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Human Health and Disease · Question 65

AIPMT 2011 (Prelims)MCQEasy📈 Topic in 50% papers+4−1
1

Where will you look for the sporozoites of the malarial parasite ?

  1. red blood corpuscles of humans suffering from malaria
  2. spleen of infected humans
  3. Salivary glands of freshly moulted female Anopheles mosquito
  4. Saliva of infected female Anopheles mosquito

Answer

(4) Saliva of infected female Anopheles mosquito

Solution

As per NCERT, in the life cycle of Plasmodium, sporozoites are formed in the stomach wall of the mosquito and are stored in its salivary glands.

⇒ When an infected female Anopheles bites a human, the sporozoites are injected with its saliva (the infectious form).

(1), (2) In humans the parasite is present as merozoites / gametocytes in RBCs and liver, not as sporozoites.

(3) A freshly moulted mosquito has not yet taken an infected blood meal, so it carries no sporozoites.

∴ Sporozoites are found in the saliva of an infected female Anopheles mosquito.

Answer: (4)

AIPMT 2011 (Prelims)

Keep practising — Human Health and Disease

2

Which one of the following acts as a physiological barrier to the entry of microorganisms in human body?

  1. Epithelium of urogenital tract
  2. Tears
  3. Monocytes
  4. Skin
AIPMT 2011 (Prelims)
3

A certain patient is suspected to be suffering from Acquired Immuno Deficiency Syndrome. Which diagnostic technique will you recommend for its detection?

  1. ELISA
  2. MRI
  3. Ultra sound
  4. WIDAL
AIPMT 2011 (Prelims)
4

At which stage of HIV infection does one usually show symptoms of AIDS?

  1. When the infecting retrovirus enters host cells
  2. When viral DNA is produced by reverse transcriptase
  3. When HIV replicates rapidly in helper T-lymphocytes and damages large number of these
  4. Within 15 days of sexual contact with an infected person
AIPMT 2011 (Prelims)
5

Which one of the following techniques is safest for the detection of cancers?

  1. Computed tomography (CT)
  2. Magnetic resonance imaging (MRI)
  3. Histopathological studies
  4. Radiography (X-ray)
AIPMT 2010 (Mains)
6

A person suffering from a disease caused by Plasmodium, experiences recurring chill and fever at the time when

  1. the parasite after its rapid multiplication inside RBCs ruptures them, releasing the stage to enter fresh RBCs.
  2. the trophozoites reach maximum growth and give out certain toxins
  3. the sporozoites released from RBCs are being rapidly killed and broken down inside spleen
  4. the microgametocytes and megagametocytes are being destroyed by the WBCs.
AIPMT 2010 (Mains)
7

Ringworm in humans is caused by :

  1. Fungi
  2. Viruses
  3. Bacteria
  4. Nematodes
AIPMT 2010 (Prelims)
8

Widal test is used for the diagnosis of –

  1. Tuberculosis
  2. Malaria
  3. Typhoid
  4. Pneumonia
AIPMT 2010 (Prelims)
9

Which one of the following statements is correct with respect to AIDS ?

  1. The causative HIV retrovirus enters helper T-lymphocytes thus reducing their numbers
  2. AIDS patients are being fully cured cent per cent with proper care and nutrition
  3. The HIV can be transmitted through eating food together with an infected person
  4. Drug addicts are least susceptible to HIV infection
AIPMT 2010 (Prelims)
10

Select the correct statement from the ones given below :

  1. Cocaine is given to patients after surgery as it stimulates recovery
  2. Chewing tobacco lowers blood pressure and heart rate
  3. Barbiturates when given to criminals make them tell the truth
  4. Morphine is often given to persons who have undergone surgery as a pain killer
AIPMT 2010 (Prelims)
11

Which one of the following statements is correct?

  1. Patients who have undergone surgery are given cannabinoids to relieve pain
  2. Heroin accelerates body functions
  3. Malignant tumours may exhibit metastasis
  4. Benign tumours show the property of metastasis
AIPMT 2009

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