A prokaryotic cell is made of Carbon (50% weight) and iron (.25%). Why is such as difference in the amounts?
967860
Well considering that most cell components are organic then it is easy to see why. Organics must contain carbon!\nFe is not present as much as it isnt needed in large quantities. Large amounts may even be poisonous!
14101
In the nucleus for eukaryote, and just floating around in a prokaryote.  The prokaryotes are Monera (bacteria) and Archaea.  More complex creatures are eukaryotes.\n\nSo nucleus is probably the answer you're looking for.
853607
procaryotic and eucaryotic
184185
Bacteria are prokaryotic organisms. They are mostly unicellular, and they have no nucleus and other cell structures.\n\nProtists and Fungi, on the other hand, are eukaryotes, which are unicellular or multicellular organisms that have a nucleus and complex structures like mitochondria and chloroplasts.\n\nfor more details, go to an encyclopedia website like http://www.wikipedia.org
393455
Carbon is a remarkable element for many reasons. Its different forms include one of the softest (graphite) and one of the hardest (diamond) substances known. Moreover, it has a great affinity for bonding with other small atoms, including other carbon atoms, and its small size makes it capable of forming multiple bonds. Because of these properties, carbon is known to form nearly ten million different compounds, the large majority of all chemical compounds. Carbon compounds form the basis of all life on Earth and the carbon-nitrogen cycle provides some of the energy produced by the sun and other stars. Moreover, carbon has the highest melting/sublimation point of all elements. At atmospheric pressure it has no actual melting point as its triple point is at 10 MPa (100 bar) so it sublimates above 4000 K. Thus it remains solid at higher temperatures than the highest melting point metals like tungsten or rhenium, regardless of its allotropic form.\n\nCarbon was not created in the Big Bang due to the fact that it needs a triple collision of alpha particles (helium nuclei) to be produced. The universe initially expanded and cooled too fast for that to be possible. It is produced, however, in the interior of stars in the horizontal branch, where stars transform a helium core into carbon by means of the triple-alpha process. It was also created in a multi atomic state
1145844
Well, iron is a metal that doesn't contain carbon. Both are elements i.e. substances that can't be broken down into simpler substances by a chemical reaction. Most of the known elements in the universe are metals eg. aluminium, gold, copper, but the non-metals are more abundant eg. oxygen, hydogen. They are termed metals because of their structure and the way in which they bond to other elements. Maybe by metal you meant metal alloy. Steel is an alloy (mixture) of iron and carbon. I think all alloys of iron have some carbon in them. Don't know if this is what you meant but it was good trying to think about an answer.
742991
I don't think so becasue prokaryotes means ''primitive cell'' so eukaryotes come form themm they are ''true cells''. \n\n2. electorn microscoep,- advantges: 3d images, very high resolution.\ndisadvanteges: long time to prepare sample, sample most be dead, electron micrsocope are expensive, and the images are in black and white.\n\n I you want to know how a susbtance enters a cells is better with a light microscope because you cant have a life cell. but i think you could still study it with electron. But take in consideration that disavantages i told you.
567550
did you mean cargo.  It has somthing to do with carbon that changes isotopes randomly.  years later there will be a change in cargo.
390508
At school I was taught that they repreduce by binary fission. I'm sure though that mitosis does ot occur due to the fact that bacteria does not possess a nucleus, therefore mitosis can't occur. \n\nI'm not sure over prokaryotic fission, but my answer would be D, if I had encountered that question.\n\nUse the following as an ideal answer: http://www.expage.com/binaryfission
924396
It is very simple. Last band gives you that answer. You need to see G=G bond and it is follow by TAG. It is definatly eukaryotic.
336932
Bacteria are prokaryotic, meaning 'without nucleus'. The basic bacteria has a cell membrane, which holds in its cytoplasam and genetic material. The bacteria holds lots of ribosomes for creating proteins, which are ever so important in a living organism. Bacteria do not have a cell wall, this is plant cells (eukaryotic) only. Some bacteria have tiny hairs covering the body called silia aiding in movement. Other have a single hair, or maybe two, this is called a flagellum. I typed this fast so spelling may be off, but the information is correct.\n\nthefeistyguy
612593
let the molecular mass of haemoglobin be 'x' and let us consider 1 molecule of it.\ngiven that 4% of x = 56 (atomic mass of iron)\nthis implies x=56 * 100/4 = 56 * 25 = 1400 atomic mass units (amu)\n\nmessage to the next answerer (chemmie) - i was only following the information given in the question.. but i think you are right,, i think haemoglobin has 0.4 % Fe and not 4%... but i had to answer the question according to given data :)
613065
In my own observation, all micro organisms puzzle the modern biologists, especially the inexplicable origin of the life force behind the protoplasm in the living nucleus.  All that they have done so far is to name and describe the composition (oxygen, hydrogen, carbon, nitrogen, calcium, magnesium, sulfur, potassium, etc.) and the observable phenomena surrounding the cell.  \n\nOn the othe hand, it is also possible that biologists understand this already, they are just trying to find the right time and the right words to make us understand.  As the saying goes: "The teacher will appear when the student is ready."
985592
Carbon:  12.01 g\nNeon:  20.18 g\nIron:  55.85 g\nUranium:  238.03 g
583475
Theoritically, the prokaryotic cells can go on dividing, but generally they stop doing so, under natural circumstances (in their colonies), because of lack of nutrition and the toxic substances which they produce. They can divide infinitely if u'd keep on replenishing their growth medium.\nBut, in eukaryotes, the ends of chromosmes have region known as the TELOMERE, and with each cell division this keeps on getting shortened because of an enzyme known as TELOMERASE. When this telomere becomes shorter than a critical length the cell stops dividing, or at least its mitotic potential is reduced. This is the reason there's a phenomenon like aging (senescence).\nIt is said that in tumors the something could be going wrong with the telomerase and that's why the cells keep on dividing.\nIn general, the faster particular cells divide, the less differentiated (structural and functional development) they would be. So, WBCs and skin cells, which are structaurally and functionally some of the simplest cells have the highest rate of turnover (destruction and replacement), whereas the nerve cells (neurons) have the lowest.
131498
Eukaryotes contain membrane-bound nuclei and other organelles, while prokaryotes lack this membrane-bound nucleus. Prokaryotes are classified in two kingdoms separate from the eukaryotes. Eukaryotes are the type of cells that make up plants and one celled organisms, but not animals.\n\nBut there is a longer discription on:\nhttp://ks.essortment.com/prokaryoteseuka_rgbo.htm
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?