how big is a mitochondria in an animal cell compared to the nucleus?
956296
here are images, you can scale them with your ruler to get an idea of relative sizes\nhttp://images.search.yahoo.com/search/images/view?back=http%3A%2F%2Fsearch.yahoo.com%2Fsearch%3Fsearch%3Danimal%2Bcells%2Bphoto%26ei%3DUTF-8%26ico-yahoo-search-value%3Dhttp%253A%252F%252Frds.yahoo.com%252F_ylt%253DAhk.9Lq0v1ZiUw9yzwyI1hoazKIX%252FSIG%253D111gjvvgj%252F%252A-http%253A%252F%252Fsearch.yahoo.com%252Fsearch%26ico-wikipedia-search-value%3Dhttp%253A%252F%252Frds.yahoo.com%252F_ylt%253DAqcBCwIynWkVIsTriayPtOEazKIX%252FSIG%253D11ia1qo58%252F%252A%252Ahttp%25253a%252F%252Fen.wikipedia.org%252Fwiki%252FSpecial%25253aSearch%26p%3Danimal%2Bcells%2Bphoto&h=311&w=432&imgcurl=www.tvdsb.on.ca%2Fsaunders%2Fcourses%2Fonline%2FSNC1D%2FVejvoda%2Fbiology%2Fcell_animal_detailed.jpg&imgurl=www.tvdsb.on.ca%2Fsaunders%2Fcourses%2Fonline%2FSNC1D%2FVejvoda%2Fbiology%2Fcell_animal_detailed.jpg&size=31.9kB&name=cell_animal_detailed.jpg&rcurl=http%3A%2F%2Fwww.tvdsb.on.ca%2Fsaunders%2Fcourses%2Fonline%2FSNC1D%2FVejvoda%2Fbiology%2Fcell_Parts.htm&rurl=http%3A%2F%2Fwww.tvdsb.on.ca%2Fsaunders%2Fcourses%2Fonline%2FSNC1D%2FVejvoda%2Fbiology%2Fcell_Parts.htm&p=animal+cells&type=jpeg&no=2&tt=857&fr=ks-ans\n\nhttp://rds.yahoo.com/_ylt=A0Je5mdem1FFiWkBxiWjzbkF;_ylu=X3oDMTA4NDgyNWN0BHNlYwNwcm9m/SIG=125keeokh/EXP=1163062494/**http%3a//micro.magnet.fsu.edu/cells/animalcell.html
156389
plant cells form a disk during the final splitting phase, while animal membranes constrict.  Also, it is easier to see earlier in animals, and animals have centrioles, plants dont.  thats all my textbook says.  the phases and everything are the same, though.
824841
cell, chromosome, gene, nucleotides, base subunit, atom, nucleus\n(biggest to smallest)\n\ndepending on the question referring to the atomic nucleus not the cellular one\n\nif it referrs to the cellular nucleus it is smaller than cell, bigger than chromosome
530041
Organisms resembling the mitochondria in cells today. That is the simple reason why all living things have them and why they (mitochondria) have their own nucleic acids.
508749
The largest brain in the animal kingdom is that of a sperm whale (as much as six times the size of a human brain). The largest land animal brains are in elephants.
996733
The cell is the structural and functional unit of all living organisms, and is sometimes called the "building block of life." Some organisms, such as bacteria, are unicellular, consisting of a single cell. Other organisms, such as humans, are multicellular, (humans have an estimated 100 trillion or 1014 cells; a typical cell size is 10 µm, a typical cell mass 1 nanogram).\n\nThe cell theory, first developed in 1839 by Schleiden and Schwann, states that all organisms are composed of one or more cells; all cells come from preexisting cells; all vital functions of an organism occur within cells, and cells contain the hereditary information necessary for regulating cell functions and for transmitting information to the next generation of cells.\n\nThe word cell comes from the Latin cella, a small room. The name was chosen by Robert Hooke when he compared the cork cells he saw to the small rooms monks lived in.\n\nAll cells, whether prokaryotic or eukaryotic, have a membrane, which envelopes the cell, separates its interior from its environment, regulates what moves in and out, and maintains the electric potential of the cell. Inside the membrane, a salty cytoplasm takes up most of the cell volume. All cells possess DNA, the hereditary material of genes, and RNA, containing the information necessary to build various proteins such as enzymes, the cell's primary machinery. There are also other kinds of biomolecules in cells.
