difference betweem eukaryotoc and prokaryotic?
463979
Eukaryotic means an organism has a nucleus...prokaryotic means it doesn't have a nucleus.
35114
A relatively simple unicellular organism without a nucleus. \n\nFor more information, go here:\nhttp://en.wikipedia.org/wiki/Prokaryote
853564
OK, I want to start by saying that Blackwinterbyrd's answer is entirely correct if applying your question to humans, I am being pedantic and taking unicellular organisms into consideration.\n\nIn prokaryotic organisms there is no evolutionary benefit to an apoptotic response as although many prokaryotes live in colonys they are essentialy single cell organisms.  As such many prokaryotes will attempt to cary on with an incomplete copy of their DNA. \nThe most likely outcome of this is that cell will die very quickly however if the DNA synthesis was very nearly complete then it is possiable that cell may survive.
804575
Most prokaryotes are bacteria, and the two terms are often treated as synonyms. Unicellular is another term for them.
756493
The domain would be Eukarya--Eukaryotic cells. Some folks would put protista in Kingdom Protista within the larger superkingdom or domain Eukarya. \n\nHowever, the word "protist" conveys the meaning of "eukaryote that isn't a plant, animal, or fungus." It includes "simpler" forms:   no complex development from embryos, no extensive cell differentiation, etc.\nBut, recent studies of protist DNA and ultrastructure show that they are not monophyletic.  The protists are quite diverse and  probably should be classified in several kingdom-level taxa. \nIn other words, the "Kingdom Protista" really represents more than one group.  It contains organisms which are more closely related to members of other kingdoms than they are to other protists.
291313
In bacteria, DNA is circular and lacks the structure of eukaryotic DNA.  Eukaryotic DNA is formed into chromosomes, which are complex protein/DNA structures which compact and organize the DNA to promote gene regulation and mitosis.  Both bacteria and eukaryotes have histones which wrap around the DNA.  Bacteria also have DNA binding proteins, but generally speaking is much less complex.  In eukaryotes such as humans, gene transcription and DNA replication is hidiously complex and involves hundreds of proteins, whereas in bacteria such as E Coli, the number of proteins involved is an order of magnitude less.
240014
It is a prokaryote because:\n\na. It contains a nucleiod instead of a nucleus\nb. It has a single chromosome (one DNA)\nc. It lacks a nuclear membrane\nd. Mitochondria is absent\ne. It divides by binary fission, not by mitosis.\n\nAlso, Staph. Aureus is a bacterium and all bacteria are prokaryotes.\n\nHope this helped.
809869
The ER is needed in eukarytoic cells because they generally metabolize through cellular respiration or photosynthesis which require larger molecules to be transported to specific organelles (chloroplast and mitochondria) but prokaryots often use anaerobic methods such as fermentation and other glycolysis based which can be done in the cytosol (cytoplasm) and do not require transportion to specific oraganelles (which defeats the need for the endoplasmic reticulum)
27826
Prokaryotic cells and eukaryotic cells have a lot in common. They perform most of the same kinds of functions, and in the same ways. Both are enclosed by plasma membranes, filled with cytoplasm, and loaded with small structures called ribosomes. Both have DNA which carries the archived instructions for operating the cell. And the similarities go far beyond the visible--physiologically they are very similar in many ways. For example, the DNA in the two cell types is precisely the same kind of DNA, and the genetic code for a prokaryotic cell is exactly the same genetic code used in eukaryotic cells.
185858
Mitochondria are found in nearly all EUKARYOTIC cells, usually several or many per cell.\n\nAnything not considered a eukaryote does not in turn have organelles therefore it doesn't have mitochondria.\n\nDan is correct viruses and prokaryotes don't have them.....
