what is concentration cell with transference?
468097
Lithium cells are becoming an increasingly important part of portable power sources due to their high energy density and low weight. To fulfill their full potential, lithium cells must overcome several limitations. The most significant of these limitations is the formation of ion gradients in the cell’s electrolyte. Such gradients impede the amount of current that the cell can produce. Overcoming this limitation will allow lithium cells to output an increased amount of current.\n\nBased on earlier studies that have been conducted on lithium / silver salt cells, it was observed that current output depended on electrolyte concentration, viscosity, and the particular anion of the silver salt. From reading and consultation, I have come to focus subsequent studies on the effect of these variables on the formation of ion gradients in these cells as an underlying factor effecting the current output.
690032
It is a state of mental workload, usually when one is mentally saturated, (busy) it is an additional demand placed by the eyes or senses on the temporal lobe that requires satisfaction....\nEg:\nYou are trying to solve a complex equation and have about two pages of formula written and are concentrating when you smell the perfume of someone who walks by, this temporal demand requires the brain to momentarily pause and handle this demand, we might choose to satisfy it by looking up or we might disregard it by continuing work, either way it is a temporal demand that we satisfy.
633735
im pretty sure that it would be your brain cells. tiny powerhouses sending information to one another. there alive but there are primitive by themselves.
1160216
From the standpoint of memories existing in the cells of the body rather than in the brain, there have been reported cases of recipients of donated organs developing interests and tastes that correspond to those of the donor.  There have also been a few reported cases of memories of the donor surfacing.\n\nIt has been suggested that memories are stored in more than just the brain.  The nervous system runs throughout the body and it is connected to the brain.  Neuropeptides, chemical signals used by neurons to communicate information, have been found in all types of cells in the body and could be an indicator that some of the brain's functions may be distributed throughout the body.\n\nA paper published by the University of North Carolina lists several cases of memory transfer in donor recipients (see the source link below).
270139
If you mean conductometric TITRATION, it won't work.  Assuming they're both at the same concentration, you'll get a flat line.  Conductance is a rough measure of the ion concetration.  The start (H+ + Cl-) has the same number as equivalence (Na+ + Cl-).  Adding more (Na+ + OH-) past equivalence will not change the concentration either.
95798
I'm thinking concentration, but your question is worded sort of oddly... Does that fit with what you've been learning????  It's usually percent by mass I think...
637350
INFORMATION IS CONDUCTED ELETROCHEMICALLY BY THE NEURONS THROUGH VARYING CONCENTRATIONAS OF Na and K ions across the myelin seath of the neurons.in a neuron at rest there is more conc. of k ions on the inner side(this is the polarised region) and more conc. of Na ions on the outer side(depolarised region) .thus the inner side is at a greater potential than the outer side .when a stimulas is received the conc. in a particular regin of the neuron begins to change. K IONS move to the outer side and Na ions move to the inner side.now in that part of the neuron the outer membrane is at a higher potential than the the inner membrane. in the outer region the Kions are surrounded by large number of Na ions due to this a current sink develops and the K ion move back to the inner side while Na ions move back to the outer region and this region gets repolarised.but the region next to this gets deolarised in the process.thus the nerve impulse travels across the neuron as a wave of polarisation, depolarisation and repolarisation.\n           as the nerve impulse reaches the terminals of the neuron called dendrites the vesicles present there release ascetylcholine and this neurotransmitter transfers messages from one neuron to another and the above process continues till the message reaches the concerned organ.
305414
That is ridiculously easy if you take one second to think.  Look past the details.  The volume will go from 1ml to 10ml with nothing else changing.\n\nThe volume will increase by ten so the concentration will decrease by a factor of ten and that is that.
360139
A solution with the same ionic concentration as a cell.  For example, PBS is a isotonic solution with respect to human cells.  Hypertonic is higher ionic concentration, hypotonic is lower ionic concentration.  hyptonic solns will lyse cells because of osmosis, water flows into the cells while solutes flow out of the cell, to reach equilibrium.  Thus cells will lyse in water without signficant amts of solvents.
861890
Molecules go in and out from the cell at same rate thats is why it is called EQUILIBIRIUM
952788
A=E*d*C\n\n(d=length of the path of the light through the solution)\n\nIf you have only one value of absorbance then obviously there is no way of determining the concentration without the molar extiction coefficient (E).\n\nIn practice even if you know E, you don't use it to find the unknown concentration. Instead you measure the A of standard solutions and do a standard curve. From the equation of that curve (which you find using linear regression) and the value of A of your sample you calculate the unknown amount. \nThe standard curve doesn't need to be A vs mole/lt. It can be A vs anything e.g. g/ml, mg/ml, ppm or even just g, mole, etc. the only thing that changes is what the slope represents.\nFor example for A vs mole/lt the slope corresponds to E*d, for A vs g/lt the slope corresponds to E*d/MW, etc.\n\nIf you  always have the same volume of sample you can do the curve A vs grams directly. Then if V is the volume of the sample, the slope corresponds to E*d*V/MW\n\nEven if your standard curve is expressed in moles/lt you can convert it to grams. You just need the MW of the compound and the volume, not E...
