Bacteriology MCQs

Option A: Aquatic bodies are main habitat

Option B: It can replicate in amoeba

Option C: Urine test is a reliable method

Option D: Person to person transmission

Correct Answer: Person to person transmission ✔

Option A: Varicella Zoster Virus

Option B: Papilloma Virus

Option C: Influenza Virus

Option D: Human immunodeficiency virus

Correct Answer: Papilloma Virus ✔

Option A: Aerobic bacterial disease

Option B: Anaerobic bacterial disease

Option C: Aerobic fungal disease

Option D: Anaerobic fungal disease

Correct Answer: Anaerobic bacterial disease ✔

Option A: Clostridium tetani travels via the nerves to the anterior horn dells in spinal cord

Option B: The tetanospasmin component of the exotoxin act on the post-synaptic neurones and prevents impulse transmission

Option C: The patient should be given tetanus toxoid intravenously

Option D: Causes positive Nagler reaction

Correct Answer: Clostridium tetani travels via the nerves to the anterior horn dells in spinal cord ✔

Option A: Produces heat stable enterotoxin

Option B: Causes Shangai fever

Option C: Cannot be destroyed at 55 degree at 1 hr.

Option D: Does not produce any pigment

Correct Answer: Causes Shangai fever ✔

Option A: It is non-halophilic

Option B: Grows on simple media

Option C: Man is the only natural host

Option D: Cannot survive in extracellular environment

Correct Answer: Cannot survive in extracellular environment ✔

Option A: Susceptible to many antibiotics

Option B: Present mainly in mixed infections

Option C: Most common species is B fragilis

Option D: Bile resistant anerobes

Correct Answer: Susceptible to many antibiotics ✔

Option A: Most common cause of urethritis is male

Option B: All stains are highly susceptible to penicillin

Option C: Wide spread axoregnic stains cause disseminated gonococcal infection

Option D: Found exclusively in human beings.

