Q41
Infection of Ascaris usually occurs by:
Correct Answer
Option D
Solution
(d) Ascariasis is caused by ingesting water or food contaminated with eggs of Ascaris.
Human Health and Disease
Q42
Asthma may be attributed to
Correct Answer
Option B
Solution
(b) Mast cells secrete histamine, prostaglandin D2 and leukotriene C4 causing bronchoconstriction in asthma.
Q43
The infectious stage of Plasmodium that enters the human body is
Correct Answer
Option A
Solution
(a) Plasmodium enters the human body as sporozoites through the bite of infected female Anopheles mosquito.
Q44
Which of the following viruses is not transferred through semen of an infected male?
Correct Answer
Option B
Solution
(b) Chikungunya virus is transmitted by Aedes mosquito bite, not through semen.
Q45
HIV that causes AIDS first starts destroying:
Correct Answer
Option B
Solution
(b) HIV starts to destroy helper T-lymphocytes (CD4+), causing progressive immune deficiency.
Q46
The use of Cannabis products causes
Correct Answer
Option B
Solution
(b) Cannabis (bhang, ganja, charas) products are hallucinogens that alter thoughts, perceptions and feelings.
Q47
Which one of the following is an opiate narcotic?
Correct Answer
Option B
Solution
(b) Opiate narcotics like morphine suppress brain activity and relieve pain.
Q48
LSD is
Correct Answer
Option A
Solution
(a) LSD is the most powerful hallucinogen, extracted from ergot fungus Claviceps purpurea.
Q49
Which one of the following is a correct match?
Correct Answer
Option A
Solution
(a) Reserpine (from Rauwolfia) is a tranquilizer; morphine is an opiate narcotic; bhang is a hallucinogen.
Q50
Which one of the following depresses brain activity and produces feelings of calmness, relaxation and drowsiness?
Correct Answer
Option B
Solution
(b) Valium is a tranquilizer that depresses brain activity and produces calmness and drowsiness.
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