Choose the iodine-containing hormone:
Correct answer: C. Tetraiodothyronine
- A. Progesterone
- B. Testosterone
- C. Tetraiodothyronine
- D. Estrogen
Explanation
Tetraiodothyronine (T4) and triiodothyronine (T3) are hormones produced by the thyroid gland. Their molecular structures incorporate iodine atoms, which are essential for their proper function in regulating metabolism.
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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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