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Dictionary » D » Dialysis
Separation of substances in solution by means of their unequal diffusion through semipermeable membranes.
Dialysis is the separation of small solute molecules or ions (e.g., glucose, Na+, Cl-) from macromolecules (e.g., starch) by virtue of their differing rates of diffusion through a differentially permeable membrane.
Dialysis a method for separating molecules of different sizes by diffusion through a partially permeable membrane.
Dicotyledon a flowering plant that produces seeds with two cotyledons.
Differentiation the process by which cells become specialized for a particular function.
Which of the following organelles do not contain a double-membrane?
Hemodialysis is the artificial blood filtration made by specific machines in substitution of the kidneys. Hemodialysis may be necessary in patients suffering from diseases that cause renal failure, like diabetic renal complications, lupic renal complications and others.
People with malfunctioning kidneys often have to go through a process called dialysis where they are hooked up to a machine that filters their blood. The machine acts as an artificial kidney and tries to re-establish normal levels of ions and water in their bodies.
4 liter (13.5 fluid ounces) of urine per day is insufficient to eliminate wastes and regulate the composition of blood. Such a condition is always fatal within a few weeks unless the underlying cause is corrected, a new kidney is transplanted, or the blood is artificially cleared by dialysis .
The two Max isoforms were also individually mixed with Myc under denaturing conditions, allowed to refold using a step dialysis protocol, and then purified to obtain native, homogeneous heterodimers of Myc-MaxS and Myc-MaxL (Figure 3A).
The assembly mixtures were then transferred to a 96-well microdialysis device (Spectrum Laboratories). The RNAPs were automatically assembled by gradually lowering the urea concentration in the dialysis chamber from 6 M to urea-free over a period of 16 h using a robotically controlled pump.
A dialysis machine which is used for people with kidney failure cannot differentiate between the useful and toxic molecules in the blood filtrate. All the small and middle-sized organic molecules are dialyzed away, irrespective of their value to the person.
The cell membrane, along with such things as dialysis tubing and cellulose acetate sausage casing, is such a membrane. The presence of a solute decreases the water potential of a substance.
A particular concern is the contamination of medical devices such as urinary catheters, hemodialysis equipment, and medical and dental implants. Biofilms that develop on these devices can increase the risk of patient infection.
An equal amount of this paste was added to a solution of protein and to a solution of starch in separate dialysis tubing. The dialysis tubing was left in separate beakers of water for two hours. The chromatograms show the results of this investigation.
And that's because water has the ability to go through a number of different membranes. This black line here that I drew in I'm using it to represent some kind of membrane. Well it's a cell membrane, a special kind of plastic or dialysis tube whatever.
See also: Lysis, Trans, Blood, Protein, Molecule