Moderate

The amino acids which largely exist in dipolar ionic form are:

Correct answer: D. Alpha amino acids

  • A. Acidic amino acids
  • B. Basic amino acids
  • C. Beta amino acids
  • D. Alpha amino acids

Explanation

α-amino acids exist as dipolar ions or zwitter ions.

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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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