Which mineral is linked to tissue formation and keratin strength?

Which mineral is linked to tissue formation and keratin strength?

• A. Sodium
• B. Sulphur
• C. Manganese
• D. Iodine

Answer: (B)

This question tests how minerals contribute to tissue formation and the strength of keratin. Sulfur is the key mineral here because it becomes part of the amino acids cysteine and methionine, with cysteine in particular building keratin's structure. Keratin-rich tissues like hair, nails, and the outer skin rely on disulfide bonds formed between cysteine residues to create strong, resilient strands. Those sulfur-containing bonds give keratin its toughness and integrity, supporting overall tissue strength. Sodium mainly regulates fluid balance and nerve/muscle function, not the cross-linking of keratin. Iodine is essential for thyroid hormone production, which influences metabolism but not the direct formation of keratin. Manganese serves as a cofactor for various enzymes, including some involved in connective tissues, but it isn’t the primary driver of keratin strength. So sulfur’s role in forming disulfide bonds within keratin makes it the mineral most closely linked to tissue formation and keratin strength.

This question tests how minerals contribute to tissue formation and the strength of keratin. Sulfur is the key mineral here because it becomes part of the amino acids cysteine and methionine, with cysteine in particular building keratin's structure. Keratin-rich tissues like hair, nails, and the outer skin rely on disulfide bonds formed between cysteine residues to create strong, resilient strands. Those sulfur-containing bonds give keratin its toughness and integrity, supporting overall tissue strength.

Sodium mainly regulates fluid balance and nerve/muscle function, not the cross-linking of keratin. Iodine is essential for thyroid hormone production, which influences metabolism but not the direct formation of keratin. Manganese serves as a cofactor for various enzymes, including some involved in connective tissues, but it isn’t the primary driver of keratin strength. So sulfur’s role in forming disulfide bonds within keratin makes it the mineral most closely linked to tissue formation and keratin strength.