Microbiology MCQs

Option A: Acute infection

Option B: Carrier state

Option C: Prodromal phase

Option D: Convalescence

Correct Answer: Acute infection ✔

Option A: Virus

Option B: Bacteria

Option C: Spirochete

Option D: Anaerobe

Correct Answer: Virus ✔

Option A: New virus particle arises directly (by division) from preexisting viruses

Option B: Fall in to the general size range of 200-3000 angstrom unit

Option C: Contain equal proportions of protein, lipo polysaccharide and nucleic acids

Option D: Contain DNA but no RNA

Correct Answer: Fall in to the general size range of 200-3000 angstrom unit ✔

Option A: Cryptococcosis

Option B: Tuberculosis

Option C: Candidiasis

Option D: Aspergilosis

Correct Answer: Candidiasis ✔

Option A: Chick embryo

Option B: Blood agar

Option C: Guinea pigs

Option D: Cell culture

Correct Answer: Blood agar ✔

Option A: 1 week

Option B: 6 week

Option C: 3 months

Option D: 6 months

Correct Answer: 1 week ✔

Option A: The time lapse between the infection and detection of viral antibodies

Option B: The time lapse between the infection and development of AIDS

Option C: The time lapse between obtaining the sample and detection of virus in the lab

Option D: None of the above

Correct Answer: The time lapse between the infection and detection of viral antibodies ✔

Option A: Red blood cells

Option B: Fibroblasts

Option C: Helper T lymphocytes (CD4)

Option D: Mast cells

Correct Answer: Helper T lymphocytes (CD4) ✔

Option A: Apthous stomatitis

Option B: Tuberculosis

Option C: Pneumocystis carinii pneumonia

Option D: Herpetic gingivostomatitis

Correct Answer: Pneumocystis carinii pneumonia ✔

Option A: Orthomyxo virus, which is a DNA virus

Option B: Paramyxo virus, which is a RNA virus

Option C: Paramyxo virus, which is a DNA virus

Option D: Orthomyxo virus, which is a RNA virus

Correct Answer: Orthomyxo virus, which is a RNA virus ✔

Option A: Rheo

Option B: Retro

Option C: Rhabdo

Option D: Flavi

Correct Answer: Retro ✔

Option A: Pox virus

Option B: Measles virus

Option C: Hepatitis B virus

Option D: HIV

Correct Answer: Measles virus ✔

Option A: Rabies

Option B: Poliomyelitis

Option C: Influenza

Option D: Herpes

Correct Answer: Rabies ✔

Option A: 7-14 days

Option B: 1 months

Option C: 1-2 years

Option D: 3-6 months

Correct Answer: 7-14 days ✔

Option A: Composed largely proteins without any nucleic acid

Option B: Phase in which virus cannot be demonstrated in host cell

Option C: Viruses which are genetically deficient

Option D: Viral components may be synthesized but maturation & assembling is defective

