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The main active constituent of tea and coffee is _______.
1. Aspirin
2. Nicotine
3. Chlorophyll
4. Caffeine

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Correct Answer - Option 4 : Caffeine

The correct answer is Caffeine.

  • Caffeine is defined as a drug because it stimulates the central nervous system, causing increased alertness.
    • Caffeine gives most people a temporary energy boost and elevates mood.
    • Caffeine is in tea, coffee, chocolate, many soft drinks, and pain relievers, and other over-the-counter medications.
  • Caffeine acts as a central nervous system stimulant.
    • When it reaches your brain, the most noticeable effect is alertness.
    • You'll feel more awake and less tired, so it's a common ingredient in medications to treat or manage drowsiness, headaches, and migraines.
    • Caffeine is an alkaloid occurring naturally in some 60 plant species, of which cocoa beans, kola nuts, tea leaves, and coffee beans are the most well-known.
    • Other natural sources of caffeine include yerba maté, guarana berries, guayusa, and the yaupon holly.
    • Caffeine is a stimulant drug, which means it speeds up the messages traveling between the brain and the body.
    • It's found in the seeds, nuts, and leaves of a number of different plants, including Coffea Arabica (used for coffee) Thea Sinensis (used for tea).

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