Multiple choice

A Spanish research team found that a natural enzyme ____ in the human body can prevent the body cells from ageing.

  1. telomerase

  2. ptyalin

  3. co-enzyme 23

  4. interferon 90
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A Correct answer
Explanation

Telomerase is an enzyme that maintains telomeres (protective caps at the ends of chromosomes), which are associated with cellular aging. Spanish researchers discovered this enzyme's role in preventing cellular aging by maintaining telomere length. Ptyalin is a digestive enzyme, co-enzyme 23 is not a standard enzyme, and interferon 90 relates to immune response rather than aging.

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