Correct Answer: All stains are highly susceptible to penicillin ✔

Option A: Dextran

Option B: Epithelial cells

Option C: Bacteria

Option D: Sucrose

Correct Answer: Dextran ✔

Option A: Gram’s stain

Option B: H & E stain

Option C: Ziehl-Neelsen stain

Option D: PAS stain

Correct Answer: Ziehl-Neelsen stain ✔

Option A: Treponema pallidum

Option B: Treponjema pertenue

Option C: Borrelia burgdorferi

Option D: Borrelia vincenti

Correct Answer: Borrelia vincenti ✔

Option A: Streptococcus sanguis

Option B: Porphyromonas gingivalis

Option C: Treponema denticola

Option D: Spirochetes

Correct Answer: Streptococcus sanguis ✔

Option A: H. influenza

Option B: Moraxella catarrhalis

Option C: Legionella

Option D: Burkholderia cepacia

Correct Answer: Legionella ✔

Option A: Shigella sonnei

Option B: Salmonella typhi

Option C: Proteus mirabilis

Option D: Klebsiella pneumonia

Correct Answer: Shigella sonnei ✔

Option A: Chlamydia trachomatis

Option B: Donovania granulomatis

Option C: Bartonella henselae

Option D: Hemophilia ducreya

Correct Answer: Bartonella henselae ✔

Option A: Group B staphylococci

Option B: Group A steptococci

Option C: Gonococci

Option D: Pneumococci

Correct Answer: Group B staphylococci ✔

Option A: Pseudomonas aerogenosa

Option B: coli

Option C: Proteus

Option D: diphtheria

Correct Answer: Pseudomonas aerogenosa ✔

Option A: Enterotoxin A

Option B: Enterotoxin B

Option C: Enterotoxin D

Option D: Enterotoxin F

Correct Answer: Enterotoxin F ✔

Option A: Staph. aureus

Option B: Salmonella

Option C: B.Cereus

Option D: Clostridium botulinum

Correct Answer: Staph. aureus ✔

Option A: Transduction

Option B: Translation

Option C: Cell fusion

Option D: Conjugation

Correct Answer: Conjugation ✔

Option A: E.coli

Option B: Haemophilus

Option C: Proteus

Option D: Staphylococcus

Correct Answer: Proteus ✔

Option A: Vancomycin

Option B: Imipenem

Option C: Teichoplanin

Option D: Linezolid

Correct Answer: Imipenem ✔

Option A: Wilson Blair medium

Option B: Bile broth

Option C: Bordet Gengou medium

Option D: Robertson cooked meat medium

Correct Answer: Bordet Gengou medium ✔

Option A: Anthrax

Option B: Rabies

Option C: Cholera

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Gram positive bacteria

Option B: Gram negative bacteria

Option C: Yeast

Option D: Protozoa

Correct Answer: Gram positive bacteria ✔

Option A: Tissue culture

Option B: Chick embryos

Option C: Artificial media

Option D: Rabbit testis only

Correct Answer: Rabbit testis only ✔

Option A: Mycoplasma

Option B: Mycobacteria

Option C: Spirochaete

Option D: Chlamydia

Correct Answer: Spirochaete ✔

Option A: Gram staining

Option B: Fermentation of mannitol and sorbital

Option C: Production of intracellular and extracellular adherent polysacharide

Option D: Colony morphology on saliva agar

Correct Answer: Gram staining ✔

Option A: Pasturella spp

Option B: Francisella spp

Option C: Bartonella spp

Option D: Brucella spp

Correct Answer: Brucella spp ✔

Option A: Type of hemolysis

Option B: Gram staining

Option C: Growth characteristics

Option D: Bile solubility

Correct Answer: Bile solubility ✔

Option A: M Protein

Option B: Cultural characteristics

Option C: Bile Solubility

Option D: Cell wall carbohydrate

Correct Answer: Cell wall carbohydrate ✔

Option A: Foot paid on nine branded armadilo

Option B: Tail of guinea pig

Option C: Testes of albino rats

Option D: Testes of guinea pig

Correct Answer: Foot paid on nine branded armadilo ✔

Option A: Ziel Nelson

Option B: Kin Young stain

Option C: Auramine-Rhodamine stain

Option D: Giemsa stain

Correct Answer: Auramine-Rhodamine stain ✔

Option A: M. leprae

Option B: M. avium intracellulare

Option C: M. tuberculosis

Option D: Kansasi

Correct Answer: M. tuberculosis ✔

Option A: Theta toxin

Option B: Lecithinase

Option C: Desmolase

Option D: Cytokinin

Correct Answer: Lecithinase ✔

Option A: Clostridium tetani

Option B: Clostridium welchii

Option C: Coli

Option D: Strep. Faecalis

Correct Answer: Clostridium welchii ✔

Option A: Multiply within living cell

Option B: Transmitted by arthropod vectors

Option C: Respond to tetracycline therapy

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Yaws

Option B: Lepromatous Leprosy

Option C: Malaria

Option D: All of the above

Correct Answer: All of the above ✔

Option A: TPI test

Option B: VDRL test

Option C: TPHA test

Option D: FTAB test

Correct Answer: Both C & D ✔

Option A: Streptococcus Viridans

Option B: Staphylococcus epidermis

Option C: Staphylococcus aureus

Option D: Fungus

Correct Answer: Staphylococcus epidermis ✔

Option A: Tellurite Medium

Option B: Cary Blair Medium

Option C: Venkatraman – Ramakrishnan Medium

Option D: B & C

Correct Answer: B & C ✔

Option A: Bacteroides fragilis

Option B: Fusobacterium nucleatum

Option C: Peptostreptococcus anaerobius

Option D: Actinomyces Israeli

Correct Answer: All of the above ✔

Option A: Compliment fixation tests

Option B: Pili agglutination tests

Option C: Haemagglutination tests

Option D: All of the above tests

Correct Answer: All of the above tests ✔

Option A: Streptococcus viridans

Option B: Haemolytic streptococci

Option C: Staphylococcus aureus

Option D: Nisseria

Correct Answer: Streptococcus viridans ✔

Option A: Tryptophan

Option B: Niacin

Option C: B-12

Option D: Citrate

Correct Answer: Tryptophan ✔

Option A: Neisseria gonorrhea

Option B: Escherichia coli

Option C: T-strain mycoplasma

Option D: Streptococcus fecalis

Correct Answer: Escherichia coli ✔

Option A: Synapse

Option B: Muscle

Option C: Brain

Option D: Spinal card

Correct Answer: Spinal card ✔

Option A: Spore formation

Option B: Decreased virulence

Option C: Prevent their phagocytosis

Option D: Oxygen effect

Correct Answer: Prevent their phagocytosis ✔

Option A: Capsule

Option B: Flagella

Option C: Pili

Option D: Mesosomes

Correct Answer: Pili ✔

Option A: Decease in virulence

Option B: Loss of infectivity

Option C: Inability to spread through tissue

Option D: increase in invasiveness

Correct Answer: Decease in virulence ✔

Option A: Malaria

Option B: Whooping cough

Option C: Gas gangrene

Option D: Wool sorters disease

Correct Answer: Gas gangrene ✔

Option A: Acridine orange

Option B: Thioglavin

Option C: Congo red

Option D: Auramine and Rhodamine

Correct Answer: Auramine and Rhodamine ✔

Option A: Fungus

Option B: Acid fast, non-motile bacillus

Option C: Anaerobic, gram positive, non-acid fast bacteria.

