Microbiology MCQs

Option A: IgG

Option B: IgA

Option C: IgM

Option D: IgD

Correct Answer: IgM ✔

Option A: Involved in multidrug resistance transfer

Option B: Involved in conjugation

Option C: Imparts capsule formation

Option D: Imparts pili formation

Correct Answer: Both A & B ✔

Option A: Carbolic acid spraying

Option B: Washing with soap and water

Option C: Formaldehyde fumigation

Option D: ETO gas

Correct Answer: Formaldehyde fumigation ✔

Option A: Incineration

Option B: Dumping

Option C: Autoclaving

Option D: Burying

Correct Answer: Incineration ✔

Option A: Staphylococcus

Option B: Micrococcus

Option C: Sarcina

Option D: Aerococcus

Correct Answer: Sarcina ✔

Option A: Lag phase

Option B: Log phase

Option C: Stationary phase

Option D: Decline phase

Correct Answer: Stationary phase ✔

Option A: B-Lymphocytes

Option B: T-lymphocytes

Option C: Monocytes

Option D: Leukocytes

Correct Answer: T-lymphocytes ✔

Option A: Salmonella

Option B: Klebsiella

Option C: Spirochetes

Option D: Bacillus

Correct Answer: Spirochetes ✔

Option A: Bordetella

Option B: Brucella

Option C: Borrelia

Option D: None of the above

Correct Answer: Borrelia ✔

Option A: Gram’s staining

Option B: Fontana’s staining

Option C: India ink preparation

Option D: Zheil-Neilson’s staining

Correct Answer: India ink preparation ✔

Option A: Monotrichate

Option B: Peritrichate

Option C: Bipolar

Option D: Lophotrichate

Correct Answer: Lophotrichate ✔

Option A: Decreased virulence

Option B: Increased Virulence

Option C: No change

Option D: None

Correct Answer: Increased Virulence ✔

Option A: IgD

Option B: IgE

Option C: IgG

Option D: IgM

Correct Answer: IgM ✔

Option A: live vaccine

Option B: T.B vaccine

Option C: Orally administered

Option D: All of the above

Correct Answer: Orally administered ✔

Option A: using Bacillus stearo thermo philus

Option B: Using non-pathogenic strain of clostridium tetani

Option C: Using chemical indicator

Option D: Using methylene blue

Correct Answer: using Bacillus stearo thermo philus ✔

Option A: are proteins

Option B: are heat labile

Option C: are highly antigenic

Option D: activate complement by the alternate pathway

Correct Answer: activate complement by the alternate pathway ✔

Option A: wall

Option B: nucleus

Option C: membrane

Option D: Capsule

Correct Answer: membrane ✔

Option A: Urticaria

Option B: Asthma

Option C: Anaphylaxis

Option D: Arthus reaction

Correct Answer: Arthus reaction ✔

Option A: VL domian

Option B: CL domian

Option C: CH1 domian

Option D: CH2 domian

Correct Answer: CH2 domian ✔

Option A: IgA

Option B: IgE

Option C: IgM

Option D: IgD

Correct Answer: IgA ✔

Option A: Anaphylactic

Option B: Angioneurotic edema

Option C: Cell-mediated immunity

Option D: Systemic arthus reaction

Correct Answer: Systemic arthus reaction ✔

Option A: Macrophages

Option B: Plasma cells

Option C: T-cells

Option D: Neutrophils

Correct Answer: Plasma cells ✔

Option A: Treponema

Option B: Actinomyces

Option C: Streptococcus

Option D: Mycobacterium

Correct Answer: Treponema ✔

Option A: Vegetative forms

Option B: Spore forms

Option C: Both of the above

Option D: None of the above

Correct Answer: Vegetative forms ✔

Option A: Hepatitis vaccination

Option B: Gamma globulin injection

Option C: Immune blood transfusion

Option D: Placental transfer of antibodies

Correct Answer: Placental transfer of antibodies ✔

Option A: Blood agar

Option B: Selenite F Broth

Option C: Mac Conkey agar

Option D: Nutrient Broth

Correct Answer: Selenite F Broth ✔

Option A: Golgi body

Option B: Endoplasmic reticulum

Option C: Nucleus

Option D: Mitochondria

Correct Answer: Endoplasmic reticulum ✔

Option A: IgE

Option B: IgM

Option C: IgG

Option D: IgA

Correct Answer: IgE ✔

Option A: 140°C x 2 hrs. x 10 lbs pr.

