everyday science MCQ #6275

The most important stimulant in tea leaves is:

everyday science MCQ #6275

  1. Question 1

    Q1. The most important stimulant in tea leaves is:

    • A) Caffeine
    • B) Brucine
    • C) Phenylalanine
    • D) Theine

    Answer: Caffeine

    Explanation: Caffeine is the primary psychoactive alkaloid in tea and coffee; it acts as a central nervous system stimulant by blocking adenosine receptors, reducing drowsiness.