what is the difference between lipid-soluble and water-soluble substances?

Question

What is the function of each and example of each

Answer 1

Lipid soluble substances can enter a cell by dissolving in the lipid portion of the membrane and diffusing through it. The greater the lipid solubility, the more readily a molecule will pass through the membrane, i.e., the greater will be the flux for a given concentration difference

Water soluble, lipid-insoluble substances by definition cannot pass through membranes by dissolving in the lipids. How do they get through? There must be water-filled channels or pores spanning the membrane through which these substances may diffuse.


LIPIDS

Each lipid molecule has a polar head and two non-polar tails. The polarity in the head results from the molecular interaction between the oppositely charged phosphate and nitrogen groups. The resulting dipole makes this part of of the molecule polar and, therefore, water soluble. It is called the hydrophilic, or water-loving, portion of the lipid molecule. In contrast, the two tails of each lipid molecule are non-polar and water insoluble. They are composed of long-chain fatty acids which are hydrophobic, or water-hating, in nature. The tails are joined to a backbone molecule which, in turn, is attached to the polar head.

Because they each contain a hydrophilic and hydrophobic end, lipid molecules naturally form a bilayered membrane. The polar, water-soluble heads point toward the water on the inside and outside of the cell, while the non-polar, fatty-acid tails point away from water and toward the membrane interior. The resulting bilayer of lipid molecules contains an oily inner core, It functions as a selective barrier permeable to lipid-soluble substances and impermeable to polar, water-soluble substances.

Answer 2

Water Soluble Vs Fat Soluble

Answer 3

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RE:
what is the difference between lipid-soluble and water-soluble substances?
What is the function of each and example of each

Answer 4

Fat Soluble Definition

Answer 5

Lipid-soluble means that something will dissolve in lipids.
Generally, nonpolar molecules are lipid-soluble.

Water-soluble means that something will dissolve in water.
Generally, polar molecules dissolve in water.

You can find the rest in your textbook.

Answer 6

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Answer 7

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Therefore, you are not alone in this battle.