12th Class Biology Sample Paper Biology - Sample Paper-6

  • question_answer
    (i) Write the name of plant source of the drug popularly called as cocaine.
    (ii) How do moderate and high dosage of cocaine affect the human body?
    (iii) Cocain interferes with the transport of which neurotransmitter?

    Answer:

    (i) Cocaine is obtained from cocoa plant, Erythroxylum coca.                                                          
    (ii) Moderate dose of cocaine has a stimulating action on the central nervous system. It produces a sense of euphoria and increased energy.
    High dosage of cocaine causes headache, insomnia, hallucinations and death due to cardiovascular or respiratory failure.
    (iii) Cocain interferes with the transport of dopamine neurotransmitter.


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