Indicate the cyclic amino acid from the following
Correct answer: D. Proline
- A. Cysteine
- B. Serine
- C. Haloamine
- D. Proline
Explanation
Haloamine is not an amino acid but is rather a class of organic compounds containing an amine and halogen group. The structures of Cysteine, serine, and proline are shown below. Only Proline contains a ring in its structure and hence is cyclic.
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About Macromolecules
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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