Correct Answer: Composed largely proteins without any nucleic acid ✔

Option A: Japanese encephalitis

Option B: Kuru

Option C: Yellow fever

Option D: Rabies

Correct Answer: Japanese encephalitis ✔

Option A: Acquires its envelope from nuclear membrane

Option B: Acquires its envelope from nucleolar membrane

Option C: Acquires its envelope from cytoplasmi membrane

Option D: None of the above

Correct Answer: Acquires its envelope from nuclear membrane ✔

Option A: Enzymes

Option B: Protein coat

Option C: Polysaccharide

Option D: Lipids

Correct Answer: Protein coat ✔

Option A: Nucleotides

Option B: Phospholipids

Option C: Scleroproteins

Option D: Nucleoproteins

Correct Answer: Nucleoproteins ✔

Option A: Boiling

Option B: Ethanol

Option C: Cidex

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Gastrointestinal tract

Option B: Nasal mucosa

Option C: Lung

Option D: Skin

Correct Answer: Gastrointestinal tract ✔

Option A: Simple carriers

Option B: Late convalescence

Option C: High infectivity

Option D: Carrier status

Correct Answer: High infectivity ✔

Option A: Carcinoma Cervix

Option B: Hepatoma

Option C: Nasopharyngeal carcinoma

Option D: Lymphoma

Correct Answer: Hepatoma ✔

Option A: Extracellular infectious virus particle

Option B: Smallest virus

Option C: A smallest particle similar to virus

Option D: None of the above

Correct Answer: Extracellular infectious virus particle ✔

Option A: Viral interference

Option B: Mutation

Option C: Supervision

Option D: Permutation

Correct Answer: Viral interference ✔

Option A: Bunya virus

Option B: Reo virus

Option C: Calci virus

Option D: Rhabdo virus

Correct Answer: Reo virus ✔

Option A: HBCAg

Option B: HBeAg

Option C: Anti-HBC

Option D: Anti-HBS

Correct Answer: HBeAg ✔

Option A: HBs Ag

Option B: IgM anti – HBc

Option C: Anti HBs

Option D: None of the above

Correct Answer: B. IgM anti – HBc ✔

Option A: Give inmunoglobulins for passive immunity

Option B: Give ARV

Option C: Immediately stitch wound under antibiotic coverage

Option D: Immediately wash wound with soap and water

Correct Answer: Immediately stitch wound under antibiotic coverage ✔

Option A: Measles virus

Option B: Herpes Virus

Option C: Papavo virus

Option D: Adeno virus

Correct Answer: Measles virus ✔

Option A: Immunodeficiency virus

Option B: Influenza

Option C: Polio virus

Option D: Hepatitis virus

Correct Answer: Immunodeficiency virus ✔

Option A: Type 6,12,18

Option B: 16,18,31

Option C: 6,8,11

Option D: 3,10,19

Correct Answer: 16,18,31 ✔

Option A: Interferon production

Option B: Toxin production

Option C: Lymphocytes production

Option D: Neutrophils production

Correct Answer: Interferon production ✔

Option A: RNA -DNA-RNA

Option B: RNA-DNA

Option C: DNA-RNA

Option D: DNA-RNA-DNA

Correct Answer: RNA -DNA-RNA ✔

Option A: Human Herpes Virus 3

Option B: Human Herpes Virus 1

Option C: Human Herpes Virus 8

Option D: Human Herpes Virus 4

Correct Answer: Human Herpes Virus 4 ✔

Option A: 2 weeks

Option B: 4 weeks

Option C: 9 weeks

Option D: 12 weeks

Correct Answer: 4 weeks ✔

Option A: ELISA

Option B: Western blot

Option C: P24 antigen

Option D: Lymph node biopsy

Correct Answer: P24 antigen ✔

Option A: Resistance to hepatitis B

Option B: Acute infection

Option C: Good prognosis

Option D: Hepatocellular carcinoma

Correct Answer: Good prognosis ✔

Option A: Simple carriers

Option B: Late convalescence

Option C: High infectivity

Option D: Carrier status

Correct Answer: High infectivity ✔

Option A: HBV

Option B: HCV

Option C: HDV

Option D: HEV

Correct Answer: HEV ✔

Option A: Measles

Option B: Mumps

Option C: Rubella

Option D: Hepatitis B

Correct Answer: Hepatitis B ✔

Option A: Flavi virus

Option B: Togaviridae

Option C: Reoviridae

Option D: Rhabdoviridae

Correct Answer: Flavi virus ✔

Option A: It can be detected during the window period

Option B: Free P24 antigen disappears after the appearance of IgM response to it:

