General Microbiology MCQs

Option A: Gamma-Rays

Option B: X-Rays

Option C: Autoclaving

Option D: Boiling

Correct Answer: Gamma-Rays ✔

Option A: Bile solubility

Option B: Optochin sensitivity

Option C: Bacitracin sensitivity

Option D: Cataslase positive

Correct Answer: Bacitracin sensitivity ✔

Option A: Bacteria

Option B: Viruses

Option C: Spore formers

Option D: Fungus

Correct Answer: Spore formers ✔

Option A: Escherichia Coli

Option B: Staphylococci

Option C: Spirochetes

Option D: Mycoplasma

Correct Answer: Mycoplasma ✔

Option A: IgG

Option B: IgA

Option C: IgM

Option D: IgD

Correct Answer: IgG ✔

Option A: Antigen recognition by B cells

Option B: Localization protection in external secretion

Option C: Compliment activation

Option D: Reagin activity

Correct Answer: Antigen recognition by B cells ✔

Option A: One Fc fragment and two Fab fragments

Option B: One Fc fragment and four Fab fragments

Option C: Two Fc fragments and two Fab fragments

Option D: Two Fc fragment and one Fab fragment

Correct Answer: One Fc fragment and two Fab fragments ✔

Option A: Robert Koch

Option B: Joeph Lister

Option C: John Hunter

Option D: Alexander flemings

Correct Answer: Joeph Lister ✔

Option A: Autoclaving

Option B: Hot air oven

Option C: Inspissation

Option D: Tyndallization

Correct Answer: Hot air oven ✔

Option A: Liquid paraffin → Dry heat

Option B: Glass syringes → Boiling at 169°C for 60 min

Option C: Flash pasteurization of milk → 72° C for 15 seconds, followed quickly by rapid cooling to 13°C for lower

Option D: Vaccines → Ethylene oxide

Correct Answer: Vaccines → Ethylene oxide ✔

Option A: Brucella

Option B: Mycobacterium

Option C: Salmonella

Option D: Coxiella burnetti

Correct Answer: Coxiella burnetti ✔

Option A: Region I

Option B: Region II

Option C: Region III

Option D: Boivin antigen

Correct Answer: Region I ✔

Option A: Payers patch

Option B: Lymph node

Option C: Thymus

Option D: Busra of Fabricius

Correct Answer: Thymus ✔

Option A: MHC I

Option B: MHC II

Option C: MHC III

Option D: B-cell receptor

Correct Answer: MHC I ✔

Option A: Helper T cells

Option B: Helper B cells

Option C: Monocytes

Option D: Macrophages

Correct Answer: Macrophages ✔

Option A: Type I

Option B: Type II

Option C: Type III

Option D: Type IV

Correct Answer: Type I ✔

Option A: B-cells

Option B: Active T cells

Option C: NK cells

Option D: Plasma cells

Correct Answer: Active T cells ✔

Option A: 17 D

Option B: Salk

Option C: Hepatitis

Option D: HDCV

Correct Answer: HDCV ✔

Option A: Cell wall of Gram positive organisms

Option B: Cell wall of Gram negative organisms

Option C: Cytoplasm of Gram positive organisms

Option D: Cytoplasm of Gram negative organisms

Correct Answer: Cell wall of Gram positive organisms ✔

Option A: Transfer of antibody from mother to child is through colostrum and acquired passive immunity naturally

Option B: Injection of antibodies (Hepatitis) is artificially acquired passive immunity

Option C: Antigenic stimulus given by vaccine (polio) is artificial active immunity

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Sabourauds medium

Option B: Agar – agar

Option C: Lowenstein Jensen medium

Option D: Loefflers serum slope

Correct Answer: Lowenstein Jensen medium ✔

Option A: Using chemical indicator strip or pouch

Option B: Recording a temperature/ pressure readings from sterilizer guage

Option C: Using a bacterial spore test

Option D: Determining the ability of a sterilizer to kill the hepatitis B virus

Correct Answer: Using a bacterial spore test ✔

Option A: IgG1

Option B: IgG2

Option C: IgG3

Option D: IgG4

Correct Answer: IgG1 ✔

Option A: Autoclaving

Option B: Hot air oven

Option C: Incineration

Option D: Formaldehyde

Correct Answer: Hot air oven ✔

Option A: Production of interferon

Option B: Lymphokine production

Option C: Rosette formation

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Same as epitopes

Option B: Carrier required for specific antibody production

Option C: High molecular protein

Option D: None of the above

Correct Answer: Carrier required for specific antibody production ✔

Option A: B lymphocytes

Option B: T lymphocytes

Option C: Monocytes

Option D: Histiocytes

Correct Answer: T lymphocytes ✔

Option A: Slide flocculation test

Option B: Tube flocculation test

Option C: Tube agglutination test

Option D: Latex agglutination test

Correct Answer: Slide flocculation test ✔

Option A: T-cells

Option B: B-cells

Option C: Lymph nodes

Option D: Mucosal epithelium

Correct Answer: Mucosal epithelium ✔

Option A: 2 light, 2 heavy chains

Option B: 1 heavy, 2 light chains

Option C: 1 light, 1 heavy chain

Option D: 3 light, 1 heavy chain

Correct Answer: 2 light, 2 heavy chains ✔

Option A: Clone

Option B: Epitope

Option C: Idiotope

Option D: Paratope

Correct Answer: Epitope ✔

Option A: Opsonisation

Option B: Chemotaxis

Option C: De coding

Option D: CFT

Correct Answer: Opsonisation ✔

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 ✔