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zinc

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Secondary Information

Definition

Zinc is a chemical element with the symbol Zn and atomic number 30. It is a bluish-white, brittle metal that is the 24th most abundant element in the Earth's crust.

Zinc is an essential trace element for humans and animals. It is involved in a number of important bodily functions, including:

  • Immune function: Zinc helps to keep the immune system strong by supporting the production of white blood cells.
  • Wound healing: Zinc helps to heal wounds by promoting the growth of new tissue.
  • Growth and development: Zinc is essential for growth and development in children.
  • Metabolism: Zinc helps to metabolise carbohydrates, proteins, and fats.
  • Sense of taste: Zinc is essential for the sense of taste.

Zinc is also used in a variety of products, including batteries, coins, and sunscreen. It is also used in the production of medical devices, such as pacemakers and artificial joints.

How can the word be used?

The zinc in the alloy made it stronger.

zinc

Different forms of the word

Noun: zinc (plural: zincs).

  • a chemical element with the symbol Zn and atomic number 30.
  • a silvery-white metal.
  • a component of many alloys, such as brass and bronze.

Adjective: zinc.

  • made of zinc.

Verb: to zinc.

  • to coat with zinc.

Etymology

The word "zinc" comes from the German word "Zink", which is derived from the Latin word "zincum". The Latin word "zincum" is thought to be derived from the Persian word "tsink" or the Arabic word "zinjif".

The word "zinc" is first attested in English in the 16th century. It was originally used to refer to the metal itself, but it is now also used to refer to the element zinc.

Question

Where can zinc be found and what does it do?

AQA Science Exam Question and Answer

Question:

Explain the role of zinc in human nutrition and its significance for maintaining a healthy immune system. Discuss how zinc deficiency can impact the body's immune response and provide an example of dietary sources rich in zinc.

Answer:

Zinc is an essential mineral that plays a critical role in human nutrition, particularly in maintaining a robust immune system. It is involved in various immune processes, including the development and function of immune cells and the regulation of inflammatory responses.

Zinc deficiency can have a significant impact on immune function. A lack of zinc can lead to impaired immune responses, making the body more susceptible to infections and illnesses. Immune cells, such as white blood cells, require zinc to function optimally and mount effective defences against pathogens.

For example, zinc deficiency has been linked to an increased susceptibility to respiratory infections, like the common cold and pneumonia. Inadequate zinc levels can also delay wound healing and hinder the body's ability to recover from infections.

To ensure sufficient zinc intake, it is important to include zinc-rich foods in the diet. Dietary sources of zinc include lean meats, poultry, fish, dairy products, nuts, seeds, and whole grains. Additionally, fortified foods and dietary supplements can be helpful in meeting zinc requirements.