Option D: Retrovirus

Correct Answer: Anaerobic, gram positive, non-acid fast bacteria. ✔

Option A: Unable to grow in the presence of oxygen

Option B: Unable to grow in the absence of oxygen

Option C: Able to grow in the presence of carbon dioxide

Option D: Able to grow in the presence of absence of oxygen

Correct Answer: Able to grow in the presence of absence of oxygen ✔

Option A: Anthrax

Option B: Typhoid

Option C: Bacillary dysentery

Option D: Cholera

Correct Answer: Anthrax ✔

Option A: Alpha hymolytic streptococci (S. viridans)

Option B: Staphylococci

Option C: Beta hemolytic streptococci

Option D: Pneumococci

Correct Answer: Alpha hymolytic streptococci (S. viridans) ✔

Option A: Pleomorphism

Option B: Elaboration of an enzyme that destroy penicillin

Option C: Penicillin analogue production

Option D: Lack of nucleic acid in the cell wall

Correct Answer: Elaboration of an enzyme that destroy penicillin ✔

Option A: Facio-cervical actinomycosis

Option B: Cutaneous anthrax

Option C: Infected squamous cell carcinoma

Option D: None of the above

Correct Answer: Cutaneous anthrax ✔

Option A: Salmonella

Option B: Klebsiella

Option C: Escherichia

Option D: Paracolons

Correct Answer: Salmonella ✔

Option A: Salk vaccine

Option B: Tetanus toxoid

Option C: Sabin’s oral vaccine

Option D: All of the above

Correct Answer: Salk vaccine ✔

Option A: E.coli

Option B: Bacteroides

Option C: Pseudomonas

Option D: Klebsiella

Correct Answer: Bacteroides ✔

Option A: Streptococcus

Option B: Staphylococcus

Option C: E.coli

Option D: Gonococci

Correct Answer: Staphylococcus ✔

Option A: Lysozyme

Option B: Fibrinolysin

Option C: Coagulase

Option D: S protein

Correct Answer: Coagulase ✔

Option A: Though plasmids

Option B: Incorporating part of host DNA

Option C: Through bacteriophages

Option D: through conjugation

Correct Answer: Incorporating part of host DNA ✔

Option A: Clostridium tetani

Option B: Pseudomonas

Option C: Shigella

Option D: Klebsiella

Correct Answer: Clostridium tetani ✔

Option A: Syphilis

Option B: Gonorrhea

Option C: TB

Option D: Tyhoid

Correct Answer: Syphilis ✔

Option A: Tularemia

Option B: Diptheria

Option C: Gonorrhoea

Option D: All o f the above

Correct Answer: Diptheria ✔

Option A: in the presence of oxygen

Option B: in the presence of nitrogen

Option C: in the absence of oxygen

Option D: differential media

Correct Answer: in the absence of oxygen ✔

Option A: It consists of a mixed polymer called peptidoglycon

Option B: It is the structure principally responsible for the reaction of gram staining

