How can you increase the filtration rate in living membranes?

Your Answer: In a living membrane, you can increase the filtration rate through 1) increasing the hydrostatic pressure or decreasing the osmotic pressure on one side of the membrane, 2) increasing the size of the pores, and 3) increasing the osmotic pressure or decreasing the hydrostatic pressure on the other side of …

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What drives filtration through a membrane quizlet?

What process drives filtration? bulk flow driven by hydrostatic pressure of the blood. Water and small molecules are forced out as filtrate while larger proteins and blood cells are excluded or retained.

Which of the following resulted in an increase in the filtration rate which of the following resulted in an increase in the filtration rate?

Which of the following resulted in an increase in the filtration rate? Both increasing the pressure above the beaker and increasing the concentration of solutes are correct. Both increasing the pore size and increasing the pressure above the beaker are correct.

Which of the following is required for filtration?

Which of the following is required for filtration? Both a membrane and a hydrostatic pressure gradient are required.

How does pore size affect filtration?

It was found that the average pore size was the main factor affecting the filtration performance of the fabric structure of the surface filtration media: the smaller the average pore size of the filter media, the higher would be the filtration efficiency and greater would be the filtration resistance of the fabric …

Why does increasing the pore size increase the filtration rate?

Pore size increased filtration rate because, as pore size increases, resistance to flow decreases. Many analogies are possible: electricity flows more quickly down a wider wire; sand falls more quickly through a sieve with bigger openings; etc. 2.

Which of the following does not increase the rate of diffusion?

The amount of energy available for transport molecules does not affect the rate of diffusion.

What effect will increasing the pore size of the filter have on the filtration rate?

Your answer: Increasing the pore size increases the filtration rate because the solution will run through the filter membrane faster.

Which of the following would result in no change in osmotic pressure across the membrane?

Which of the following would result in NO change in osmotic pressure across a membrane? Water is moving with its concentration gradient. The solutes can diffuse through the pores and the concentration of solutes is the same on both sides of the membrane.

What will happen if you increase the pressure above the beaker the driving pressure which represents blood pressure in the human kidney )?

Terms in this set (15)

What will happen if you increase the pressure above the beaker (the driving pressure)? The filtration rate will increase.

What drives filtration through a membrane?

hydrostatic pressure: The pushing force exerted by the pressure in a blood vessel. It is the primary force that drives glomerular filtration.

Which pressure allows for the filtration?

Filtration is one of the main methods used for capillary exchange. Blood pressure provides the driving force or hydrostatic pressure to force materials out of capillaries to cells or to form the filtrate (fluid in the nephron of the kidney).

What helps transport molecules across membranes?

Facilitated diffusion is diffusion that is helped along (facilitated by) a membrane transport channel. These channels are glycoproteins (proteins with carbohydrates attached) that allow molecules to pass through the membrane.

What part of the cell membrane helps maintain flexibility of membrane?

Cholesterol molecules also keep the phospholipid tails from coming into contact and solidifying. This ensures that the cell membrane stays fluid and flexible. Some plasma membrane proteins are located in the lipid bilayer and are called integral proteins.

What would increase the rate of facilitated diffusion?

Carrier proteins increase the rate of diffusion by allowing more solute to enter the cell. Facilitated diffusion, however, approaches a maximum rate as the carrier proteins become saturated with solute.

What variables increased the rate of facilitated diffusion of glucose?

You correctly answered: The membrane proteins were saturated. What variable(s) increased the rate of facilitated diffusion of glucose? Your answer: increasing the number of membrane carriers.

What might happen to the filtration of the water pressure damage the membrane?

What might happen to the filtration membrane if the water pressure is too high? The membrane might split or the pressure might force particles through the membrane.

Does membrane pore size affect rate of diffusion?

The diffusion rates were strongly affected by the size of the solute, even when the size was well within the “exclusion limit” of the channel. In both systems, hexoses and hexose disaccharides diffused through the channel at rates 50-80% and 2-4%, respectively, of that of a pentose, arabinose.

Why is pore size distribution important for membranes?

