KCET 2014 Biology Solved Paper

Heroin (brown sugar, smack, diacetyl morphine), an opioid, is prepared from morphine. It is a semisynthetic opiate. Its potency is much higher than natural opiate. It slows down respiratory activity, causes constriction of pupil of eye, decreases glandular secretions, impairs the digestion, and produces nausea, vomiting and sterility.