Delayed wound healing is caused by deficiency of:
Correct answer: A. Zinc (Zn)
- A. Zinc (Zn)
- B. Iron (Fe)
- C. Cobalt (Co)
- D. Manganese (Mn)
Explanation
Zinc (Zn) deficiency is directly linked to delayed wound healing because zinc is integral to the processes of collagen synthesis and cell proliferation, which are crucial for repairing and closing wounds. Without sufficient zinc, these critical processes are disrupted, resulting in impaired healing.Iron (Fe) deficiency primarily causes anemia due to its role in hemoglobin formation, affecting overall oxygen transport but not specifically wound healing. Cobalt (Co) is essential for vitamin B12 function, influencing blood and nerve health, but it does not directly impact the healing process of wounds. Manganese (Mn) supports enzymatic activities and bone health, and while it plays a role in tissue repair, its deficiency is not a common cause of delayed wound healing.
This question appeared on the ETEA MDCAT 2016 paper, which you can sit online with every answer explained.
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About Plant Nutrition and Transport
Plants require macronutrients and micronutrients for growth, and mineral deficiencies produce recognizable symptoms. Transport involves water and minerals through xylem by transpiration pull, cohesion and adhesion, while phloem translocates sugars from sources to sinks. Root pressure and transpiration are distinct mechanisms.
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