From the following, only one amino acid has two identical groups attached to its central atom. Which amino acid out of the following matches the description given above.
Correct answer: C. Glycine
- A. Valine
- B. Alanine
- C. Glycine
- D. Cysteine
Explanation
Glycine is the simplest amino acid and the only one without a chiral center. It has a hydrogen atom as its side chain, meaning it has two identical groups (hydrogen atoms) attached to its central carbon atom.
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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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