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Parasitology and Immunology (GATE)

Description: GATE
Number of Questions: 15
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Tags: GATE Host-parasite Relation
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Which of the following diseases is caused by a bacterium that gives positive result in Gram stain test?

  1. Gonorrhea

  2. Glanders

  3. Filariasis

  4. Hand, foot and mouth disease

  5. Listeriosis


Correct Option: E
Explanation:

Listeriosis is caused by a Gram-positive bacteria Listeria monocytogenes.

Which of the following is not a viral disease?

  1. Ebola haemorrhagic fever

  2. Roseola

  3. Haemophilus influenzae

  4. Herpes simplex

  5. Hepatitis E


Correct Option: C
Explanation:

Haemophilus influenzae is caused by Gram-negative, coccobacillary, facultatively anaerobic pathogenic bacterium.

Which of the following diseases causes burning sensation during urination, pain during sexual intercourse and smelly vaginal discharge in humans?

  1. Trichinosis

  2. Trichomoniasis

  3. Trichuriasis

  4. Trachoma

  5. Toxocariasis


Correct Option: B
Explanation:

Trichomoniasis is caused by Trichomonas vaginalis. 

Which of the following diseases is caused by a virus that has a non-segmented single-stranded ribonucleic acid as its genetic material?

  1. Stomach flu

  2. Legionnaires

  3. Kuru

  4. Typhus

  5. Rotavirus infection


Correct Option: A
Explanation:

This option is correct because stomach flu is caused by Norwalk virus.

Which of the following diseases are transmitted sexually?

  1. Sporotrichosis and syphilis

  2. Trichomoniasis and syphilis

  3. Strongyloidiasis and trichomoniasis

  4. Shingles and sporotrichosis

  5. Strongyloidiasis and sporotrichosis


Correct Option: B
Explanation:

Trichomoniasis and syphilis are transmitted through sexual activity.

The causative agents of which of the following sets of diseases are carried by insects?

  1. African horse sickness, babesiosis and leishmaniasis

  2. African horse sickness, crimean fever and malaria

  3. Babesiosis, malaria and bubonic plague

  4. Leishmaniasis, caliciviridae and capillariasis

  5. Crimean fever, caliciviridae and bubonic plague


Correct Option: A
Explanation:

This option is correct because causative agents of all these diseases are carried by insects.

Which of the following causes black painless spot on palms and soles?

  1. Tinea nigra - Hortaea werneckii

  2. Tinea unguium - Trichophyton species

  3. Tinea pedis - Trichophyton species

  4. Tinea versicolor - Malassezia species

  5. Tinea cruris - Epidermophyton floccosum


Correct Option: A
Explanation:

Hortaea werneckii causes tinea nigra. Its symptoms appear on the palms and soles as a black painless spot.

Which of the following is incorrectly matched?

  1. Cat-scratch disease - Bartonella quintana

  2. Candidiasis - Candida albicans

  3. Buruli ulcer - Clostridium botulinum

  4. Chagas disease - Trypanosoma cruzi

  5. Chancroid - Haemophilus ducreyi


Correct Option: C
Explanation:

Buruli ulcer is caused by Mycobacterium ulcerans. Clostridium botulinum causes botulism.

Which of the following diseases is responsible for myonecrosis?

  1. Isosporiasis

  2. Keratitis

  3. Leprosy

  4. Gas gangrene

  5. Listeriosis


Correct Option: D
Explanation:

Gas gangrene produces gas in muscle tissue and causes myonecrosis.

Which of the following diseases is communicated through Klebsiella granulomatis and destroys the body tissues?

  1. Donovanosis

  2. Gonorrhoea

  3. Giardiasis

  4. Geotrichosis

  5. Gas gangrene


Correct Option: A
Explanation:

Donovanosis is communicated through Klebsiella granulomatis and destroys the body tissues.

Which of the following diseases affects dermis and subcutaneous fat?

  1. Cellulitis

  2. Chicken pox

  3. Chikungunya fever

  4. Chlamydia

  5. Clonorchiasis


Correct Option: A
Explanation:

Cellulitis affects dermis and subcutaneous fat.

Which of the following diseases infects horses, donkeys and zebras and causes death due to disorders of the central nervous system?

  1. Venezuelan haemorrhagic fever

  2. Viral pneumonia

  3. Yersinia pseudotuberculosis infection

  4. Venezuelan equine encephalitis

  5. Vibrio parahaemolyticus


Correct Option: D
Explanation:

Venezuelan equine encephalitis causes infection in horses, donkeys and zebras. They suddenly die due to disorders of the central nervous system.

Match the diseases with their causative agents.

 
Diseases Causative agents
A. Valley fever 1. Dermacentor andersoni
B. Rabbit fever 2. Francisella tularensis
C. American tick fever 3. Borrelia hermsii
D. Relapsing fever 4. Coccidioides immitis
  1. A - 1, B - 3, C - 2, D - 4

  2. A - 2, B - 1, C - 4, D - 3

  3. A - 4, B - 2, C - 1, D - 3

  4. A - 3, B - 2, C - 4, D - 1

  5. A - 1, B - 2, C - 3, D - 4


Correct Option: C
Explanation:

This option is correct because all the diseases are correctly matched with their causative agents.

Which of the following belongs to Herpesviridae family of DNA viruses?

  1. Human metapneumovirus

  2. Human parainfluenza virus infection

  3. Epstein–Barr virus infectious mononucleosis

  4. Hepatitis D

  5. Hantavirus pulmonary syndrome


Correct Option: C
Explanation:

Epstein–Barr virus belongs to the Herpesviridae family of DNA viruses.

Which of the following bacteria are responsible for neonatal conjunctivitis in infants?

  1. Opisthorchis viverrini and Opisthorchis felineus

  2. Neisseria gonorrhoeae and Chlamydia trachomatis

  3. Borrelia hermsii and Borrelia recurrentis

  4. Trichophyton rubrum and Trichophyton mentagrophytes

  5. Coccidioides immitis and Coccidioides posadasii


Correct Option: B
Explanation:

Neisseria gonorrhoeae and Chlamydia trachomatis are responsible for neonatal conjunctivitis in infants.

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