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What compound is this?
Carbohydrates
Lipids
Nucleic acids
Proteins ​​

What compound is this? Carbohydrates Lipids Nucleic acids Proteins ​​-example-1

2 Answers

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Those are the four major classes of biological macromolecules.
User Ellisa
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Answer:

Its protein; because none of the macromolecules have an 'r group'.

User Dudebrobro
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