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The four main classed of macromolecules are Proteins, Sugars, Lipids and nucleic acids.

Carbon is an element found in all classes. In protein it part of at least the carboxylic acid of the amino acid and the ever present alpha carbon. In Sugars carbon always form the backbone and the same in lipids. In nucleic acid carbons are found in the sugar moiety as well as the nitrogen base.

Hydrogen is also always present - quite trivial.

Oxygen is also trivial for all.

Nitrogen is found in all proteins, all nucleic acids some sugar derivatives and very seldomly in lipid.

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āˆ™ 16y ago
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āˆ™ 8y ago

Three elements are common to both.They are C, H and O

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Q: What 3 elements are found in all four classes of macromolecules?
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