What Are Two Variables That Affect The Rate Of Diffusion?

Why do you think the urea was not able to diffuse through?

The urea molecules were not able to diffuse through the 20 MWCO membrane because they were too large to fit through the pores.

Glucose molecules were able to diffuse through the 200 MWCO membrane, but albumin could not..

What are 3 factors that affect diffusion?

The rate of diffusion is affected by the concentration gradient, membrane permeability, temperature, and pressure. Diffusion takes place as long as there is a difference between the concentrations of a substance across a barrier.

What makes diffusion faster?

The rate of diffusion depends on three factors: distance – if the diffusion distance is small, diffusion happens faster because the particles do not have as far to travel. … surface area – the larger the surface area the higher the number of particles that will be able to move in a given time so the faster the rate.

Why does increasing pressure increase filtration rate but not concentration?

Pressure increased the filtration rate but not the concentration of solutes because it increased the hydrostatic pressure gradient that exists. … This is because there needs to be a gradient present for the sodium potassium pump to fully be active and transport sodium.

What are the factors affecting rate of diffusion?

The greater the difference in concentration, the quicker the rate of diffusion. The higher the temperature, the more kinetic energy the particles will have, so they will move and mix more quickly. The greater the surface area, the faster the rate of diffusion.

Which variables affect the rate of diffusion quizlet?

Terms in this set (7)extent of the concentration gradient. greater the difference in concentration, the more rapid the diffusion. … mass of the molecules diffusing. … temperature. … solvent density. … solubility. … surface area and thickness of the plasma membrane. … distance travelled.

Does pH affect rate of diffusion?

The bigger the difference between the two sides of concentration, the faster the molecule will diffuse. Why does pH affect the rate of diffusion? The acidity of alkaline properties of the solute can affect the stability of the cell(s). … It can occur if there is a concentration gradient, and if the membrane is permeable.

What is the formula for rate of diffusion?

(volume or number of moles per unit time). Rate2 is the rate of effusion for the second gas. M2 is the molar mass of gas 2. Graham’s law states that the rate of diffusion or of effusion of a gas is inversely proportional to the square root of its molecular weight.

When diffusion stops we say it has reached?

Diffusion stops when the concentration of the substance is equal in both areas. This does not mean that the molecules of substance are not moving any more, just that there is no overall movement in one direction. Molecules of substance are moving equally in both directions.

What happened when you increase the amount of ATP dispensed with the same concentration of sodium?

More ions were transported. What happened to the ions when you increased the amount of ATP dispensed with the same concentration of sodium and potassium on either side of the membrane? … There was no sodium transported, even though ATP was present.

Which factors do not affect the rate of diffusion?

The factor that does not affect the rate of diffusion are the electrical charges of the diffusion particles.

What are the 5 factors that affect diffusion?

Several factors affect the rate of diffusion of a solute including the mass of the solute, the temperature of the environment, the solvent density, and the distance traveled.