c) a nitrogen atom and a hydrogen atom, each of which is already bonded to an ox

Question

c) a nitrogen atom and a hydrogen atom, each of which is already bonded to an oxygen 5. All macromolecules contain both polar and non-polar covalent bonds, though the percentage of each varies, and this in turn contributes to the function of a molecule. The table below should help you to organize your knowledge about the location of these bonds in macromolecules. Estercovalent glycridice covalent Macromolecule If present, where If present, where Is the polymer are polar covalent are non-polar bonds located?covalent bondshydrophobic, or hydrophilic, located? amphipathic? Nucleic acids Polysaccharides Triglycerides Phospholipids amphipathic

Explanation / Answer

nucleic acids: Polar b/w sugar and phosphate and non-polar b/w sugar and base. they are hydrophilic.
polysaccharides: polar bond: Glycosidic linkage – a covalent bond between monosaccharides.
polysaccharides have polar groups/electronegative atoms, the polymeric nature of polysaccharides excludes water so they are hydrophobic.
triglycerides: It has covalent bonding. Ester linkage – bond between the hydroxyl group on a glycerol molecule and the carboxyl group on a fatty acid (results in the formation of an ester functional group)Hydrophobic – do not dissolve in water
Phospholipids: The proteins and lipid molecules are held together by noncovalent interactions such as Van der Waals forces (which holds the hydrophobic tails together) and hydrogen bonding (which binds the hydrophilic heads with water), which help to stabilize the lipid bilayer structure.They are formed in sheet-like structures that contain both a hydrophilic and a hydrophobic moiety.

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