How many microscopic organisms (or microscopic things) can fit on the tip of a needle?
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To answer this question, you must supply two quantities:\n1) The area of the tip of the needle: let's call this value N.\n2) The area that one of your microscopic entities occupies: let's call this value M.\n\nOnce you have these two numbers, simply divide N by M to get your answer.
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see how much weight each surface can hold up. I know u can keep a needle afloat in a cup of water. Although the experiment would depend on what kind of paper and how damp it was.
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Find a different spot to insert your needle.
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In terms of how many restriction endonucleases there are "in the world", the answer could theoretically be in the millions.  Different strains of the same bacterial species can make different RE, so you can imagine the potential for variety in nature.\n\nAs for commercially available: new england biolabs sells about 230 different enzymes.\n\nAs for what's commonly used, it depends on the lab and the target organism.  The lab I got my PhD in, we worked with a low gc bacteria, and we used very different enzymes than we use in my current lab, working with a high gc bacteria.  In either case, we used 20-30 different enzymes.
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they drill it with a really thin drill. :)\nor roll it from a foil and then fuse it.\nOr cast it in a pipe with a thin rod throught the middle.\n\nif they can fit thousands of parts onto an inch-square microchip, making a needle shouldn't be that much of a problem.
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Bacteria do have fixed size and shape.\nSize varies from 0.5 to 50 microns, generally 1 to 5 X 0.5 - 1 Micron. ( 1 micron = a millionth part of a milimeter )\nShape is variation of two basic shapes - spherical i.e. Cocci (singular Coccus ) and cylindrical i.e. rods or Bacillus. All other forms are variations of these two. \nCocci in pairs - Diplococcus\nCocci in cains - Streptococcus\nCocci in clusters - Staphylococcus\nCocci in tetrads - Gaffkia\nCocci in cubes - Sarcina\nRods - Bacillus\nCurved rods - comma shaped - Vibrios\nSpirals - Spirrilum, Spirochaetes\nFilamentous - Actinomycetes\nRods wth tapering ends - Fusobacterium\nRods with bifercated ends - Bifidobaterium\nCells without cell wall do not have fixed shape, these are Mycoplasma.\nYou will get this information in any basic microbiology book or in wikipedia
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http://inventors.about.com/od/mstartinventions/a/microscope.htm
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It depends whether you are talking about organisms that are single cells, or cells that exist in eukaryotic tissues.\n\nThe problem with finding the smallest cells is that they will undoubtedly turn out to be the smallest bacteria... these organisms are likely to exist only in places that are very difficult to reach, because extremely small size is in fact an adaptation to a (typically harsh) environment: reduction in size maximises surface area in proportion to volume.  When life gets very tough, having a maximal surface area is important, because in general, important life processes occur through cell walls and surface membranes.\n\nSome hyperthermophilic archaea (archae-bacteria that colonise hot volcanic and deep subterranean environments) are rod-shaped organisms 0.17 microns in diameter (genus Thermofilium), disk-shaped organisms 0.2-0.3 microns in diameter, 0.08-0.1 thick (genera Thermodiscus & Pyrodictium).\n\nCells in the human body are typically 5-20 microns thick.  I think Bacteria_Boy could be right about the nerve cell.\n\nIndividuals of the genus Acetabularia, a protist (single-celled) marine green alga, are composed of clearly differentiated parts (eg: foot, stalk, head), but grow up to about 5 cm in height.  These are the largest single-celled organisms that I know of.
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Yes. You see when a paramecium reproduse by meansof fision, the resulting organism are having the same size. In the case of the yeast, a bud is much smaller.
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Gosh!  They are unlimited.  A simple cup, a simple cylinder, a funnel. those are just some symmetric shapes.
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put the needle and let it run out a little
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in what kind of organism???\n\nit must be a lot for polychaeta, about 2 or 3 pairs in each segments.\n1pair  for oligochaeta
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Probably carbon latice structures, like buckeyballs or nanotubes.  These could then contain the smaller compounds that are doing the desired work.
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Bacteria, amoebas and fungi
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One really easy answer is DNA sequencing. Nanotechnology deals with objects measured in the billionths of a meter. Most say objects less than 100 nanometers. Therefore, although the length of a DNA Strand is way to long to be considered Nanotechnology the individual base pairs fit into nanotechnology perfectly.
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there are many biological tools. few of them are,\n\nIncubators : which are used for growing microbes on laboratory media...they are maintaiined at different temperatures for bacteria, fungi and algae.\n\nLaminar air flow and saftey cabinets: used for carrying out microbiological work aseptically.\n\nAutoclave : Used for sterilization of microbiological medias\n\nBalances : Used for weighing media's\n\nhope that's enough for you.
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small insects/small vish