The total number of classes of organic compounds in human body is:
Correct answer: A. 4
- A. 4
- B. 5
- C. 3
- D. 6
Explanation
Living organisms are primarily composed of four major classes of large biological macromolecules, which are all organic compounds: carbohydrates, lipids, proteins, and nucleic acids.
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About Classification of Organic Compounds
Organic compounds are classified by carbon skeleton into open-chain, branched-chain and cyclic compounds, including homocyclic and heterocyclic types. The classification also uses functional groups to distinguish hydrocarbons, halo compounds, alcohols, aldehydes, ketones, carboxylic acids and their derivatives, which is different from naming compounds by IUPAC rules.
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