Cells and Control
10 months ago
Eukraryotic cells have a membrane bound nucleus and organelles whilst prokaryotic cells have free floating DNA with no nucleus
Eukaryotic have nuclues and membrane bound organelles. While prokaryotic do not have any of these.
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Prokaryotic cells have no membrane-bound organelles including a nucleus. The DNA of many prokaryotes can be found in a chromosomal loop of DNA or in plasmids.
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Prokaryotic cells are single celled organisms such as bacteria and viruses. They do not have a nucleus but they contain DNA. Eukaryotic cells are present in multi-cellular organisms such as plants and animals and do contain a nucleus.
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Prokaryotic cells are bascially bacteria. They are characterised by, among other things, the lack of a nucleus containing genetic material - instead the genetic material is distributed freely in the cell. Eukaryotic cells have the genetic material confined to a nucleus which is clearly visible under the microscope...
Prokaryotic cells are found in prokaryotes that are always unicellular, eukaryotic cells are usually in multi-celled organisms. Eukaryotic cells are larger than prokaryotic cells. The DNA in eukaryotes is stored within the nucleus, while DNA of prokariotic cells is stored in the cytoplasm.
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A Prokaryotic cell does not have a true, membrane-bound nucleus, unlike a Eukaryotic cell.
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Prokaryotic - these are simple cells with no distinct nucleus. The ‘pro’ means ‘before’ and ‘karyo’ refers to the nucleus. The best example of these may well be the simple bacterium.
Eukaryotic cells typically have ‘membrane bound organelles’ such as the nucleus, mitochondria and chloroplasts. The ‘Eu’ prefix comes from the Greek for ‘new’. On an evolutionary scale, eukaryotes are likely to be much ‘younger’ than prokaryotes. In fact, one of the domains used in classification is the Archaea - these are the ’older’ bacteria.
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Eukaryotic cells have membrane bound organelles whilst prokaryotic cells don't. For example, as the nucleus is a membrane bound organelle, prokaryotic cells don't have nuclei. Instead, they have their genetic material in a single chromosome of circular DNA (without any introns). Eukaryotic cells, on the other hand, have linear, protein-bound DNA containing introns. Prokaryotic cells also tend to be smaller, and contain 70S ribosomes, whilst eukaryotic cells contain 80S ribosomes. Prokaryotic cell walls are typically made up of peptidoglycan (murein), whilst eukaryotic cell walls, if present, are made of cellulose, or chitin in fungi.
You can actually link some of the differences between prokaryotic and eukaryotic cells to the endosymbiotic theory - that some eukaryotic organelles, e.g. mitochondria or chloroplasts, evolved from free-living prokaryotes.
eukaryotes have membrane bound organelles such as a nucleus whereas prokaryotes don’t.
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Examples of Organisms:
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Prokaryotic cells lack membrane bound organelles and are very small in comparison to eukaryotic cells. Prokaryotic genetic material is also not inside a nucleus unlike eukaryotic cells and is usually circular.
Prokaryotic ribosomes are also smaller.
Prokaryotic cells are always said to be unicellular, whereas a eukaryotic cell is said be multi-cellular.
Eukaryotic cells are said to be more complex and more than 100 to 10000 times larger than the prokaryotic cells.
Hey Elizabeth, The prokaryotic cells are mainly bacterial cells and the eukaryotic cells are the human cells. Now the main difference between them can is that the prokaryotic cells have a cell wall whereas the eukaryotic cells do not. Another difference can be that the genetic material in the prokaryotic cells is not membrane-bound whereas in the eukaryotic cells they can be membrane-bound( nucleus). The eukaryotes have 80s ribosomes whereas the prokaryotes contain 70s ribosomes. The prokaryotes contain plasmids whereas the eukaryotes do not. There are also other differences but I hope this helps :)
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