Option B: 121°F x 15 mts. x 15 lbs pr.

Option C: 121°F x 15 sec. x 15 lbs pr.

Option D: 121°C 15 mts. x 15 lbs pr.

Correct Answer: 121°C 15 mts. x 15 lbs pr. ✔

Option A: Heart and the liver

Option B: Brain and the meninges

Option C: Thymus and the appendix

Option D: Spleen and the lymph nodes

Correct Answer: Spleen and the lymph nodes ✔

Option A: Lysozyme

Option B: Secretozyme

Option C: Albumin

Option D: Isozyme

Correct Answer: Lysozyme ✔

Option A: Kill mircobes

Option B: Remove microbes

Option C: Inhibit microbial growth

Option D: Dehydrate microbial cells

Correct Answer: Remove microbes ✔

Option A: Resistance transfer factor (RTF)

Option B: Colicigenic factor (Col)

Option C: Fertility factor (F+)

Option D: All of the above

Correct Answer: Resistance transfer factor (RTF) ✔

Option A: Incubator

Option B: anaerobic jar

Option C: Refrigerator

Option D: Centrifuge

Correct Answer: anaerobic jar ✔

Option A: Disinfectant

Option B: Moist heat sterilisation

Option C: Antibiotics

Option D: Dry heat sterilization

Correct Answer: Disinfectant ✔

Option A: Pathogens killed but spores are not affected

Option B: Only pathogenic micro-organisms killed

Option C: Non-pathogenic killed

Option D: All pathogenic and non-pathogenic microorganisms killed

Correct Answer: All pathogenic and non-pathogenic microorganisms killed ✔

Option A: Time-consuming

Option B: Less effective

Option C: Causes instruments to rust

Option D: Causes sharp instruments to dull

Correct Answer: Time-consuming ✔

Option A: Delayed reaction

Option B: Immediate reaction

Option C: passive transfer by serum

Option D: None of the above

Correct Answer: Delayed reaction ✔

Option A: Boiling at 100°C

Option B: Disinfection by hypochlorite solution

Option C: Autoclave

Option D: Pasteurisation

Correct Answer: Autoclave ✔

Option A: IgG

Option B: IgD

Option C: IgM

Option D: IgA

Correct Answer: IgA ✔

Option A: Lysosomes

Option B: Proteolytic enzymes

Option C: Lymphotoxins

Option D: Vasoactive mediators

Correct Answer: Vasoactive mediators ✔

Option A: Mycoplasma

Option B: Chlamydiae

Option C: Rickettsiae

Option D: Spirochaetes

Correct Answer: Spirochaetes ✔

Option A: 3 minutes

Option B: 15 minutes

Option C: 30 minutes

Option D: 60 minutes

Correct Answer: 3 minutes ✔

Option A: Ethylene oxide gas

Option B: dry heat

Option C: chemical vapour

Option D: All of the above

Correct Answer: Ethylene oxide gas ✔

Option A: Atopic allergy

Option B: Serum sickness

Option C: Transfusion reaction

Option D: Contact dermatitis

Correct Answer: Serum sickness ✔

Option A: C2a

Option B: C3b

Option C: C4a

Option D: C5a

Correct Answer: C5a ✔

Option A: Pasteurization

Option B: Autoclave

Option C: Kochs sterilizer

Option D: hot air oven

Correct Answer: Autoclave ✔

Option A: IgA

Option B: IgD

Option C: IgE

Option D: IgG

Correct Answer: IgA ✔

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 ✔