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What factors affect the permeability of lipid bi layers and why?
The factors that affect the permeability of lipid bilayers include the presence of cholesterol, the length and saturation of fatty acid chains, and the temperature of the environment. Cholesterol can decrease permeability by packing the lipids more tightly. Fatty acids with longer, more saturated chains decrease permeability, while shorter, unsaturated chains increase permeability. Higher temperatures can also increase permeability by fluidizing the membrane.
What is the ability of a cell membrane to allow material to pass through it called?
permeability
How does particle size affect permeability and porosity and capillarity in aquifers?
Percolation is the amount of water that enters soil during a given timeframe. Different soil types have different rates and the size of the particle affect how quickly the water will penetrate the water.
Does atrophy refer to the loss of permeability?
No, atrophy does not refer to the loss of permeability. Atrophy is the process of wasting away or reduction in size of an organ or tissue due to a decrease in cell size or number, often due to lack of use, inadequate nutrition, or disease. Loss of permeability, on the other hand, typically relates to changes in the ability of membranes to allow substances to pass through, which is a different biological concept.
What would increase or decrease net filtration pressure?
An increase in blood pressure, blood volume, or permeability of the filtration barrier would increase net filtration pressure. On the other hand, a decrease in blood pressure, blood volume, or an increase in plasma protein concentration would decrease net filtration pressure.
What factors affect the permeability of lipid bi layers and why?
The factors that affect the permeability of lipid bilayers include the presence of cholesterol, the length and saturation of fatty acid chains, and the temperature of the environment. Cholesterol can decrease permeability by packing the lipids more tightly. Fatty acids with longer, more saturated chains decrease permeability, while shorter, unsaturated chains increase permeability. Higher temperatures can also increase permeability by fluidizing the membrane.
Drugs that decrease membrane permeability to sodium are used as what?
Drugs that decrease membrane permeability to sodium are used as local anesthetics. These drugs block the sodium channels and prevent NA+ from entering the cell. NA+ influx is important to dipolarize the membrane.
Which is true of drugs that decrease membrane permeability to sodium ions?
It would decrease the probability of generating a nerve impulse. When a neuron is activiated by a threshold stimulus, the membrane briefly becomes more permeable to sodium. If the permeability is decreased, it will be more difficult for the sodium ions to rush into the cell.
Would a substance that decreases membrane permeability to sodium increase or decrease the generating of a nerve impulse?
A substance that decreases membrane permeability to sodium would decrease the generation of a nerve impulse. This is because sodium ions play a crucial role in depolarizing the membrane and initiating nerve impulses. By reducing sodium influx into the cell, the ability of the neuron to generate an action potential would be diminished.
What cause a decrease in the permeability of capillary walls?
A decrease in the permeability of capillary walls can be caused by various factors, including inflammation, which can lead to the release of substances that alter the structural integrity of endothelial cells. Additionally, changes in blood flow dynamics, such as increased shear stress, can affect the tight junctions between endothelial cells. Other factors, such as certain medications or pathological conditions like diabetes, can also contribute to a reduction in capillary permeability.
What would a substance that decreases membrane premeability to sodium increase or decrease the probability of generating a nerve impulse?
A substance that decreases membrane permeability to sodium would decrease the probability of generating a nerve impulse. This is because sodium ions play a critical role in the depolarization phase of an action potential by entering the cell, so if their permeability is reduced, it hinders the ability to reach the threshold for generating an impulse.
What is the ability of a cell membrane to allow material to pass through it called?
permeability
Is it possible that a man height can decrease?
not possibleheight is based on bones how can a bone of your body can decrease?if you chop your legs then it is possible.
Which of following would decrease the magnetic field around a wire?
Inserting a material with a high magnetic permeability around the wire or reducing the current flowing through the wire would decrease the magnetic field around the wire.
How does particle size affect permeability and porosity and capillarity in aquifers?
Percolation is the amount of water that enters soil during a given timeframe. Different soil types have different rates and the size of the particle affect how quickly the water will penetrate the water.
What feature of a membrane describes whether molecules can cross the membrane?
permeabiity
How can man increase porosity and permeability in oil wells?
There is not feasible way to change the overall porosity and permeability in an oil field. However, it is possible in many cases to improve the porosity and permeability within the near wellbore region, where the change in pressure is the greatest. Injecting acid into a well, may slightlyincrease the porosity but sigmificantly improve the permeability, as it creates larger flow paths (also called worm holes) through the formation. Hydraulic fracturing will also stimulate a well, although the formation's permeability and porosity is unchanges. It makes it easier for oil to flow into the well, so its effect in the long run, is the same as if the near well bore region had higher permeability. Low permeability formations often produced by horizontal wells, which is similar to hydraulic fracturing- it is easier for the oil to flow to the well.
