Describe zinc’s role in the body? What are significant sources of zinc?

What will be an ideal response?


Zinc supports the work of thousands of proteins in the body, such as the metalloenzymes, which participate in a variety of metabolic processes, and transcription factors, which regulate gene expression. In addition, zinc stabilizes cell membranes and DNA, helping to strengthen antioxidant defenses against free-radical attacks. Zinc also assists in immune function and in growth and development. Zinc participates in the synthesis, storage, and release of the hormone insulin in the pancreas, although it does not appear to play a direct role in insulin’s action. Zinc interacts with platelets in blood clotting, affects thyroid hormone function, and influences behavior and learning performance. It is needed to produce the active form of vitamin A in visual pigments and the retinol-binding protein that transports vitamin A. It is essential to normal taste perception, wound healing, sperm production, and fetal development.
Zinc is highest in protein-rich foods, such as shellfish (especially oysters), meats, poultry, milk, and cheese. Legumes and whole-grain products are good sources, if eaten in large quantities. Vegetables vary in zinc content depending on the soil in which they are grown

Nutritional Science

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Answer the following questions true (T) or false (F)

1. Most Americans need to learn to use the scientific method to decipher nutrition misinformation. 2. To find out about a patient's eating habits, a registered dietitian nutrition would consult "What We Eat In America". 3. The Nutrition Facts panel must list the serving size of the food and the corresponding amount of kilocalories, fat, saturated fat, trans fat, cholesterol, sodium, sugars, added sugars, dietary fiber, protein, vitamin D, calcium, iron, and potassium.

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What is the average daily sodium intake in the U.S.?

a. 3400 mg b. 2600 mg c. 4200 mg d. 3000 mg e. 3800 mg

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Which of the following lipoproteins contains the highest percentage of cholesterol?

A. VLDL B. LDL C. Chylomicron D. HDL

Nutritional Science