Activity 4 and 5 physioex
Activity FOUR
There is a direct relationship between the MWCO and the filtration rate; the higher the MWCO, the higher the filtration rate.
Powdered charcoal is the solute that did not appear in the filtrate when using any MWCO membranes.
As pressure increases, the filtration rate also increases, as long as the MWCO does not decrease.
Since we have no control over the MWCO of a living membrane, we can increase the rate of filtration by increasing the pressure.
The molecular weight of glucose is greater than Na+Cl- but less than powdered charcoal.
Activity FIVE
Na+ reaches equilibrium before K+, hence reaching equilibrium before the end of the transport time.
Nothing would happen without ATP because active transport requires the use of ATP to function.
The rate of active transport increases when the ATP concentration increases, in this case, from one unit of ATP to three units of ATP.
The rate of active transport of sodium potassium pumps will decrease dramatically due to the lessened concentration of pumps.
If the same transport was run without ATP. it would not work, hence justifying that it is not simple diffusion, and rather was active transport, which requires the use of ATP.
No, because the two substances are the same in each beaker, causing no effect on Na+ transport as they are at equilibrium.
The rate of ion transport would increase when the number of sodium-potassium pump proteins increase.
In these membranes, it would not affect Na+ and K+ transport because glucose is too big of a molecule.
There is a direct relationship between the MWCO and the filtration rate; the higher the MWCO, the higher the filtration rate.
Powdered charcoal is the solute that did not appear in the filtrate when using any MWCO membranes.
As pressure increases, the filtration rate also increases, as long as the MWCO does not decrease.
Since we have no control over the MWCO of a living membrane, we can increase the rate of filtration by increasing the pressure.
The molecular weight of glucose is greater than Na+Cl- but less than powdered charcoal.
Activity FIVE
Na+ reaches equilibrium before K+, hence reaching equilibrium before the end of the transport time.
Nothing would happen without ATP because active transport requires the use of ATP to function.
The rate of active transport increases when the ATP concentration increases, in this case, from one unit of ATP to three units of ATP.
The rate of active transport of sodium potassium pumps will decrease dramatically due to the lessened concentration of pumps.
If the same transport was run without ATP. it would not work, hence justifying that it is not simple diffusion, and rather was active transport, which requires the use of ATP.
No, because the two substances are the same in each beaker, causing no effect on Na+ transport as they are at equilibrium.
The rate of ion transport would increase when the number of sodium-potassium pump proteins increase.
In these membranes, it would not affect Na+ and K+ transport because glucose is too big of a molecule.