306163
Organelles\nMain article: Organelle \nThe human body contains many different organs, such as the heart, lung, and kidney, with each organ performing a different function. Cells also have a set of "little organs," called organelles, that are adapted and/or specialized for carrying out one or more vital functions. Membrane-bound organelles are found only in eukaryotes.\n\nCell nucleus (a cell's information center)  \nThe cell nucleus is the most conspicuous organelle found in a eukaryotic cell. It houses the cell's chromosomes, and is the place where almost all DNA replication and RNA synthesis occur. The nucleus is spheroid in shape and separated from the cytoplasm by a double membrane called the nuclear envelope. The nuclear envelope isolates and protects a cell's DNA from various molecules that could accidentally damage its structure or interfere with its processing. During processing, DNA is transcribed, or copied into a special RNA, called mRNA. This mRNA is then transported out of the nucleus, where it is translated into a specific protein molecule. In prokaryotes, DNA processing takes place in the cytoplasm. \nRibosomes (the protein production machine)  \nRibosomes are found in both prokaryotes and eukaryotes. The ribosome is a large complex composed of many molecules, including RNAs and proteins, and is responsible for processing the genetic instructions carried by an mRNA. The process of converting an mRNA's genetic code into the exact sequence of amino acids that make up a protein is called translation. Protein synthesis is extremely important to all cells, and therefore a large number of ribosomes — sometimes hundreds or even thousands — can be found throughout a cell. \nMitochondria and Chloroplasts (the power generators)  \nMitochondria are self-replicating organelles that occur in various numbers, shapes, and sizes in the cytoplasm of all eukaryotic cells. As mitochondria contain their own genome that is separate and distinct from the nuclear genome of a cell, they play a critical role in generating energy in the eukaryotic cell, a process involving a number of complex metabolic pathways. Chloroplasts are larger than mitochondria, and convert solar energy into a chemical energy ("food") via photosynthesis. Like mitochondria, chloroplasts have their own genome. Chloroplasts are found only in photosynthetic eukaryotes, like plants and algae. There is a number of plant organelles that are modified chloroplasts; they are broadly called plastids, and are often involved in storage. \nEndoplasmic reticulum and Golgi apparatus (macromolecule managers)  \nThe endoplasmic reticulum (ER) is the transport network for molecules targeted for certain modifications and specific destinations, as compared to molecules that will float freely in the cytoplasm. The ER has two forms: the rough ER, which has ribosomes on its surface, and the smooth ER, which lacks them. Translation of the mRNA for those proteins that will either stay in the ER or be exported from the cell occurs at the ribosomes attached to the rough ER. The smooth ER is important in lipid synthesis, detoxification and as a calcium reservoir. The Golgi apparatus, sometimes called a Golgi body or Golgi complex is the central delivery system for the cell and is a site for protein processing, packaging, and transport. Both organelles consist largely of heavily-folded membranes. \nLysosomes and Peroxisomes (the cellular digestive system)  \nLysosomes and peroxisomes are often referred to as the garbage disposal system of a cell. Both organelles are somewhat spherical, bound by a single membrane, and rich in digestive enzymes, naturally-occurring proteins that speed up biochemical processes. For example, lysosomes can contain more than three dozen enzymes for degrading proteins, nucleic acids, and certain sugars called polysaccharides. Here we can see the importance behind compartmentalization of the eukaryotic cell. The cell could not
35330
The nucleus of an animal cell contains the DNA, a complete bluprint for creating an entire animal or when differentiated for creating specific tissue types.  The many genes in the nucleus could be pictured as a set of many ladders of various lenghts (rungs).  When the cell divides, half of each ladder collects in each new cell and regrows the missing halves.  The two halves are not identical, much like sawing the rungs of a real ladder on either side of the center and having rungs made of combinations of only four materials.  Actually, DNA is more like a twisted ladder, a helix.
953431
There are two general classes of cells: prokaryotic and eukaryotic. The evolution of prokaryotic cells preceded that of eukaryotic cells by 2 billion years.\n\nHumans, of course, are an example of multicellular eukaryotes. \nThe major similarities between the two types of cells (prokaryote and eukaryote) are: \nThey both have DNA as their genetic material. \nThey are both membrane bound. \nThey both have ribosomes . \nThey have similar basic metabolism . \nThey are both amazingly diverse in forms. \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 \nEukaryotic cells are, on average, ten times the size of prokaryotic cells. \nGenomic composition and length \nThe DNA of eukaryotes is much more complex and therefore much more extnsive than the DNA of prokaryotes. \nCell Wall \nProkaryotes 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. \n\n\nCell theory :\n1.All organisms are made up of one or more cells. \n2.The cell is the fundamental unit of structure and function in living things. \n3.All cells are essentially the same in chemical composition
814564
Endoplasmic reticulum = 1\nRibosome(s)                 = several\nNucleus                         = 1 but has an inner Nucleolus\nlysosome                      = several\ngolgi bodies                   = I think 1  :)\nmitochondria                 = as u said "mitochondria" & not mitochondrion, so there are several of them\nvacuole                          = several (unlike the plant cell which has one big vacuole)\ncheers
749741
Actually, there is a lot of evidence that mitochondria may have originated as independent microbes, which somehow became incorporated into animal cells.  Mitochondria contain their own DNA.  Some rare genetic disorders stem from problems within the mitochondrial DNA rather than the DNA in the cell nucleus.  Incidentally, all of your mitrochondrial DNA is inherited from your mother.
727221
Eukaryotic cells have a definite nucleus, membrane bound organelles, usually larger in size (when compared to a prokaryotic cell), and certain eukaryotes are multicellular.\n\nProkaryotic cells do not have a definite nucleus, do not have membrane bound organelles, are much smaller in size (when compared to a eukaryotic cell), and are single celled.
907288
Many ways.\n\nPlants would have organelles specific to a plant and would be a rectangular shape with 2 nuclei during cytokinesis\n\nanimal would have no chroloplasts and would be oval because the nuclei push as far apart as possible and the animal cell is flexible, not rigged like a plant.
756987
The most obvious (or unobvious) is the centriole found in some nuclei.\n\nMany cells also have ribosomes and vesicles which might be hard to see except under the highest powers.\n\nThe Golgi are also exceedingly small and difficult to see.
873747
Animal and plant cells share the same basic structures with a few exceptions.  First of all, plant cells are surrounded by a cell wall made of chitin that is extremely important in regulating water levels.  Animals cells have no cell walls.  Plant cells use chloroplast to create their energy, rather than the mitochondria that humans use.  In plant cells, the storage form of glucose is starch, whereas in animal cells it is glucagon.  There are many more small differences, but these three are big ones.
969398
For one thing, mitochondria have a double membrane, so the reactions that take place within it are seperate from the cytoplasm and will not disrupt any of the cell's other activities (i.e., the mitochondria is slightly more acidic than the cytoplasm). \n\nFurthermore, the inner membrane is folded to yield a lot of surface area, thus allowing for more reactions to take place.\n\nYou could also talk about how the intermembrane space (the space between the inner and outermembranes) allows for an electrochemical gradient to be built up during the process of electron transport.
698083
Here's what they have in common:\n1. Cell membrane is present.\n2. Vacuoles are present.\n3. Both are living cells.\n4. Mitochondria is present.\n5. Both are eukaryotic cells. \n6. Nucleus, nuclear membrane and chromatin fibers are present.\n7. Both can reproduce through mitosis. (Advanced animal cells reproduce through meiosis)\n\nPS : Don't take note of those who talk of the absence of mitochondria in plants. It's present. Only chloroplast is absent in animal cell.