what is the process by which a cell flows around a particle, totally engulfing it?
368751
it is called endocytosis and it is a form of bulk movement in for cells. "endo-" meaning in, "-cytosis" meaning cell. \n\nEndocytosis is a process whereby cells absorb material (molecules or other cells) from outside by engulfing it with their cell membranes. It is used by cells (especially protists) because most substances important to them are polar and consist of big molecules, and thus cannot pass through the highly hydrophobic plasma membrane.
28965
Assuming you're asking about a plain ol' atomic bomb, the process at its heart is called fission. At the core of such a bomb is a relatively unstable material, like uranium. Surrounding this core is a shaped explosive charge. When this charge is set off, the core material undergoes tremendous compression, increasing its density to the point that individual sub-atomic particles (neutrons) ram together which releases more particles which ram together, which releases more particles, and so on. Each particle collision releases energy --- nuclear fission has occurred and the bomb detonates.
60998
From Wikipedia:\n\n"Fluorescent-activated cell sorting is a type of flow cytometry, a method for sorting a suspension of biologic cells into two or more containers, one cell at a time, based upon specific light scattering and fluorescent characteristics of each cell. FACS was the first flow cytometric technology.\n\nThe cell suspension is entrained in the center of a narrow, rapidly flowing stream of liquid. The flow is arranged so that there is a large separation between cells relative to their diameter. A vibrating mechanism causes the stream of cells to break into individual droplets. The system is adjusted so that there is a low probability of more than one cell being in a droplet. Just before the stream breaks into droplets the flow passes through a fluorescence measuring station where the fluorescent character of interest of each cell is measured. An electrical charging ring is placed just at the point where the stream breaks into droplets. A charge is placed on the ring based on the immediately prior fluorescence intensity measurement and the opposite charge is trapped on the droplet as it breaks from the stream. The charged droplets then fall through an electrostatic deflection system that diverts droplets into containers based upon their charge.\n\nFluorescent-activated cell sorting is used in the secretion assay process."
140123
The air passes through a membrane that is charged so that charged particles in the air are attracted to it.  Not only does this move the air, but it takes the particles out of the air.
203868
Cytoplasmic streaming is the movement of organelles and vesicles in a cell from one location to another via the network of actin.  It would be very important in transporting proteins in a certain region of the cell where it is needed, or moving chloroplasts in plant cells to a location where they can receive light.  Without cytoplasmic streaming, it would be impossible to move these organelles, making it impossible for a cell to work efficiently.
699724
fluids - convection is due to the movement of molecules
252836
The cell membrane regulates what comes in and what leaves the cell....it kind of acts like a filter!
861890
Molecules go in and out from the cell at same rate thats is why it is called EQUILIBIRIUM
294367
They are pulled apart by the mitotic spindle fibers. This happens in anaphase of mitosis. :-)
935951
A charged particle is surrounded by an electric field that radially projects from the center of the particle.  This electric field will exert a force on other charged particles, either attractive or repulsive (like charges repel, unlike attract).  When a charged particle moves, a magnetic field is generated around the particle.\n\nAn uncharged particle like a neutron has no electric field or magnetic field around it and doesn't interac,t as previously described, with other charged particles.\n\nAs to shape, the spherical shapes generally assumed are really a simplification.  New shapes for protons, for example, are being discovered.  check out this link: \nhttp://www.physlink.com/News/Story.cfm?ID=25
773799
Cell walls surround the cell outside of the plasma membrane.  When water flows into the cell by osmosis, the cell swells until its membrane builds up pressure against the cell wall.  The cell wall prevents the cell from swelling and bursting in a hypotonic solution.
695956
They basically bombard one existing element with particles and try to get em to stick. =)
459336
That is too vague a question. There will be different answers if you mean what will happen if a cell is placed in a liquid SOLUTION which has more of a specific substance than the cell. It will also be different if the solution you are talking about is simple air or only one gas.\nGenerally, however, the cell will attempt to balance the pressure within its membrane and outside its membrane in order to stop itself from exapnding so much it rips it self apart (There are only a certain number of lipids in the lipid bilayer of cells, and if the surface area of the cell increases too much, they will not be able to keept in contact with each other and therefore keep the membrane intact) or becomming squished because it cannot counter the outside pressure and is therefore forced to fold in upon itself.
894801
Cells are dying and multiplying constantly, your question is like asking how many gallons of water are in the Atlantic Ocean..☺
741940
By the ionization of the cells, for one. Radiation strips electrons from atoms making up the molecular machinery of the cell; as you may realize, this can't be good. Structures lose form/lose function.
217138
the particles move faster.
282678
I mean no disrespect, but as someone who understands Brownian motion, I am totally confused by the balloon, fans and stadium example. Let me try and simplify this for you and answer your question about an experiment.\n\nThe term Brownian motion (in honor of the botanist Robert Brown) refers to either "The physical phenomenon that minute particles immersed in a fluid move about randomly" \n\nThis is equally true for particles moving through air in a random motion while being bombarding by air molecules. The experient we did at school was as follows.\n\nTake a closed glass box with two chimney outlets. One chimney is covered by an oil soaked rag and the other left open. Light the oil rag and you will see the oil smoke moving through the glass box as the oil particles bounce off the air molecules in the box. Eventually you will see that the smoke fills the box eventhough no draft was added.\n\nThis is how most smells travel through a room without air flow.\n\nHope this helps