486941
The origin of the eukaryotic cell was a milestone in the evolution of life, since they include all complex cells and multi-cellular organisms. The timing of this series of events is hard to determine; Knoll (1992) suggests they developed approximately 1.6 - 2.1 billion years ago. Fossils that are clearly related to modern groups start appearing around 800 million years ago.\n\nrRNA trees constructed during the 1980s and 1990s left most eukaryotes in an unresolved "crown" group (not technically a true crown), which was usually divided by the form of the mitochondrial cristae. The few groups that lack mitochondria branched separately and so the absence was believed to be primitive, but this is now considered an artifact of long branch attraction and they are known to have lost them secondarily.\n\nTrees based on actin and other genes have painted a different and more complete picture. Most eukaryotes are now included in several supergroups:\n\nOpisthokonts Animals, fungi, choanoflagellates, etc. \nAmoebozoa Most lobose amoebae and slime moulds \nRhizaria Various amoeboid protozoa \nExcavates Various flagellate protozoa \nArchaeplastida Land plants, green and red algae \nHeterokonts Brown algae, diatoms, water molds, etc. \nAlveolates Ciliates, Apicomplexa, dinoflagellates, etc. \n\nThe heterokonts and alveolates may be part of a larger group that is ancestrally photosynthetic, called the chromalveolates, but this remains contentious. Otherwise the relationships between the different supergroups are mostly uncertain, and in particular there is dispute about where the root of the evolutionary tree belongs, and as a result what the earliest eukaryotes were like. A few small protist groups have not been related to any of the major supergroups, notably the centrohelids, apusozoans, and ebriids.\n\nEukaryotes are closely related to archaea, at least in terms of nuclear DNA and genetic machinery. In other respects, such as membrane composition, they are similar to eubacteria. Three main explanations for this have been proposed:\n\nEukaryotes resulted from the complete fusion of two or more cells, the cytoplasm forming from a eubacterium and the nucleus from an archaeon (alternatively a virus). \nEukaryotes developed from Archaea, and acquired their eubacterial characteristics from the proto-mitochondrion. \nEukaryotes and Archaea developed separately from a modified eubacterium. \nThe origin of the endomembrane system and mitochondria are also disputed. The phagotrophic hypothesis states the membranes originated with the development of endocytosis and later specialized; mitochondria were acquired by ingestion, like plastids. The syntrophic hypothesis states that the proto-eukaryote relied on the proto-mitochondrion for food, and so ultimately grew to surround it; the membranes originate later, in part thanks to mitochondrial genes (the hydrogen hypothesis is one particular version).
1173463
Bacteria are procaryotes. Their cell structure is different from those of plants and animals (Eucaryotes) they are in their own category altogether. Years and years ago they were categorized as plants. Some of them have clorophyll. How old is your brother's science book?
749401
Hey, this is a question I asked my professor, how funny, lol. \n\nFirst of all, it's important to note the differences between a prokaryotic and a eukaryotic cell.  \n\nCells that lack a membrane-bound nucleus are called prokaryotes (from the Greek meaning before nuclei). These cells have few internal structures that are distinguishable under a microscope. Cells in the monera kingdom such as bacteria and cyanobacteria (also known as blue-green algae) are prokaryotes. Prokaryotic cells differ significantly from eukaryotic cells. They don't have a membrane-bound nucleus and instead of having chromosomal DNA, their genetic information is in a circular loop called a plasmid. \n\nTake a look at this picture:  http://library.thinkquest.org/C004535/media/prokaryote.gif\n\nEukaryotic cells comprise all of the life kingdoms except monera. They can be easily distinguished through a membrane-bound nucleus.  Eukaryotic cells also contain many internal membrane-bound structures called organelles. These organelles such as the mitochondrion or chloroplast serve to perform metabolic functions and energy conversion. \n\nTake a look at this picture:  http://library.thinkquest.org/C004535/media/eukaryote_animal.gif\n\nFor a brief and quick response, ...a eukaryotic cell is a larger cell with distinctly more organelles within the cell.  They differ in size greatly :)
152301
Prokaryotic cells are cells associated with Bacteria.  Eukaryotic cells are found in Plants and Animals.
982683
1.Mitochondria have a set of double membranes, as do most bacteria; and the lipid composition of mitochondrial membranes shows no similarities with the eukaryotic cell cytoplasm. If mitochondria evolved inside of proto eukaryote, their membrane composition would be expected to be of the same material. Instead, it appears that mitochondrial membranes more closely resemble bacterial membranes in terms of lipid composition \n\n2.The inner-membrane infoldings in the mitochondria lend more credence to the symbiosis theory. the infoldings (cristae) "are adaptations that increase the surface area of oxidative enzymes, evolutionary analogues to the mesosomal membranes of many prokaryotes" . In addition, the cristae keep the various enzymes segregated according to use, as do bacteria\n\n3.Mitochondrial ribosomal RNA sequences bear much more in common with bacteria than with ribosomes in the eukaryotic cytoplasm. For example, n-formylmethionyl transfer RNA has been found to exist only in mitochondria and bacteria \n\n4. Not only do mitochondria possess their own DNA, but it is circular, as is bacterial DNA; and DNA synthesis is continuous as opposed to that of eukaryotic nuclear DNA. Furthermore, the ratio of guanine-cytosine base pairs in mitochondrial DNA is proportionately higher, as with bacteria, than in eukaryotic nuclear DNA\n\n5.Mitochondrial division resembles bacterial reproduction.  "Genetic recombination in (mitochondria) is far more reminiscent of phage and bacterial sexuality than it is of eukaryotic nuclear sexual behavior
543214
Eukaryotes have organelles and are comparmentalized.  Prokaryotes do not have organelles and are not compartmentalized.
92432
The prokaryote cell does not contain a nucleus. Prokaryote cells are only one celled organisms.\nEukaryote cells can be of one celled organisms, or multi-celled (like you and me). Eukaryote cells contain mitocondria, I don't beleave prokaryotes do.