Therefore, there is a trade-off between the flux and the solute retention. The pore size distribution is another important parameter related to the selectivity of the membrane for water filtration. Narrow pore size distribution usually offers high selectivity [82].

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

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? At what concentration of ATP were the sodium and potassium maximally transported? Transport of the ions was faster.

Which of the following does not influence filtration?

9. Which of the following does not influence filtration? Explanation: The pH of the solution does not influence the filtration of the solution. The factors that affect the filtration are temperature, density, pressure, viscosity, particle size, particle shape, charge, and corrosiveness.

What type of filter does not come under the membrane filters?

9. What type of filter does not come under the Membrane filters? Explanation: A filter cake is formed by the substances that are retained on a filter.

Which of the following will increase the rate of diffusion?

Temperature: Higher temperatures increase the energy and therefore the movement of the molecules, increasing the rate of diffusion. Lower temperatures decrease the energy of the molecules, thus decreasing the rate of diffusion. Solvent density: As the density of a solvent increases, the rate of diffusion decreases.

How does membrane permeability affect the rate of diffusion?

The two factors that are particular to diffusion through a membrane are surface area and permeability. A membrane with smaller surface area or lower permeability will impede molecular movement and thus lead to slower diffusion.

Which does not affect the rate of diffusion through a membrane?

The factor that does not affect the rate of diffusion are the electrical charges of the diffusion particles. The electrical charges do not participate in such processes.

What generates osmotic pressure?

Osmotic and oncotic pressure

Osmotic pressure is the pressure caused by water at different concentrations due to the dilution of water by dissolved molecules (solute), notably salts and nutrients.

What increased the rate of sodium potassium transport?

Internal potassium stimulates the sodium-potassium pump by increasing cell ATP concentration.

Which variables affect the filtration coefficient?

Which variables affect the filtration coefficient? Permeability of the filtration membrane. The surface area available for filtration.

Which of the following conditions would cause an increase in the glomerular filtration rate GFR )?

Glomerular filtration is occurs due to the pressure gradient in the glomerulus. Increased blood volume and increased blood pressure will increase GFR.

What can easily pass through the cell membrane?

Small hydrophobic molecules and gases like oxygen and carbon dioxide cross membranes rapidly. Small polar molecules, such as water and ethanol, can also pass through membranes, but they do so more slowly.

What effect does increasing NaCl concentration have on osmotic pressure?

Increasing the NaCl concentration increased the osmotic pressure because there was an increase in force required to oppose osmosis in the closed system. Describe one way in which osmosis is similar to simple diffusion and one way in which it is different.

Which of the following pressures promotes filtration at the glomerulus?

Glomerular blood hydrostatic pressure (GBHP) promotes filtration – it pushes water and solutes in blood plasma through the glomerular filter. GBHP is the blood pressure in glomerular capillaries, which is about 55mm Hg.

How do membranes work?

The principle is quite simple: the membrane acts as a very specific filter that will let water flow through, while it catches suspended solids and other substances. There are various methods to enable substances to penetrate a membrane.

What is membrane filtration in microbiology?

Membrane filtration is a technique for testing water samples. In this procedure, water is drawn through a special porous membrane designed to trap microorganisms larger than 0.45 μm. Afterward, the filter is applied to the surface of Endo agar plates and incubated for 24 hours.

What makes the membrane more fluid and adds to its flexibility?

Another type of lipid in the cell membrane is cholesterol that makes the membrane more fluid and adds to its flexibility. Embedded in the phospholipid bilayer are proteins that also aid in diffusion and in cell recognition.

How can membranes self repair?

Cell Concept 2: Membranes can Self-Repair. Attraction between phospholipids allows cell membranes to repair breaks in the bilayer. Like the bubble layer, cell membranes can spontaneously repair small tears in lipid bilayer. Cell Concept 3: Eukaryotic Cells Feature Membrane Bound Organelles.

How does the cell membrane help maintain homeostasis?

Cell membranes enable organisms to maintain homeostasis by regulating the materials that may enter or leave a cell. Some materials easily cross the cell membrane without the input of energy; other materials require energy input in order to cross through the cell membrane.

What drives filtration through a membrane quizlet?

