Explore topic-wise MCQs in Microbiology.

This section includes 204 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.

1.

Arachnia species are primarily found in tonsillar crypt and

A. Nose
B. Eyes
C. Skin
D. Mouth
Answer» E.
2.

A virus, bacteria or any other microorganism that can cause disease is called

A. Virus
B. Bacteria
C. Pathogens
D. Microbes
Answer» D. Microbes
3.

For 'meningococcal' infection drug of choice is

A. Pencillin
B. Pencillin G
C. Cephalosporins
D. Beta lactam
Answer» C. Cephalosporins
4.

'Peridontal' infections are caused by the

A. Porphyromonas
B. Peptococcus
C. Moraxella
D. Rhodococcus
Answer» B. Peptococcus
5.

'HIV' is transmitted within the

A. Mouth
B. Birth canal
C. Skin
D. Colon
Answer» C. Skin
6.

A medical condition, lack of appetite for food is a major symptom, known as

A. Anorexia
B. Malaise
C. Stomach problem
D. Ulcer
Answer» B. Malaise
7.

Candida albican, present as a normal flora in mouth, colon and

A. Vagina
B. Intestine
C. Uterus
D. Skin
Answer» B. Intestine
8.

Food poisoning caused by S. aureus is characterized by nonbloody diarrhoea and vomiting, due to a toxin, named as

A. Exotoxins
B. Endotoxins
C. Enterotoxins
D. Foreign bodies
Answer» D. Foreign bodies
9.

'Leprosy' is caused by

A. Mycobacterium
B. Mycobacterium tuberculosis
C. Mycobacterium leprae
D. Yersinia pestis
Answer» D. Yersinia pestis
10.

'Enteric' fever is caused by

A. Pseudomonas
B. E. coli
C. Salmonella
D. S. aureus
Answer» D. S. aureus
11.

After a viral infection, humans and other animals produces a heterogeneous group of 'glycoproteins' named as

A. Killer cells
B. Interferons
C. Alpha and beta cells
D. Lymphocytes
Answer» C. Alpha and beta cells
12.

Mycobacterium 'tuberculosis' is an

A. Aerobe
B. Obligate aerobe
C. Obligate anaerobe
D. Anaerobe
Answer» C. Obligate anaerobe
13.

'N. gonorrhoea' enters body through

A. Respiratory tract
B. Genital tract
C. Nose of humans
D. Eyes of humans
Answer» C. Nose of humans
14.

Natural host for 'Chlamydiae trachomatis' is

A. Pigs
B. Human
C. Rats
D. Cats
Answer» C. Rats
15.

'Cat bite' is mode of transmission for

A. Pasteurella multocida
B. Yersinia pestis
C. Salmonella enteritidis
D. E.Coli
Answer» B. Yersinia pestis
16.

'rat bite' fever is caused by

A. Spirillum minor
B. Streptobacillus moniliformis
C. Yersinia enterocolitica
D. Eikenella
Answer» B. Streptobacillus moniliformis
17.

'Bacteroides fragillis' is a specie of bacteria that is present in colon of

A. Human
B. Aves
C. Rats
D. Goats
Answer» B. Aves
18.

A gram variable, facultative rod that is causative agent for bacterial vaginosis is named as

A. Gardnerella vaginalis
B. Fusobacterium
C. Eubacteria
D. Eikenella
Answer» B. Fusobacterium
19.

What is most distinguishing feature of mycoplasma ?

A. Wall less
B. Saprophyte
C. Marine
D. Ozone layer habitat
Answer» B. Saprophyte
20.

Other name for 'plague' is

A. Black cough
B. Black fever
C. Whooping cough
D. Black death
Answer» E.
21.

Ant phagocytic capsule of 'Bacillus anthracis' composed of

A. D-glutamate
B. Polypeptide
C. Peptide
D. Carbohydrates
Answer» B. Polypeptide
22.

Reticuloendothelial system of humans includes bone marrow, spleen, liver and

A. Joints
B. Synovial fluid
C. Mucous
D. Lymph nodes
Answer» E.
23.

Strains that are produced from 'enterotoxins' do not cause

A. Inflammation
B. Dysentery
C. Plague
D. Rash
Answer» B. Dysentery
24.

'Breast' milk is a mode of transmission for

A. Human T-cell leukaemia virus
B. E.coli
C. Treponema
D. Parvovirus
Answer» B. E.coli
25.

'Papillomavirus' enters body through

A. Mouth
B. Skin
C. Nose
D. Eye
Answer» C. Nose
26.

Animal 'reservoir' for Hantaviruses

A. Monkeys
B. Deer
C. Civet cat
D. Fowls
Answer» C. Civet cat
27.

Pathogens that can cause serious infections in 'immunocompromised' patients are called

A. Infectious pathogens
B. Opportunistic pathogens
C. Virulent pathogens
D. Lethal pathogens
Answer» C. Virulent pathogens
28.

