Same chapter3 marksDifficulty: Medium
Distinguish between benign and malignant tumours.
Human Health and Disease
3 marksDifficulty: Medium
Distinguish between active and passive drugs of abuse and name two classes with their effects.
Original Khojo Papers practice question — not from a past board paper.
Answer
Opioids such as heroin bind receptors in the central nervous system and act as depressants, slowing body functions. Cannabinoids from Cannabis affect the cardiovascular system, and coca alkaloids such as cocaine interfere with the transport of dopamine and act as stimulants, producing euphoria followed by depression.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
All of them cause dependence, tolerance and withdrawal on stopping.
Related questions
From the same topic and chapter, at a similar level.
Same chapter3 marksDifficulty: Medium
Name the two kinds of lymphocyte and state the role of each in the immune response.
Human Health and Disease
Same chapter3 marksDifficulty: Medium
Distinguish between innate and acquired immunity, and between active and passive immunity.
Human Health and Disease
Same chapter3 marksDifficulty: Medium
Name the causative agent, the mode of transmission and one symptom of malaria, typhoid and AIDS.
Human Health and Disease
Same subject3 marksDifficulty: Medium
Describe the structure and functions of the placenta.
Human Reproduction
Same subject3 marksDifficulty: Medium
Define apomixis and parthenocarpy, and state the practical use of each.
Sexual Reproduction in Flowering Plants