Question

In: Biology

In a dialyse machine there are two liquids separated by a permeable membrane. The idea of...

In a dialyse machine there are two liquids separated by a permeable membrane. The idea of a dialysis machine is to get rid of certain substances in the blood which will be toxic if they get too concentrated.
1) what is one such substance?
2) describe how you would make up the composition of dialysis fluid to make sure that this potentially toxic substance is got rid of

The blood contains dissolved substances that you want to keep.
3) Give one example of such a substance
4) how you would make up the composition of dialysis fluid to make sure that the person having dialysis doesn’t loose this substance?
5) explain the principle (concept or idea) which results in blood not losing this substance

Solutions

Expert Solution

ANSWER 1)
One such substance would toxins such as Lithium, which should have been removed by a well-functioning kidney, but requires dialysis on the absence of one.

ANSWER 2)
We can make up the make up the composition of dialysis fluid to exactly resemble every other component of blood except this toxin, the concentration of this toxin in the dialysis fluid should be zero. This will ensure that this potentially toxic substance is got rid of.

ANSWER 3)
One such substance that would be dissolved in blood and should not be lost in dialysis is dissolved oxygen because it is essential for many activities.

ANSWER 4)
We can make up the make up the composition of dialysis fluid to have the exact same concentration of the dissolved substance that we want to keep as is its concentration in blood. This will ensure that this dissolved substance of need will not be able to diffuse through from the blood to the dialysis fluid.

ANSWER 5)
The principle (concept or idea) which results in blood no losing this substance is called isotonicity. Since the concentration of this item is the same on both sides, there exists no concentration gradient (driven by Brownian motion) to cause any transfer of material from the side with higher concentration to the side with lower concentration.
Thus making the dialysis fluid have the same concentration of the substance as blood, causes there to be no concentration gradient which is the driving force for diffusion.


Related Solutions

Two arms of a U-tube are Separated by a semi permeable membrane. In the left arm...
Two arms of a U-tube are Separated by a semi permeable membrane. In the left arm is a sucrose solution with the solute potential of -0.5 MPa and the right arm is a difference sucrose solution with solute potential of -2.5 MPa. (A) which arm of the tube has a higher concentration of sucrose? (B) what is the molar contraction of sucrose on both sides of the membrane with temperature of 20 Celsius? (C) in which direction does water movement...
Osmosis occurs when two solutions of different concentrations are separated by a semipermeable membrane. The membrane...
Osmosis occurs when two solutions of different concentrations are separated by a semipermeable membrane. The membrane allows solvent particles, but not solute particles, to pass through. Thus, the solvent moves toward the solution of higher concentration (to dilute it) until the two solutions have the same concentration, or until gravity overtakes the osmotic pressure, Π. The osmotic pressure between a solution and pure solvent depends on the number of solute particles and thus is a colligative property. It can be...
Name a membrane component that makes the membrane more permeable and one that reduces the permeability....
Name a membrane component that makes the membrane more permeable and one that reduces the permeability. Explain why each component affects the permeability it does.
1. The membrane is more permeable to K+ than to Na+: a. At resting membrane potential...
1. The membrane is more permeable to K+ than to Na+: a. At resting membrane potential b. During the depolarization phase of an action potential c. After a neurotransmitter in an excitatory synapse binds to the postsynaptic cell d. More than one of the above is correct 2. During an action potential, the depolarization of the neuron membrane is the result of: a. Sodium moving into the cell b. Potassium moving into the cell c. Sodium moving out of the...
(a) A vessel is separated into two parts, A and B, by a bilayer lipid membrane...
(a) A vessel is separated into two parts, A and B, by a bilayer lipid membrane containing Na+ channels. Part A holds an aqueous solution of NaCl with concentration 0.15 mol L-1 and of disaccharide sucrose with concentration 0.01 mol L-1 . Part B holds an aqueous solution of NaCl with concentration 0.015 mol L-1 . Calculate the electrical potential between the two sides of the membrane at 30 oC and at 50 oC. Neglect the effect of temperature on...
(a) A vessel is separated into two parts, A and B, by a bilayer lipid membrane...
(a) A vessel is separated into two parts, A and B, by a bilayer lipid membrane containing Na+ channels. Part A holds an aqueous solution of NaCl with concentration 0.15 mol L-1 and of disaccharide sucrose with concentration 0.01 mol L-1 . Part B holds an aqueous solution of NaCl with concentration 0.015 mol L-1 . Calculate the electrical potential between the two sides of the membrane at 30 oC and at 50 oC. Neglect the effect of temperature on...
(a) A vessel is separated into two parts, A and B, by a bilayer lipid membrane...
(a) A vessel is separated into two parts, A and B, by a bilayer lipid membrane containing Na+ channels. Part A holds an aqueous solution of NaCl with concentration 0.15 mol L-1 and of disaccharide sucrose with concentration 0.01 mol L-1 . Part B holds an aqueous solution of NaCl with concentration 0.015 mol L-1 . Calculate the electrical potential between the two sides of the membrane at 30 oC and at 50 oC. Neglect the effect of temperature on...
two solutions can be found on either side of a semi-permeable membrane. a 4.0m sucrose solution...
two solutions can be found on either side of a semi-permeable membrane. a 4.0m sucrose solution is found on the left side and a 2.0m Nacl solution is found on the right side. which direction will the solvent flow? Also what would happen if it was 2.0m nacl on left and 4.0m sucrose on right ? what if it was 2.0nacl and 2.0m sucrose ? please explain thanks
A cell membrane at 37°C is found to be permeable to Ca2+ but not to anions,...
A cell membrane at 37°C is found to be permeable to Ca2+ but not to anions, and analysis shows the inside concentration to be 0.100 M and the outside concentration to be 0.001 M in Ca2+. a) What potential difference in volts would have to exist across the membrane for Ca2+ to be in equilibrium at the stated concentrations? Assume that activity coefficients are equal to 1. Give the sign of the potential inside with respect to the outside. b)...
(b) A vessel separated into two parts, A and B, by a bilayer lipid membrane contained...
(b) A vessel separated into two parts, A and B, by a bilayer lipid membrane contained an aqueous solution of KCl with concentration 0.01 mol L-1 in part A and 0.1 mol L-1 in part B and of NaCl with concentration 0.1 mol L-1 in part A and 0.01 mol L-1 in part B. The membrane included potassium channels, which made it permeable for K+ ions. The temperature of the vessel was kept at 30 o C. (i) Calculate the...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT