately 3.5 billion years ago, only about 1 billion years after the formation of the Earth's crust. Eukaryotes only appear in the fossil record later, and may have formed from endosymbiosis of multiple prokaryote ancestors. See more A prokaryote is a single-celled organism that lacks a nucleus and other membrane-bound organelles. The word prokaryote comes from the Greek πρό (pro, 'before') and κάρυον (karyon, 'nut' or 'kernel'). In the two-empire system arising … See more Prokaryotes have a prokaryotic cytoskeleton that is more primitive than that of the eukaryotes. Besides homologues of actin and tubulin ( See more Prokaryotic cells have various shapes; the four basic shapes of bacteria are: • Cocci – A bacterium that is spherical or ovoid is called a coccus (Plural, cocci). e.g. Streptococcus, Staphylococcus. • Bacilli – A bacterium with cylindrical shape called rod or a … See more While prokaryotes are considered strictly unicellular, most can form stable aggregate communities. When such communities are encased in a stabilizing polymer matrix ("slime"), they may be called "biofilms". Cells in biofilms often show distinct … See more The distinction between prokaryotes and eukaryotes was firmly established by the microbiologists Roger Stanier and C. B. van Niel in their 1962 paper The concept of a bacterium (though … See more Bacteria and archaea reproduce through asexual reproduction, usually by binary fission. Genetic exchange and recombination still occur, but this is a form of horizontal gene transfer and is not a replicative process, simply involving the transference of … See more DNA transfer between prokaryotic cells occurs in bacteria and archaea, although it has been mainly studied in bacteria. In bacteria, gene … See more WebVerified answer. biology. Water molecules stick to other water molecules because. Verified answer. chemistry. A hexane solution contains as impurities 5.2 \% 5.2% (by … ponce inlet club south condos for sale