HEALTH SCIENCES
WARANGAL, TELANGANA-506 002
MBBS SECOND YEAR DEGREE
EXAMINATIONS: JUNE, 2025
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MICROBIOLOGYPaper -I
(NEW SCHEME)
Time: 3 Hours
Max Marks: 100
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Note: Answer all questionsGive Diagrammatic representation wherever necessary
Multiple Choice Questions: 10 X 1=10
1) Robertson's cooked meat medium is an example of:
a) Enriched medium
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b) Enrichment mediumc) Anaerobic medium
d) Selective medium
2) Mechanism of direct transfer of free DNA is:
a) Transformation
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b) Transpositionc) Conjugation
d) Transduction
3) Filariasis in India is transmitted by
a) Musca domestica
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b) Anopheles gambiae
c) Culex quinquefasciatus
d) Aedes aegypti
4) BCG vaccine is an example of:
a) Natural active immunity
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b) Natural passive immunityc) Artificial passive immunity
d) Artificial active immunity
5) Which of the following samples is not useful in
diagnosis of Enteric fever?
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a) Bloodb) Stool
c) Urine
d) Sputum
6) Which of the following parasite causes megaloblastic
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anaemia?a) Ancylostoma duodenale
b) Plasmodium falciparum
c) Diphyllobothrium latum
d) All of the above
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7) Which one of the following is an enriched medium?a) Selenite F Broth
b) Peptone water
c) MacConkey agar
d) Blood agar
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8) Organisms producing extended spectrum B-lactamases(ESBL) are:
a) Resistant to all penicillins- 1st, 2nd & 3rd generation
cephalosporins and monobactams
b) Resistant to penicillins
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c) Resistant to cephalosporins of 1st, 2nd & 3rdgeneration
d) Resistant to cephalosporins of 4th generation
9) Which of the following can be converted to toxoid by
formaldehyde
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a) Exotoxinb) Endotoxin
c) Endospore
d) All of the above
10) All waste sharps should be discarded in:
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a) Cardboard boxes with blue coloured markingsc) Red coloured non-chlorinated container
b) Puncture proof and leak proof white containers
d) Yellow coloured container
Essay/ Long Answer Questions: 2 X 15=30
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11) Define and classify Hypersensitivity Reactions. Writein detail about type IV Hypersensitivity Reactions.
(4+4+7)
12) A 7 year old female child presented to cardiology
OPD with swollen red tender joints which migrated from
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one joint to another over a period of hours. The child washaving abnormal gait. She also complained of painless
small mobile lumps beneath the skin overlying bony
prominences. On auscultation murmur was heard over the
Mitral valve area. ECG showed prolongation of P-R
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interval. Child gives a history of sore throat 3 weeks back.a. What is the probable clinical diagnosis and its
aetiological agent?
b. Describe the diagnosis criteria used for this
condition.
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c. How will you prevent recurrence of such episodes?(3+7+5)
Short Answer Questions: 7X 6 = 42
13) Anaerobic culture methods.
14) Bacterial Flagella.
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15) Polymerase chain reaction.16) Transduction.
17) Methods of detecting Viral Growth in Cells.
18) Stool concentration techniques.
19) Laboratory diagnosis of Fungal Infection.
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Very Short Answer Questions: 6X3=1820) Negribody
21) Four differences between Classical and El tor
Vibrios.
22) Sheathed Microfilaria.
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23) Visceral Larva Migrans.24) Give three examples of Heterophile Agglutination
reactions.
25) What is the principle of a Fluorescence Microscope.
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Document Outline
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