What process drives filtration? bulk flow driven by hydrostatic pressure of the blood. Water and small molecules are forced out as filtrate while larger proteins and blood cells are excluded or retained.

Which pressure allows for the filtration of fluid from blood vessels?

hydrostatic pressure: A pressure generated by fluid on the walls of the capillary, usually forcing water out of the circulatory system. net filtration pressure: The balance of the four Starling forces that determines the net flow of fluid across the capillary membrane.

What are 4 methods of transport across the membrane?

Basic types of membrane transport, simple passive diffusion, facilitated diffusion (by channels and carriers), and active transport [8].

What factors influence the passage of substances through living membranes?

Concentration gradient, size of the particles that are diffusing, and temperature of the system affect the rate of diffusion. Some materials diffuse readily through the membrane, but others require specialized proteins, such as channels and transporters, to carry them into or out of the cell.

What are the factors that influence the diffusion of materials across the cell membrane?

Factor	Reason
The temperature	The higher the temperature, the more kinetic energy the particles will have, so they will move and mix more quickly.
The surface area of the cell membrane separating the different regions	The greater the surface area, the faster the rate of diffusion.

How can molecules move against the concentration gradient and equilibrium?

Examples of passive transport are simple diffusion, facilitated diffusion, filtration, and osmosis. Conversely, active transport is the transport of particles against the concentration gradient. This means that the particles are moved to an area of low concentration to an area of high concentration.

Which of the following resulted in an increase in filtration rate?

Which of the following resulted in an increase in the filtration rate? Both increasing the pressure above the beaker and increasing the concentration of solutes are correct. Both increasing the pore size and increasing the pressure above the beaker are correct.

Which factors can be changed to affect the rate of facilitated diffusion?

• Temperature- As the temperature increases, the movement of the molecules increases due to an increase in energy.
• Concentration- The movement of the molecules takes place from the region of higher concentration to lower concentration.

Why increasing the pore size increases the filtration rate?

Pore size increased filtration rate because, as pore size increases, resistance to flow decreases. Many analogies are possible: electricity flows more quickly down a wider wire; sand falls more quickly through a sieve with bigger openings; etc. 2.

How does increasing the number of protein carriers affect the diffusion rate of glucose?

What effect do you think increasing the number of protein carriers will have on the glucose transport rate? Increasing the number of protein carriers will increase the glucose transport rate.

What would happen to the filtration rate if you were to apply pressure to the filtration system?

What would happen to the filtration rate if you applied pressure to the filtration system? What might happen to the filtration membrane if the water pressure is too high? The membrane might split or the pressure might force particles through the membrane.

Which osmosis bag in your experiment gained the most weight?

Which osmosis bag in your experiment gained the most weight? Assuming no experimental errors, the osmosis bag in the zero percent sucrose solution should have gained the most weight.

What effect will increasing the pore size of the filter have on the filtration rate?

Your answer: Increasing the pore size increases the filtration rate because the solution will run through the filter membrane faster.

How does pore size affect filtration?

It was found that the average pore size was the main factor affecting the filtration performance of the fabric structure of the surface filtration media: the smaller the average pore size of the filter media, the higher would be the filtration efficiency and greater would be the filtration resistance of the fabric …

What was the effect of adding more Na +- K+ pumps to the simulated cell?

3. What was the effect of adding more Na+ -K+ pumps to the simulated cell? You correctly answered: a. Transport of the ions was faster.

What was the effect of adding more NAK pumps to the simulated cell?

You correctly answered: 3 mM ATP. What was the effect of adding more Na -K pumps to the simulated cell? You correctly answered: Transport of the ions was faster.

In which type of filter rate of filtration is more?

Characteristics	Slow Sand Filters	Rapid Sand Filters
Rate of filtration	Low, typically ranges 100 to 200 liters per hour per sq. m of filter area.	High, typically ranges 3000 to 6000 liters per hour per sq. m of filter area.

Which factors influence the rate of filtration Mcq?

The factors that affect the filtration are temperature, density, pressure, viscosity, particle size, particle shape, charge, and corrosiveness. 10.

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