General Microbiology MCQs

Option A: Tuberculosis (BCG)

Option B: Typhoid

Option C: Varicella Zoster virus

Option D: Cholera

Correct Answer: Cholera ✔

Option A: Eosin stain

Option B: Haemotoxin stain

Option C: Ninhydrin stain

Option D: Blue stain

Correct Answer: Ninhydrin stain ✔

Option A: Anaphylaxis

Option B: Arthus reaction

Option C: Serum sickness

Option D: Contact dermatitis

Correct Answer: Serum sickness ✔

Option A: Severe reaction following the injection of protein solution in a sensitized individual

Option B: Severe reaction following primary injection of Protein solutions

Option C: State of immunity developed by repeated injections of any foreign substance

Option D: Severe reaction resulting from sensitivity to common allergens

Correct Answer: Severe reaction following the injection of protein solution in a sensitized individual ✔

Option A: 1-2% cetrimide

Option B: 100% alcohol

Option C: 2% Lysol

Option D: 5% chloroxylene

Correct Answer: 100% alcohol ✔

Option A: NK Cells

Option B: Cytotoxic T cells

Option C: B cells

Option D: Memory B cells

Correct Answer: NK Cells ✔

Option A: IL-1

Option B: IL-6

Option C: IL-8

Option D: TNF

Correct Answer: IL-8 ✔

Option A: Direct microscopy

Option B: Culture

Option C: ELISA

Option D: DNA probe

Correct Answer: Culture ✔

Option A: Rickettsiae

Option B: Mycoplasma

Option C: Chlamydiae

Option D: Ehrlichiae

Correct Answer: Mycoplasma ✔

Option A: Active

Option B: Passive

Option C: Herd

Option D: Local

Correct Answer: Active ✔

Option A: Atopy

Option B: Anaphylaxis

Option C: Arthus phenomenon

Option D: Serum sickness

Correct Answer: Arthus phenomenon ✔

Option A: Anaphylaxis

Option B: Delayed hypersensitivity

Option C: Immune complex mediated

Option D: Cytotoxic / cytolytic type

Correct Answer: Cytotoxic / cytolytic type ✔

Option A: Trichrome Methylene blue

Option B: Carbol Fuschin

Option C: Acid Fast Stain

Option D: Calcoflour White

Correct Answer: Trichrome Methylene blue ✔

Option A: CD7+ Pro-T-Cells

Option B: CD5+ Pre-T-Cells

Option C: CD8+ Pro-T-Cells

Option D: CD8+ Pre-T-Cells

Correct Answer: CD7+ Pro-T-Cells ✔

Option A: IgE

Option B: IgM

Option C: IgA

Option D: IgG

Correct Answer: IgE ✔

Option A: IgG

Option B: IgA

Option C: IgD

Option D: IgE

Correct Answer: IgE ✔

Option A: IgG

Option B: IgA

Option C: IgM

Option D: IgE

Correct Answer: IgG ✔

Option A: Secretory piece

Option B: H chain

Option C: L chain

Option D: J piece

Correct Answer: H chain ✔

Option A: It kills bacteria and spores

Option B: It kills all bacteria except thermoduric bacteria

Option C: It kills 95% of microorganisms

Option D: Tubercle bacilli are destroyed

Correct Answer: It kills all bacteria except thermoduric bacteria ✔

Option A: Hot air oven

Option B: Auto claving

Option C: Irradiation

Option D: Ethylene dioxide

Correct Answer: Hot air oven ✔

Option A: Glassware

Option B: Rubber tubes

Option C: Sharp instrument

Option D: Liquid paraffin

Correct Answer: Rubber tubes ✔

Option A: Autoclaving

Option B: Boiling

Option C: Cidex

Option D: Gamma radiation

Correct Answer: Boiling ✔

Option A: B cells

Option B: T cells

Option C: Monocytes

Option D: Macrophage

Correct Answer: T cells ✔

Option A: Macrolin

Option B: Heat

Option C: Bovine serum

Option D: Phytohaemagglutinin

Correct Answer: Phytohaemagglutinin ✔

Option A: Suquestrated antigens

Option B: Isoantigens

Option C: Haptens

Option D: Heterophile antigens

Correct Answer: Heterophile antigens ✔

Option A: Type I

Option B: Type II

Option C: Type III

Option D: Type IV

Correct Answer: Type I ✔

