Do prokaryotes contrain organelles, and if so, what are the funcions of these organelles?
138875
hes wrong (above. Prokaryotes do have organelles. THey do not have membrane bound organelles. Take for example the central vacuole of a plant. It has a membrane surrounding it, so it is not a prokaryote. Prokaryotes have ribosomes which synthesize proteins and nucleic acids to form a polypeptide chain. THey have a mitochondria for ATP etc..
701055
Unicellular organisms are placed in both Monera and Protista.  Also there are Archaeans that are single celled prokaryotes that are not placed in either Monera or Protista and are given their own domain called Domain Archaea.  \n\nFor the old classification system unicellular organisms are broadly placed into Monera if they lack a nucleus.  Unicellular organisms are lumped into protista if they have a nucleus and membrane bound organelles, such as mitochodria, and in some cases chloroplasts.  \n\nFor example a bacterium does not possess a nucleus.  Therefore all bacteria are placed into Monera.  \nProtista contains many different kinds of unicellular organisms such as amoeba and green algae.  All of the protists will have a nucleus and mitochondria at the very least.
758779
eukaryotes all have telomeres\n\nmost prokaryotes have circular DNA's --> therefore do not suffer from the same shortening DNA problems as in eukaryotic linear DNA's --> therefore no need for having telomeres.
769432
Eukaryotic...Prokaryotic are bacteria cells...Hope it helps!
751672
Eukaryotic cells (typical plant and animal cells) are considered to be more advanced than prokayotic cells. Their DNA is contained within a membrane bound nucleus and they contain membrane bound organelles such as mitochondria. They also contain a cytoskeleton which is a series of tubes and microfilaments which are involved with movement within the cell.\n\nProkaryotic cells (eg. bacteria) have no membrane bound nucleus - their DNA is restricted to a region called the nuceoid which is not membrane bound. They contain no membrane bound organelles and have no cytoskeleton. They do contain non membrane bound organelles such as ribosomes ( eukaryotes also contain these)\n\nHope this is of some help.
1045807
prokaryotic cell diagram:\nhttp://en.wikipedia.org/wiki/Image:Prokaryote_cell_diagram.svg\n\neukaryotic cell diagram:\nhttp://en.wikipedia.org/wiki/Image:Animal_cell_structure.svg
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.
150160
They are eukaryotic, multicellular, and in the kingdom Animalia. They come from mammals (you and me) and so that means they have an membrane enclosed nucleus, as opposed to prokaryotic cells that don't have a nucleus.  They are multicellular b/c all animals are.  And the kindom Animalia applies cheek cells as well. :)
60547
1.  They both have  DNA  as their genetic material.\n   2. They are both membrane bound.\n   3. They both have ribosomes .\n   4. They have similar basic metabolism .\n   5. They are both amazingly diverse in forms. \n\nThe major and extremely significant difference between prokaryotes and eukaryotes is that eukaryotes have a nucleus and membrane-bound organelles , while prokaryotes do not. The DNA of prokaryotes floats freely around the cell; the DNA of eukaryotes is held within its nucleus. The organelles of eukaryotes allow them to exhibit much higher levels of intracellular division of labor than is possible in prokaryotic cells. Additional obvious differences between prokaryotes and eukaryotes include:\n\nSize\n    Eukaryotic cells are, on average, ten times the size of prokaryotic cells. \nGenomic composition and length\n    The DNA of eukaryotes is much more complex and therefore much more extnsive than the DNA of prokaryotes. \nCell Wall\n    Prokaryotes have a cell wall composed of peptidoglycan, a single large polymer of amino acids and sugar . Many types of eukaryotic cells also have cell walls, but none made of peptidoglycan.
33397
Nature has determined this design to be the most efficient and useful for higher order organisms.  There are two types of cell "designs", prokaryotic (bacteria) and eukaryotic (plant and animal cells).  It is thought that at one point all living things were prokaryotic, then at some point in our evolution a nuclear envelope was developed and proved to be beneficial to the organism, thereby natural selection allowed for the continuation of a nuclear envelope.  As time went by plants and animals both evolved from some ancestor of this first eukaryotic cell and henceforth have similar cell designs.  As for the actual benefits of this design, the nuclear envelope of plant and animal cells serve to protect the DNA, and therefore genes, of the animal from damage, and also serves as a type of filter seperating cellular processess in the cytosol from gene regulation in the nucleus.
34900
The protist needs to maintain homeostasis, the balance in the body, in order to live. Diffusion and Osmosis acheive this by allowing nutrientrs to come in and wastes to leave.
325362
They are also called Monera. They lack nuclei and the various organelles of eukaryotes. Prokaryotes possess a single "naked" chromosome consisting of a single DNA molecule without the proteins found in eukaryotes. SOme prokaryotes have plasmids, small circular DNA moleucles, in addition to the major chromosomes.\nBacteria are also prokaryotes
264821
These differences are down to cellular level:\n\nEUKARYOTES:\n--Relatively bigger compared to prokaryotes \n--Have true nucleus (surrounded by nuclear envelope)\n--Cells contain golgi, lysosomes, ribosomes and endoplasmic reticulum\n--Have cell wall made of cellulose and chitin\n--Have linear DNA with protein forming true chromosomes\n--Have a nucleolus\n--Their flagella consist of microtubules\n--Membrane-bounded organelles like chloroplast present\n\nPROKARYOTES:\n--Relatively smaller in size\n--Don't have a permanent nucleus\n--Their cells contain ribosomes, but no vacuole or golgi\n--Cell wall is rigid and made up of murein\n--Have circular DNA, with no true chromosomes\n--No nucleolus present\n--Their flagella lack microtubules\n--No membrane bounded organelles present
853607
procaryotic and eucaryotic
1042181
a) their lack of hemoglobin -  this is only in red blood cells, it is a protein used to carry oxygen, has nothing to do with fighting infection.\nb) their high concentration of lysosomes - lysosomes are very important in fighting disease because they contain enzymes used to kill bacteria.\nc) their very large size in comparison to microbes - all eukaryotes are huge compared to bacteria, but not all diseases are caused by prokaryotes. worms and such are also attacked by white blood cells, and they are multicelllular.\nd) their natural synthesis of antibiotic-like substances - this is very important the production of antibodies signals the other white blood cells as to what kind of invader is in the system.\ne) their lack of plasma membrane - they do have a plasma membrane all cells do.
641779
They were the first organisms to utilize photosynthesis, some of them still do. Blue green Algae also known as a cyanophyta is a prokaryote. They have been around for maybe three and a half billion years or a little longer.\n\nFor in depth on the Photosynthesis see\n\nhttp://en.wikipedia.org/wiki/Cyanophyta\n\n(Just in case you were wondering what a prokaryote is it is a cell that does not have a nucleus, it divides by binary fission, basically it is a bacteria. Some would argue that as too general that is why I put 'basically it is a bacteria.')
80564
Procaryotes and eucaryotes are types of microorganisms which are classified based on their membranes.  The main difference between procaryotic and eucaryotic microorganism is that the latter has nucleus and membrane-bound organelles while the former does not.  Furthermore, procaryotes are mostly unicellular while eucaryotes are multicellular.