Which of the following is NOT a fatty acid?
Correct answer: A. Phenyl acetic acid
- A. Phenyl acetic acid
- B. Stearic acid
- C. Palmitic acid
- D. Oleic acid
Explanation
Fatty acids are a group of heterogeneous compounds that consist of a long aliphatic alkyl chain which may be saturated or unsaturated and a terminal carboxylic acid functional group.Phenyl acetic acid consists of an aromatic benzene ring bonded with the carboxylic acid group. Therefore, it does not qualify to be categorised as a fatty acid. Hence option A is correct.Option B,C and D are all examples of fatty acids and their structures conform to the definition of fatty acids as shown:
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Proteins are classified by shape, composition and structure, from primary amino acid sequence to secondary, tertiary and quaternary organisation, and their biological roles are linked to this structure. Enzymes are examined as protein biocatalysts, including active sites, substrate specificity, activation energy, cofactors and factors affecting activity.
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