Describe the structure of a phospholipid.

The phospholipids comprise two alcohols, a phosphate group, and one or two fatty acids. On one terminal of the molecule, one alcohol and the phosphate group is present, and this terminal is considered as polar, that is, exhibiting an electric charge and is fascinated towards the molecules of water. While the other terminal comprises fatty acids, it is neutral and is hydrophobic, water-insoluble.  

Thus, phospholipid possesses amphipathic nature, which makes them an essential component of the membrane, as they produce a two-layer composition known as the lipid bilayer.  

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answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.