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Why non polar molecules diffuse more rapidly through membranes than polar molecules?
Wiki User
∙ 9y ago
The implication of non-polar molecules diffusing more rapidly than polar molecules to the transport of substances through the plasma membrane is quite significant. Concentrate gradients are established which facilitate the transport of vital molecules.
Wiki User
∙ 10y ago
Wiki User
∙ 9y agoPolar molecules behave as though they have a positive charge at one end and a negative charge at the other. This will only happen if the polar molecule is not totally symmetric.
Wiki User
∙ 11y agoNon-polar molecules do not have any charges so they will move through the lipid bilayer faster than the polar molecules with charges.
Wiki User
∙ 12y agoLipid molecules are nonpolar.
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Why does NaCl not require a transport protein for diffusion?
It does require a transport protein as it disassociates into charged ions and it is not lipid soluble. Only lipid soluble molecules diffuse freely through living membranes.
What membrane do pyruvic acid molecules pass through?
the inner/outer membranes of mitochondria
Why is perfume an example of diffusion?
The molecules of the perfume have to diffuse through the air in order to reach and be detected by the nose of an observer.
What direction do molecules of osmosis move?
Osmosis is not a molecule. It is the flow of water through cell membranes from areas of high concentration to areas of low concentration.
Why are membrane more permeable to non-polar molecules than to most polar and ionized molecules?
Because the permeation through a membrane depends on the diffusivity (size of the permeate molecules) and the solubility (briefly the interaction equilibrium) of the permeate in the membrane. Considering permeate mixtures, membranes can be size-selective and sorption-selective depending on which relative term (ratio of diffusivities or ratio of solubilities) dominates. Most known membrane separation processes involve size-selectivity, i.e., the "smaller" the permeate molecule, the faster it gets through the membrane. More sophisticated membrane separation processes are sorption selective, where it is possible that the "bigger" molecules exhibit a higher permeation flux than the "smaller" ones.
Why don't starch molecules pass through partially permeable membranes?
Albumin and starch molecules are too big to diffuse across cell membranes. They will not be able to diffuse from the intestine into the blood and from blood into the cells.
Can all molecules diffuse through all cell membranes?
No, there are specific cell membranes that allow only certain molecules to pass through. Some stay open and others must be opened ( like a gate ).
What types of molecules diffuse through the cell membranes by facilitated diffusion?
molecules that can survive the hydrophobic interior of the lipid bilayer
Why do sugar molecules not diffuse through a plant cell membrane?
The membrane is semi-permeable. Sugar molecules are too large to diffuse through.
What is it called when sugar passes through an animal cell?
glucose (sugar) can diffuse through cell membranes
What occurs when water molecules diffuse through a membrane?
osmosis
Occurs when water molecules diffuse through a membrane?
Osmosis
Why does NaCl not require a transport protein for diffusion?
It does require a transport protein as it disassociates into charged ions and it is not lipid soluble. Only lipid soluble molecules diffuse freely through living membranes.
What particles can diffuse directly through the lipid bi-layer?
As the bilayer contains hydrophobic fatty acid tails, water-soluble molecules cannot diffuse directly through. However, lipid soluble molecules such as oxygen can diffuse directly through. Overall, for a molecule to be able to diffuse directly through it must be lipid-soluble, relatively small and non-polar.
Molecules diffuse from capillaries to body cells by moving through the?
veins
How do you'r body's cells get the things they need to survive?
Every cell in the body has access to essential nutrients through the circulatory system. Molecules in the blood diffuse out of capillaries where their concentration is high, into surrounding tissue fluid where they are required. For small molecules, such as water and gasses, this is allowed by tiny holes in the membranes just big enough for them to pass through. Larger molecules such as glycogen and proteins must be drawn into cells by a process called active transport, where gates embedded in the cell membranes are use ATP to pull desired molecules into the cell.
How can polar molecules pass through cell membranes?
Through facilitated diffusion
