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The polarity of membrane phospholipids

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The polarity of membrane phospholipids

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Cellular repiration

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Q: Which of the following factors does not affect membrane permeability?
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What factors affect membrane fluidity?

cholesterol levels, degree of saturation of fatty acids, temperature


explain why hormones in the bloodstream are able only to affect target cells/organs and not other cells/organs?

Hormones in the bloodstream are able to affect target cells/organs and not other cells/organs because of selective permeability. This means that hormones are only able to pass through the cell membrane of certain cells and organs, and not through the cell membrane of other cells and organs. The cell membrane of the target cells and organs are specialized to allow the hormones to pass through, while the cell membrane of other cells and organs are not specialized and are therefore impermeable to the hormones. This is due to the presence of receptor proteins on the cell membrane of the target cells and organs. These receptor proteins can bind to the hormones and facilitate their entry into the cell. Since these receptor proteins are not present on the cell membrane of other cells and organs, the hormones are unable to bind to them and therefore unable to cross the cell membrane. In addition, hormones can be broken down by enzymes in the bloodstream, which means they can’t reach their target cells and organs if they are exposed to the enzymes. This further ensures that hormones only affect the target cells and organs, and not other cells and organs. In summary, hormones in the bloodstream are able to affect target cells and organs and not other cells and organs because of selective permeability and the presence of receptor proteins on the cell membrane of the target cells and organs. Other cells and organs do not have these specialized receptor proteins and therefore cannot be affected by the hormones.


What are two abiotic factors that affect water lilies?

what are two abiotic factors that affect water lilies


Which of the following statements about a typical plasma membrane is correct?

The Correct Answer: The sides of the plasma membrane that face the cytoplasm and the outside of the cell have different lipid and protein composition.


What factors determines the osmosis of a cell?

There are a many factors which affect the rate of osmosis. One of the factors is the temperature of the solution and solvent. Temperature affects osmosis because when temperature goes higher, molecules move faster. So, osmosis will increase. If the temperature is decreased, the rate of osmosis will decrease too. Another factor which affects osmosis is the size of the particles. The size of the particles affect osmosis because osmosis is the movement of a solvent through a membrane and membrane's pores, or empty spaces, are different sizes. Only certain particles can fit through any given membrane. The concentration gradient can also affect osmosis because osmosis is a transport process therefore it can only go with the concentration gradient. The lower the concentration of the solute within a solvent, the faster that osmosis will occur into that solvent. The light and dark also affects osmosis because the greater the light, the faster osmosis occurs. The PH affects osmosis as well. The greater the pH of a solution, the more acidic or concentrated it becomes. The greater the concentration gradient of a substance on either side of a membrane the faster osmosis occurs.

Related questions

Name the factors that may affect osmosis?

There are at least 2 main factors that may affect osmosis. These 2 factors are amount of water and membrane permeability.


Does increasing membrane permeability affect the time it takes for the osmometer to reach equilibrium?

It should. The permeability of a membrane defines how fast substances move across a membrane from a high concentration environment to the lower concentration environment. The more permeable the membrane the sooner equilibrium is reached when the concentrations on both side are the same.


What does permeability depend on?

Permeability depends on membrane solubility and the presence of specific integral transport proteins. Other factors such as pressure, concentration, and temperature of the molecules or solutes on either side, as well as the size of the molecules can also affect permeability.


What factors affect the diffusion of water?

One of the factors that affect the diffusion of water through a membrane by osmosis is the permeability of the membrane. The amount of water on each side of the membrane may also have an effect on water's diffusion. Water will diffuse to the side with little water to even out the concentration.


What factors affecting the diffusion?

There several physical factors that affect the rate at which particles diffuse. These include: the size of the particle, the temperature, the concentration difference, the diffusion distance, the surface area, and permeability.


What characteristics or factors affect potential aquifers?

An aquifer is a body of permeable rock that can contain or transmit groundwater. Some factors that affect potential aquifers are permeability, thickness and hydraulic properties.


What factors affect membrane fluidity?

cholesterol levels, degree of saturation of fatty acids, temperature


How does Permeability affect on ground water?

It doesnt fool


Discuss how each what factors would affect the results of electrophoresis?

A person will not be able to discuss how the following factors would affect the results of electrophoresis unless they know what the following factors are. This information needs to be included for a person to know the correct answer.


Does the permeability to water affect the equilibrium flow in and flow out value?

no


How changes in the following might affect on business 1 technological factors2 social factors 3 environmental factors?

== ==


The length of a part being magnetized by passing an electric current from one end to the other affect 1 permeability 2 strength of magnetic field 3 not affect magnetic field?

Permeability