166540
It's produced by the brain. However, I have some vague recollection of them making an inverse of dopamine molecule that can be absorber into the brain for like, diabetics or something, cant remember.
703068
Hey we were learning about that in school this week. anyway Active transport is the "movement of materials through a cell membrane using energy"\nand Diffusion is "the process by which molecules tend to move from a area of higher concentration to an area of lower concentration\n\nactually diffusion is a form of active transport so really that is the similarity because its like parts of a whole((sorry if this was confusing))\n\n~*~*~*~*~*~*~*~~*~*~*~*~**~*~*~*~*~*~*~\nMy name is Brittany ((LoL i knrew it would be confusing))\n~*~*~*~*~**~*~*~*~*~**~*~*~*~*~**~*~*~\nim in 7th too. ((if its not too much can you e~mail me?))\n~*~*~*~*~**~*~*~*~*~*\nalright
792788
The referee.  He directs the rest of the activity in the basketball court.\n\n(This is not a very good analogy!  If your teacher is telling you that a cell is like a basketball court, he's a worthless git;  I'd like to see someone use one of these "city" cell analogies to explain mitosis.  LOL).
75901
A chemical reaction in your brain.
846092
If you mean the biology term "active transport" I can answer...\n\nCell fluids have stuff dissolved in them like oxygen, nutrients, salt and different ions, etc... The concentration of this stuff inside the cell usually must be equal to the concentration of the stuff in the fluids outside the cells. "Dissolved Stuff" usually moves from areas of high concentration to areas of low concentration to balance out the amounts in both areas. \n\nThink of opening a bottle of perfume in a room. Gradually the scented molecules of perfume make their way around the room and, if given a long enough time, fill the room to an equal concentration. You could tell by observing that the smell of the perfume would be more or less the same strength everywhere in the room.\n\nWell, this process is diffusion- movement of fluid (in this case, perfume and air molecules) from high concentration ( the bottle) to low concentration (the room).\n\nActive transport is the opposite in many ways- it is the movement of fluid from low to high concentration. Sort of like putting the perfume smell back in the bottle. You might realize that this is not the natural tendency for things and you'd be right. Acitive transport is "active", requiring energy and or specialized cell structures to happen. \n\nDiffusion and active transport take place through semi-permeable membranes in plant and animal cell structures- sort of like a layer of plastic with very very very tiny holes poked in it that allow only certain sized molecules to get through.\n\nHope this helps!
133310
The simple explanation to explain the two is this: in diffusion, chemicals move down a chemical gradient (ie from a place of high concentration to a place of low concentration, the same way that heat flows from a hot object to a cold object).\n\nSimple diffusion is when a chemical transverses any membranes of it's own accord.  For instance, the brain is sheilded from the potentially toxic material in the blood stream by a layer of lipid-rich cells that line the cerebral blood vessels.  The only things that can get through this barrier are those that have special gates in the cell membranes to allow them through (either by facilitated diffusion or active transport), or if a chemical is sufficiently lipophillic (ie solutble in oil) it will be able to diffuse across the blood brain barrier.  Hence, the majority of psychoactive drugs--which need to cross the blood brain barrier to exert their effects on the CNS--are lipophillic.  Since they are foreign elements that the body is not specifically geared to allow, they can only reach the brain by simple diffusion through the membranes.  Steroid hormones, generally derived from highly lipophilic cholesterol, are likewise able to freely diffuse across the cell membranes without needing protection from hydrophobic interiors of the lipid bilayer membranes.\n\nFacilitated diffusion is when the diffusion down the chemical gradient is made possible by the existance of channels that will allow molecules that cannot cross the membranes alone (either due to size or due to thermodynamically unfavorable interactions with the membrane interior) to cross.  An example is the potassium leak channel in the neuron.  The potassium ion is charged, and hence is only souble in polar solvents like water--it is very thermodynamically unfavorable for it to interface directly with the lipids in the membrane interior.  So channles, with a hydrophilic core allow the ions to diffuse out of the cell while side-stepping thermodynamic issues.\n\nBoth of these types of diffusion need to be distinguished from active transport, where a chemical moves UP a gradient by being coupled with a spontaneous, energy releasing activity (like the hydrolysis of ATP).