Based on function, thyroxine can be classified as:
Correct answer: A. Hormonal protein
- A. Hormonal protein
- B. Structural protein
- C. Transport protein
- D. Genetic protein
Explanation
Amino acid-derived hormones include thyroxine (produced by the thyroid gland) and melatonin (produced by the pineal gland). Thyroxine is the main hormone secreted into the bloodstream by the thyroid gland. It plays vital roles in digestion, heart and muscle function, brain development and maintenance of bones.
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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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