Concept in Definition ABC
Miscellanea / / July 04, 2021
By Florencia Ucha, in Dec. 2013
The term of prokaryotic designates those cells that do not have a nucleus mobile defined, that is, their genetic material will be dispersed in the cytoplasm and gathered in an area called nucleoid.
Meanwhile, the nucleoid, region of appearance irregular, is where it is contained and compacted DNA, which in this special case of prokaryotes consists of a single molecule, circular in shape and with double filament. It should be noted that within the nucleoid there may be several copies of the DNA molecule.
Meanwhile, the system that prokaryotes have to store their genetic information is opposed to that of cells eukaryotes, since in these the DNA is stored in an organelle that has its own membrane and is known as the nucleus.
Then, on the contrary, those cells that do have a differentiated nucleus of the cytoplasm are known as eukaryotes, it is In other words, in this case the DNA is in a special compartment and separated from the rest of the cell in question, which we have already seen is known as core.
On the other hand, the concept of prokaryote is also used to designate those organisms characterized by being composed of prokaryotic or prokaryotic cells, as they can also be called. These organisms are made up of prokaryotic cells whose DNA is dispersed in the cytoplasm because, as we have seen, they do not have a cell nucleus.
Depending on the way in which they were classified or who carried out the aforementioned classification we can find the following denominations: moneras, bacteria, schizophytes, among others.
Without exceptions, all organisms made up of prokaryotic cells are unicellular which means that they are made up of a single cell.
According to some studies it is considered that all the organisms that exist today come from a prokaryotic form called last universal common ancestor (LUCA), which translated into Spanish would be: last universal common ancestor, which is believed to be the last organism from which we all descended later. Anyway, after a long process of evolutionAbout one and a half billion years ago, prokaryotic organisms resulted in more complex beings, eukaryotes, as a consequence of symbiotic association.
Topics in Prokaryote