Option A: Type I

Option B: Type II

Option C: Type III

Option D: Type IV

Correct Answer: Type I ✔

Option A: Arthus reaction

Option B: SLE

Option C: Auto immune hemolytic anemia

Option D: Contact dermatitis

Correct Answer: Auto immune hemolytic anemia ✔

Option A: Ultra violet rays

Option B: Ultrasonic vibrations

Option C: Infrared rays

Option D: Gamma rays

Correct Answer: Gamma rays ✔

Option A: Xenograft

Option B: Autograft

Option C: Allograft

Option D: Isograft

Correct Answer: Isograft ✔

Option A: IgA

Option B: IgG

Option C: IgM

Option D: IgE

Correct Answer: IgE ✔

Option A: Bacterial products

Option B: Toxoids

Option C: Vaccines

Option D: Antitoxins

Correct Answer: Antitoxins ✔

Option A: Active acquired immunity

Option B: Passive acquired immunity

Option C: Natural active immunity

Option D: Passive natural immunity

Correct Answer: Passive natural immunity ✔

Option A: IgM antibodies

Option B: Lysozyme

Option C: Mast cells

Option D: IgA antibodies

Correct Answer: IgA antibodies ✔

Option A: Plasma cells

Option B: Activated macrophages

Option C: Lymphocytes

Option D: Platelet

Correct Answer: Activated macrophages ✔

Option A: Interferons

Option B: Macrophages

Option C: Neutrophils

Option D: Autolysis

Correct Answer: Interferons ✔

Option A: Disproportionate antigen antibody levels

Option B: Excess antigen

Option C: Excess antibody

Option D: Hyper immune reaction

Correct Answer: Excess antibody ✔

Option A: Radioimmuno Assay

Option B: ELISA

Option C: Immunoflourescence

Option D: Passive hemaglutination

Correct Answer: Radioimmuno Assay ✔

Option A: IgG & igM

Option B: IgG & IgA

Option C: IgG & IgD

Option D: IgD & IgE

Correct Answer: IgG & igM ✔

Option A: Acts as a mucosal barrier for infection

Option B: Circulating antibody

Option C: Kills virus infected cells

Option D: Activates macrophages

Correct Answer: Acts as a mucosal barrier for infection ✔

Option A: Idiotope

Option B: Paratope

Option C: Epitope

Option D: Hapten

Correct Answer: Paratope ✔

Option A: IgA

Option B: IgE

Option C: IgG

Option D: IgM

Correct Answer: Both C & D ✔

Option A: Fungi

Option B: Gram +ve bacteria

Option C: Virus

Option D: Gram -ve bacteria

Correct Answer: Gram -ve bacteria ✔

Option A: Pseudomonas

Option B: coli

Option C: Proteus

Option D: Staphylococcus

Correct Answer: Proteus ✔

Option A: Transduction

Option B: Transformation

Option C: Mutation

Option D: conjugation

Correct Answer: conjugation ✔

Option A: Glutaraldehyde

Option B: Betapropiolactone

Option C: Formaldehyde

Option D: Hexachlorophen

Correct Answer: Both A & C ✔

Option A: 125°C for new seconds

Option B: 60°C for 15 minutes

Option C: 72°C for 5 minutes

Option D: 72° for 15 – 20 Sec

Correct Answer: D. 72° for 15 – 20 Sec ✔

Option A: -20°C to -7°C

Option B: -7°C to + 20°C

Option C: 25°C to 40°C

Option D: 55°C to 80°C

Correct Answer: 25°C to 40°C ✔

Option A: Transformation

Option B: Translation

Option C: Conjugation

Option D: Lysogeny

Correct Answer: Lysogeny ✔

Option A: Staphylococcus

Option B: Streptococcus

Option C: Gonococcus

Option D: Mycobacterium

Correct Answer: Mycobacterium ✔

Option A: Loefflers serum slope

Option B: Mc Conkey

Option C: Saboraud agar

Option D: Lowenstein Jensen medium

Correct Answer: Loefflers serum slope ✔

Option A: Chlorhexdine

Option B: Alcohol

Option C: Savlon

Option D: None of the above

Correct Answer: Chlorhexdine ✔

Option A: 10%

Option B: 2%

Option C: 5%

Option D: 15%

Correct Answer: 2% ✔

Option A: Introduction of complex media

Option B: Discovery of Rabies Vaccine

