what do the terms hydrophilic and hydrophobic mean and how do they relate to the structure of a cell membrane

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GrimReaper2003 GrimReaper2003

22-10-2018
Health

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what do the terms hydrophilic and hydrophobic mean and how do they relate to the structure of a cell membrane

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AdiposeWarrior AdiposeWarrior · Answer 1 · 2018-10-22T21:49:41+02:00

Hydrophilic:

Molecules forming ionic or hydrogen bonds with the water molecule. (Attracted to water)

Hydrophobic:

Nonpolar molecules that repel the water molecules. (Repelled by water)

How these relate to the structure of a cell membrane:

Hydrophilic and Hydrophobic are components of Phospholipids. Phospholipids are one of the principal components of the plasma membrane.

adioabiola adioabiola · Answer 2 · 2021-10-29T20:28:09+02:00

The terms Hydrophilic and Hydrophobic are exact opposites of one another as Hydrophilic means water-attraction while Hydrophobic means water-repulsion.

The plasma membrane is made up of phospholipids. These Phospholipids have two portions namely: The polar hydrophilic portion and the Non-polar Hydrophobic portion.

These Phospholipids which make up the plasma membrane are made up of of a glycerol molecule, two fatty acids, and a phosphate group which is modified by an alcohol.

The phosphate group is categorically the negatively-charged polar head, which is hydrophilic. On the other hand, the fatty acid chains are the uncharged, nonpolar tails, which are hydrophobic.