Option C: Virus load parallel P24 titre

Option D: It remains during asymptomatic phase

Correct Answer: It remains during asymptomatic phase ✔

Option A: Herpes Simplex

Option B: Mumps

Option C: Rubella

Option D: Papilloma

Correct Answer: Rubella ✔

Option A: Chicken pox

Option B: Rabies

Option C: Small pox

Option D: Measles

Correct Answer: Measles ✔

Option A: Ribonuclease

Option B: Reverse transcriptase

Option C: DNA polymerase

Option D: Restriction endonuclease

Correct Answer: Reverse transcriptase ✔

Option A: Virus

Option B: Bacteria

Option C: Parasite

Option D: Bacteria superadded on virus

Correct Answer: Virus ✔

Option A: Protein synthesis

Option B: DNA/RNA replication

Option C: When virus enters the cell

Option D: Uncoating of the virus proteins capsule

Correct Answer: Protein synthesis ✔

Option A: Mycobacteria

Option B: Spore

Option C: Prions

Option D: Coccidia

Correct Answer: Prions ✔

Option A: Echo virus

Option B: Hepatitis C

Option C: HIV

Option D: Orthomyxovirus

Correct Answer: Orthomyxovirus ✔

Option A: Verruca vulgaris

Option B: Focal epithelial hyperplasia

Option C: Condyloma acuminatum

Option D: Keratoacanthoma

Correct Answer: Keratoacanthoma ✔

Option A: Readily inactivated by autoclave at 121 C

Option B: Evokes strong immunogenic reaction

Option C: Sensitive to most chemical sterilization

Option D: Contains DNA/ RNA

Correct Answer: Readily inactivated by autoclave at 121 C ✔

Option A: Hepatitis B virus

Option B: Hepatitis C virus

Option C: Hepatitis E virus

Option D: Hepatitis A virus

Correct Answer: Hepatitis E virus ✔

Option A: Sialoperoxidase

Option B: Secretory IgA

Option C: Salivary leukocyte proteinase inhibitor

Option D: Histidine rich proteins

Correct Answer: Salivary leukocyte proteinase inhibitor ✔

Option A: Inactive carrier

Option B: Healthy carrier

Option C: Convalscent carrier

Option D: Paradoxical carrier

Correct Answer: Convalscent carrier ✔

Option A: Saubourd’s agar

Option B: Rogosa medium

Option C: Nonembryonated egg

Option D: Embryonated egg

Correct Answer: Embryonated egg ✔

Option A: Above 600

Option B: Between 1000-2000

Option C: Below 200

Option D: Above 2000

Correct Answer: Below 200 ✔

Option A: Hanta virus pulmonary syndrome is caused by inhalation of rodent urine and faces

Option B: Kyanasur forest disease is caused by bite of wild animal

Option C: Lyssa virus is transmitted by ticks

Option D: None of the above

Correct Answer: Hanta virus pulmonary syndrome is caused by inhalation of rodent urine and faces ✔

