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Carbon is an essential constituent of all living matter such asA. fatsB. carbohydratesC. proteinsD. all of these

Answer» Correct Answer - D
Fats and oils are simple lipids consisting of mixtures of various glycerides of fatty acids, which occur in plants an animals and serve as storage materials. Carbohydrates are a large group of organic compounds composed of `C, H` and `O` only, usually with the general formula `C_(X)(H_(2)O)_(Y)`. Protein molecules consist of hundreds of thousands of amino acids jointed together by the peptide linkage.


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