Option C: Discovery of M. Tuberculosis

Option D: Disproved spontaneous regression theory

Correct Answer: Discovery of M. Tuberculosis ✔

Option A: L-J medium

Option B: Robertson cooked meat medium

Option C: Loefflers medium

Option D: Sabourauds agar

Correct Answer: Robertson cooked meat medium ✔

Option A: Protein polysaccharide complex

Option B: Heat labile

Option C: Highly potent

Option D: Has specific tissue affinity

Correct Answer: Protein polysaccharide complex ✔

Option A: Forssman antigen antibody reaction

Option B: Weil-Felix reaction

Option C: Paul bunnel reaction

Option D: Widal reaction

Correct Answer: Widal reaction ✔

Option A: Increase toxigenicity

Option B: Increase antigenicity

Option C: Reduce the antigenicity

Option D: reduce the toxigenicity

Correct Answer: Increase antigenicity ✔

Option A: 1

Option B: 2

Option C: 3

Option D: 4

Correct Answer: 4 ✔

Option A: antigenic and toxic

Option B: antigenic and non-toxic

Option C: non-antigenic and toxic

Option D: non-antigenic and non-toxic

Correct Answer: antigenic and non-toxic ✔

Option A: Functional differences

Option B: Structural differences

Option C: Complemented fixation

Option D: None of the above

Correct Answer: Structural differences ✔

Option A: 1 hour

Option B: 1 day

Option C: 1 week

Option D: 1 Month

Correct Answer: 1 Month ✔

Option A: Erythema

Option B: Necrosis

Option C: Induration

Option D: Vasculitis

Correct Answer: Erythema ✔

Option A: Blood agar

Option B: Tissue culture

Option C: Sabouraud’s agar

Option D: Thioglycollate medium

Correct Answer: C. Sabouraud’s agar ✔

Option A: Clostridia

Option B: S. epidermidis

Option C: Choleria

Option D: Mycobacterium

Correct Answer: Clostridia ✔

Option A: Lysis

Option B: Oxidation

Option C: Hydrolysis of DNA

Option D: Coagulation of proteins

Correct Answer: Oxidation ✔

Option A: Epinephrine

Option B: Steroids

Option C: Anti histamines

Option D: Antibiotics

Correct Answer: Epinephrine ✔

Option A: The bacteria should be able to be isolated from a diseased tissue

Option B: When inoculated in experimental animals bacteria may or may not cause disease

Option C: Pure cultures can be obtained

Option D: Bacteria should be able to be isolated from the diseased tissue in the experimental animals

Correct Answer: When inoculated in experimental animals bacteria may or may not cause disease ✔

Option A: Hapten

Option B: Carrier

Option C: Super antigen

Option D: Toxin

Correct Answer: Hapten ✔

Option A: It can kill hepatitis B virus

Option B: Used for sterilizing surgical instruments

Option C: Can kill mycobacterium tuberculosis

Option D: Can kill vegetative bacterial cells

Correct Answer: Used for sterilizing surgical instruments ✔

Option A: Long wavelength

Option B: short wave lenght

Option C: Ozone

Option D: Heat

Correct Answer: short wave lenght ✔

Option A: One day

Option B: Two successive days

Option C: 60 minutes

Option D: Three successive days

Correct Answer: Three successive days ✔

Option A: Type I hypersensitivity

Option B: Type II hypersensitivity

Option C: Type III hypersensitivity

Option D: Type IV hypersensitivity

Correct Answer: Type I hypersensitivity ✔

Option A: Hot air oven

Option B: U.V. rays

Option C: Gamma rays

Option D: Boiling

Correct Answer: Gamma rays ✔

Option A: It has got more bactericidal activity

Option B: It has got more bacteriostatic activity

Option C: It has got no deleterious effect on the cement and lenses of instruments

Option D: Its application is easier

Correct Answer: It has got no deleterious effect on the cement and lenses of instruments ✔