Reservoir, for rat fleas, known to be a

A. Bat
B. Rat
C. Human
D. Pig
Answer» C. Human
29.

'Bronchiolitis' is a disease caused by virus

A. Respiratory syncytial virus
B. Rotavirus
C. Varicella-zoster virus
D. Papilloma virus
Answer» B. Rotavirus
30.

'Endocarditis' is infection caused by the

A. Actinobacillus actinomycetemcomitans
B. Achromobacter
C. Actinobacillus
D. Acintobacter
Answer» B. Achromobacter
31.

Q?fever was first described in?

A. 1923
B. 1935
C. 1944
D. 1983
Answer» C. 1944
32.

Water is portal of entry for 'leptospira interrogans' that causes

A. Leptopirosis
B. HIV
C. Aids
D. Leprosy
Answer» B. HIV
33.

What is size of lamda bacteriophage ?

A. 300 nm
B. 200 nm
C. 400 nm
D. 100 nm
Answer» C. 400 nm
34.

Veillonella' is part of normal flora in human and is found in colon, mouth and

A. Skin
B. Eyes
C. Vagina
D. Anus
Answer» D. Anus
35.

'Enterocolitis' is caused by

A. Yersinia pseudotuberculosis
B. Yersinia pestis
C. Yersinia enterocolitica
D. E.Coli
Answer» D. E.Coli
36.

A 'coccobacillary' rod that is found in soil and water is named as

A. Acintobacter
B. Actinobacillus
C. Achromobacter
D. Aeromonas
Answer» B. Actinobacillus
37.

Polypeptides that are secreted by bacterial cell and released outside, called

A. Endotoxins
B. Exotoxins
C. Toxins
D. Virulent factors
Answer» C. Toxins
38.

'Adenovirus' is involved in causing

A. Fever
B. Typhoid
C. Pneumonia
D. Rabies
Answer» D. Rabies
39.

Alternative name for 'polymorphonuclear leukocytes' is

A. Leukocytes
B. Erthyrocytes
C. Granulocytes
D. Phages
Answer» D. Phages
40.

Reservoir for 'mycobacterium bovis' is

A. Ticks
B. Goats
C. Cows
D. Cattles
Answer» D. Cattles
41.

Reservoir for 'dengue' virus is

A. Deers
B. Monkeys
C. Bats
D. Fowls
Answer» C. Bats
42.

Portal of entry for 'HIV' is

A. Skin
B. Mouth
C. Blood
D. Nose
Answer» D. Nose
43.

Sepsis' is transmitted by

A. Seafood
B. Meat
C. Milk
D. Breast feeding
Answer» B. Meat
44.

Parvovirus 'B19' is a bacteria, follow transplacental mode of transmission, causes a disease, named as

A. Hydrops fetalis
B. Toxoplasmosis
C. Syphilis
D. Thrush
Answer» B. Toxoplasmosis
45.

Tuberculosis is caused by mycobacterium tuberculosis that enters body via

A. Respiratory tract
B. Skin
C. Gastrointestinal tract
D. Mucosa
Answer» B. Skin
46.

Tularemia' is a disease, transmitted, by means of

A. Bees
B. Flies
C. Ticks
D. Mites
Answer» D. Mites
47.

M. tuberculosis is transmitted from person to person, through

A. Intimate contact
B. Respiratory aerosol
C. Faecal discharge
D. Touch
Answer» C. Faecal discharge
48.

Mode of transmission of 'cytomegalovirus' is

A. Food
B. Milk
C. Monkeys
D. Breast feeding
Answer» E.
49.

Only humans are infected by H. influenzae and they have no

A. Animal reservoir
B. Capsule
C. Antigen
D. Serotype
Answer» B. Capsule
50.

Term 'endocarditis' refer to as

A. Damaged lungs
B. Damaged heart valve
C. Damaged skin
D. Damaged mucous
Answer» C. Damaged skin