Option C: It is a unique flexible plastic structure

Option D: It contains D-isomers of amino acids

Correct Answer: It is a unique flexible plastic structure ✔

Option A: Cl. difficile

Option B: Staphylococcus

Option C: Cl. welchii

Option D: Cl. botulinum

Correct Answer: Cl. difficile ✔

Option A: It is composed of DNA

Option B: It doe not contain histones

Option C: It is circular

Option D: Its DNA has both introns and extrons

Correct Answer: Its DNA has both introns and extrons ✔

Option A: Cocci

Option B: Spirochetes

Option C: Bacteriophages

Option D: Filamentous rods

Correct Answer: Spirochetes ✔

Option A: Capsule

Option B: Fimbria

Option C: Flagella

Option D: None of the above

Correct Answer: Fimbria ✔

Option A: Haemorrhage

Option B: perforation

Option C: Osteomyelitis

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Feacus

Option B: Urine

Option C: Blood

Option D: All of the above

Correct Answer: Blood ✔

Option A: Bunch of a

Option B: Chain of beads

Option C: Drum stick

Option D: Safely pin

Correct Answer: Drum stick ✔

Option A: Scanning microscope

Option B: Inverted microscope

Option C: Dark ground microscope

Option D: Electron microscope

Correct Answer: Dark ground microscope ✔

Option A: Treponema pallidum

Option B: Mycobacterium leprae

Option C: N. gonorrhoeae

Option D: None of the above

Correct Answer: None of the above ✔

Option A: Viral stomatitis

Option B: Diptheria

Option C: Tuberculosis

Option D: Typhoid fever

Correct Answer: Typhoid fever ✔

Option A: Tannerella

Option B: Porphyromonas

Option C: Buccae

Option D: Prevotella

Correct Answer: Buccae ✔

Option A: Most common cause is B. Petrussis

Option B: It may occur in children and young adult after vaccination

Option C: Bacteria culture from nasopharyngeal swab is the definitive diagnosis

Option D: Presence of antibodies in serum in diagnostic of the disease

Correct Answer: Presence of antibodies in serum in diagnostic of the disease ✔

Option A: 5

Option B: 10

Option C: 15

Option D: 20

Correct Answer: 10 ✔

Option A: Actinomyces viscosus

Option B: Lactobacillus acidophilus

Option C: Streptococcus mutans

Option D: Veilonella parvula

Correct Answer: Lactobacillus acidophilus ✔

Option A: Strick aerobes

Option B: Can grow in disinfectants in hospital

Option C: Infection is mostly due to endogenous source

Option D: Most common organism is burn patient

Correct Answer: Infection is mostly due to endogenous source ✔

Option A: Diagnosis

Option B: Prognosis

Option C: Treatment plan

Option D: Epidemiology

Correct Answer: Prognosis ✔

Option A: Base lines differ depending on the endemicity of the disease

Option B: O antibodiest last longer and hence is not indicative of recent infection

Option C: H antigen cannot differentiate between subtypes

Option D: High titre value in a single widal test is not confirmative

Correct Answer: O antibodiest last longer and hence is not indicative of recent infection ✔

Option A: Faeces & urine of rodents is the cause

Option B: Onset of IgM in 2 days

Option C: Incubation period is 10 days

Option D: It is sensitive to penicillin

Correct Answer: Onset of IgM in 2 days ✔

Option A: Invasion

Option B: Endotoxin

Option C: Exotoxin

Option D: Capsule

Correct Answer: Exotoxin ✔

Option A: Ulcerative gingivostomatitis

Option B: Caused due to malnutrition

Option C: A symbiotic infection

Option D: Caused by leptospira interrogans

Correct Answer: Caused by leptospira interrogans ✔

Option A: Rheumatoid arthritis

Option B: Typhoid fever

Option C: Rheumatie fever

Option D: Rickettsial fever

Correct Answer: Rheumatie fever ✔

Option A: Synovial fluid

Option B: Myocardium

Option C: Cardiac valves

Option D: Vascular intima

Correct Answer: Cardiac valves ✔

Option A: Clostridium botulinum

Option B: Clostridium welchii

Option C: Clostridium tetani

Option D: Clostridium difficile

Correct Answer: Clostridium welchii ✔

Option A: ADP – ribosylation of the G regulatory protein

Option B: Inhibition of adenyl cyclase

Option C: Activation of GTPase

Option D: Active absorption of NaCI

Correct Answer: A. ADP – ribosylation of the G regulatory protein ✔

Option A: Cardiolipin

Option B: Plasminogen

Option C: Palmityl lecithin

Option D: Serine

Correct Answer: Cardiolipin ✔

Option A: Incubation period of 24 hours

Option B: Requires immediate antibiotics

Option C: Common with dairy products

Option D: Heat labile enterotoxin

Correct Answer: Common with dairy products ✔

Option A: Culture

Option B: Gram stain

Option C: Biochemical reaction

Option D: Haemagglutination test

Correct Answer: Haemagglutination test ✔

Option A: Transduction

Option B: Translation

Option C: Lysogeny

Option D: Conjugation

Correct Answer: Lysogeny ✔

Option A: Group A

Option B: Group B

Option C: Group C

Option D: Group D

Correct Answer: Group B ✔

Option A: Y. pestis

Option B: Pertussis

Option C: Mycoplasma

Option D: M-Tuberculosis

Correct Answer: Pertussis ✔

Option A: Aryl sulphatase test

Option B: Niacin test

Option C: Neutral red test

Option D: Catalase peroxidase test

Correct Answer: Neutral red test ✔