Option A: Autoclaving

Option B: Hot air oven

Option C: UV-Radiation

Option D: Inspissation

Correct Answer: Hot air oven ✔

Option A: Louis pasteur

Option B: Robert koch

Option C: Hensen

Option D: Ogston

Correct Answer: Robert koch ✔

Option A: 20% phenol

Option B: High efficiency particle arrestors

Option C: 40% formaldehyde vapour

Option D: Chlorine gas

Correct Answer: 40% formaldehyde vapour ✔

Option A: Lipids

Option B: Carbohydrates

Option C: Inorganic salts

Option D: Nucleic acids

Correct Answer: Nucleic acids ✔

Option A: Disinfection kills all spores but sterilization does not

Option B: Sterilization kills all spores but disinfection does not

Option C: Sterilization involves chemicals and disinfection involves physical methods

Option D: Sterilization is easier to achieve

Correct Answer: Sterilization kills all spores but disinfection does not ✔

Option A: Simple media

Option B: Transport media

Option C: Enriched media

Option D: Differential media

Correct Answer: Enriched media ✔

Option A: Internal structures are differentiated in living cells

Option B: Internal structures are differentiated in dead cells

Option C: Internal metabolic activities can be observed

Option D: External capsule formation can be observed

Correct Answer: Internal structures are differentiated in living cells ✔

Option A: Lipid-polysaccharide complex

Option B: Protein compound

Option C: Lipoprotein

Option D: None

Correct Answer: Protein compound ✔

Option A: Lag

Option B: Exponential growth

Option C: Stationary phase

Option D: Decline

Correct Answer: Stationary phase ✔

Option A: Clothes

Option B: Instruments

Option C: Culture media

Option D: Needles

Correct Answer: Culture media ✔

Option A: Ig A

Option B: Ig G

Option C: Prostaglandins

Option D: CD4

Correct Answer: CD4 ✔

Option A: IgD

Option B: IgM

Option C: IgA

Option D: IgE

Correct Answer: IgE ✔

Option A: IgA

Option B: IgD

Option C: IgG

Option D: IgM

Correct Answer: IgG ✔

Option A: Wd miller

Option B: Leumenhoek

Option C: Robertson

Option D: Socranci

Correct Answer: Leumenhoek ✔

Option A: Ig M

Option B: Ig A

Option C: Ig G

Option D: Ig D

Correct Answer: Ig G ✔

Option A: Kill all pathogenic micro-organisms

Option B: Kill all non-pathogenic micro-organisms in the environment

Option C: Deactivate all pathogens not spores

Option D: Deactivate all spores and dill pathogenic organism

Correct Answer: Deactivate all spores and dill pathogenic organism ✔

Option A: B lymphocytes

Option B: Erythrocytes

Option C: T lymphocytes

Option D: Antigen presenting cells (APC

Correct Answer: Erythrocytes ✔

Option A: C3

Option B: C5

Option C: C2

Option D: Protein B

Correct Answer: C3 ✔

Option A: Actinomyces israelii

Option B: Candida albicans

Option C: Mycobacterium tuberculosis

Option D: Streptococcus mutan

Correct Answer: Mycobacterium tuberculosis ✔

Option A: Different refractive indices of object

Option B: Different reflective indices of object

Option C: Light scattering

Option D: Light attenuation

Correct Answer: Different refractive indices of object ✔

Option A: Ultra violet rays

Option B: Ultrasonic vibrations

Option C: Infrared rays

Option D: Gamma rays

Correct Answer: Gamma rays ✔

Option A: complete antigen molecule

Option B: Hapten

Option C: Immunogen

Option D: Smallest antigenic determinant

Correct Answer: Smallest antigenic determinant ✔

Option A: Growing bacteria in adverse environment

Option B: Growing bacteria in unconventional host

Option C: Serial passage in an experimental host

Option D: Repeated cultures in artificial media

Correct Answer: Serial passage in an experimental host ✔

Option A: Type I hypersensitivity

Option B: Type II hypersensitivity

Option C: Type III hypersensitivity

Option D: Type IV hypersensitivity

Correct Answer: Type III hypersensitivity ✔

Option A: dna

Option B: Ribosome

Option C: Mitochondria

Option D: Cell wall

Correct Answer: Mitochondria ✔