Alanine, lysine and tryptophan are:
Correct answer: D. Amino acids
- A. Carbohydrates
- B. Lipids
- C. Enzymes
- D. Amino acids
Explanation
Alanine, lysine, and tryptophan are all building blocks of proteins. Each is a distinct amino acid with its own structure and properties. They are not carbohydrates, lipids, or enzymes.
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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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