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Despite the great diversity of molecules on earth, there are four classes of large molecules found in living matter. However, on a molecular basis, only three of them are classified as macromolecules.

Identify the three organic molecules that form polymers and therefore classified as macromolecules.


Carbohydrates, proteins and nucleic acids.


Carbohydrates, lipids and proteins.


Carbohydrates, lipids and nucleic acids.


Lipids, proteins and nucleic acids.

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