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Human Health and Disease · Question 81

AIPMT 2006MCQEasy📈 Topic in 12% papers+4−1
1

HIV that causes AIDS, first starts destroying

  1. Helper T-lymphocytes
  2. B-lymphocytes
  3. Leucocytes
  4. Thrombocytes

Answer

(1) Helper T-lymphocytes

Solution

As per NCERT, after getting into the body, HIV enters macrophages, where its RNA genome is copied into viral DNA by reverse transcriptase; macrophages then act as an HIV factory.

⇒ At the same time, HIV enters helper T-lymphocytes (TH), replicates and produces progeny viruses.

⇒ The progeny viruses attack other helper T-lymphocytes, so their number decreases progressively.

∴ Among the given cells, HIV first destroys helper T-lymphocytes.

Answer: (1)

AIPMT 2006

Keep practising — Human Health and Disease

2

A person showing unpredictable moods, outbursts of emotion, quarrelsome behaviour and conflicts with others is suffering from-

  1. Mood disorders
  2. Addictive disorders
  3. Schizophrenia
  4. Borderline Personality Disorder (BPD)
AIPMT 2006
3

Antibodies in our body are complex-

  1. Prostaglandins
  2. Steroids
  3. Glycoproteins
  4. Lipoproteins
AIPMT 2006
4

Which one of the following depresses brain activity and produces feelings of calmness, relaxation and drowsiness ?

  1. Hashish
  2. Amphetamines
  3. Morphine
  4. Valium
AIPMT 2005
5

Damage to thymus in a child may lead to

  1. A reduction in stem cell production
  2. Loss of cell mediated immunity
  3. A reduction in haemoglobin content of blood
  4. Loss of antibody mediated immunity
AIPMT 2005
6

Which one of the following is not correctly matched ?

  1. Anopheles culicifacies – Leishmaniasis
  2. Glossina palpalis – Sleeping sickness
  3. Culex pipiens – Filariasis
  4. Aedes aegypti – Yellow fever
AIPMT 2004
7

Carcinoma refers to :-

  1. Malignant tumours of the colon
  2. Benign tumours of the connective tissue
  3. Malignant tumours of the connective tissue
  4. Malignant tumours of the skin or mucous membrane
AIPMT 2003
8

Short-lived immunity acquired from mother to foetus across placenta or through mother's milk to the infant is categorised as :-

  1. Passive immunity
  2. Cellular immunity
  3. Innate non-specific immunity
  4. Active immunity
AIPMT 2003
9

Cancerous cells can easily be destroyed by radiations due to : -

  1. Fast mutation
  2. Lack of oxygen
  3. Rapid cell division
  4. Lack of nutrition
AIPMT 2002
10

Which one of the following is correct match ?

  1. Bhang – Analgesic
  2. Cocaine – opiatic narcotic
  3. Morphine – Hallucinogenic
  4. Reserpine – Tranquilliser
AIPMT 2001
11

L.S.D. is : -

  1. Stimulant
  2. Tranquilliser
  3. Hallucinogenic
  4. Sedative
AIPMT 2001

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