Option A: Rubella

Option B: Rubeola

Option C: Herpes simplex

Option D: Herpetic ginglvostomatitis

Correct Answer: Rubella ✔

Option A: IgM antibodies in serum

Option B: Isolation form stool

Option C: Culture from blood

Option D: Isolation from bile

Correct Answer: IgM antibodies in serum ✔

Option A: Cowpox

Option B: Molluscum contagiosum

Option C: Small pox

Option D: chicken pox

Correct Answer: chicken pox ✔

Option A: Surface antigen

Option B: Surface antibody

Option C: Core antigen

Option D: Core antibody

Correct Answer: Surface antigen ✔

Option A: Less sensitive less specific

Option B: More sensitive, more specific

Option C: Less sensitive, more specific

Option D: More sensitive, less specific

Correct Answer: More sensitive, less specific ✔

Option A: Adeno

Option B: Hepatitis

Option C: EB virus

Option D: Parvo virus

Correct Answer: Parvo virus ✔

Option A: CD8 T-cells

Option B: CD4 T-cells

Option C: B – cells

Option D: NK – cells

Correct Answer: CD4 T-cells ✔

Option A: HBc Ag

Option B: HBs Ag

Option C: Hbe Ag

Option D: HBx Ag

Correct Answer: HBx Ag ✔

Option A: Hepatitis A

Option B: Hepatitis B

Option C: CMV

Option D: EBV

Correct Answer: CMV ✔

Option A: Nasopharyngeal carcinoma

Option B: Burkitt’s lymphoma

Option C: Hepatoma

Option D: Infectious mononucleosis

Correct Answer: Hepatoma ✔

Option A: Carcinoma

Option B: Kaposi’s sarcoma

Option C: Melanoma

Option D: Ewing’s sarcoma

Correct Answer: B. Kaposi’s sarcoma ✔

Option A: Helper T lymphocytes

Option B: Natural killer cells

Option C: Plasma cells

Option D: Macrophages

Correct Answer: Helper T lymphocytes ✔

Option A: Picorna viruses

Option B: Herpes viruses

Option C: Hepadana viruses

Option D: Flavi viruses

Correct Answer: Flavi viruses ✔

Option A: Tissue culture

Option B: Embryonated eggs

Option C: Animals

Option D: Chemically defined media

Correct Answer: Chemically defined media ✔

Option A: ELISA IS – ve

Option B: Western Blot is – ve

Option C: Both are – ve

Option D: PCR is – ve

Correct Answer: C. Both are – ve ✔

Option A: Identification of viral disease

Option B: To separate specific clone of virus

Option C: To maintain certain viral culture

Option D: To prepare vaccines

Correct Answer: Identification of viral disease ✔

Option A: Anopheles

Option B: Aedes

Option C: Culex

Option D: Mansoni

Correct Answer: Aedes ✔

Option A: Capsomere

Option B: Capsid

Option C: Nucleocapsid

Option D: Envelope

Correct Answer: Capsid ✔

Option A: EB virus

Option B: Papilloma virus

Option C: Herpes simplex virus

Option D: Varicella zoster virus

Correct Answer: Herpes simplex virus ✔

Option A: DNA virus

Option B: Attacks CD4 cells

Option C: Macrophages are the reservoir

Option D: Decrease CD4 count in late stages

Correct Answer: DNA virus ✔

Option A: Carcinoma of nasopharynx

Option B: Papilloma

Option C: Infectious mononucleosis

Option D: Burkitt’s lymphoma

Correct Answer: Papilloma ✔

Option A: HB Ag

Option B: HBs AG

Option C: HBV

Option D: None of the above

Correct Answer: HBs AG ✔

Option A: Virus isolation

Option B: Western blot followed by ELISA

Option C: ELISA followed by western blot technique

Option D: Polymers chain reaction

Correct Answer: ELISA followed by western blot technique ✔

Option A: Hepatitis C

Option B: Hepatitis D

Option C: Hepatitis E

Option D: Hepatitis F

Correct Answer: Hepatitis E ✔

Option A: Antibody of HBs Ag is associated with resistance to infection

Option B: Antibody to HBC is not protective

Option C: Highest titres of anti HBC are found in persistent carriers of HBs Ag

Option D: CMI disappears soon after recover

Correct Answer: Antibody of HBs Ag is associated with resistance to infection ✔

Option A: Cytopathic changes in culture cells

Option B: Presence of viral protein in the infected monolayer

Option C: Haemagglutination test

Option D: Haemagglutination inhibition test

Correct Answer: Cytopathic changes in culture cells ✔

Option A: HBV

Option B: IgG anti HAV

Option C: Delta Virus

Option D: HBC Ag

Correct Answer: HBV ✔

Option A: Failure to thrive

Option B: Have infections

Option C: 50% chances to have AIDS

Option D: All are true

Correct Answer: 50% chances to have AIDS ✔

Option A: 24 Hrs

Option B: 3-4 days

Option C: 2 weeks

Option D: 10 days

Correct Answer: 3-4 days ✔

Option A: Cytotropic

Option B: Dermatotropic

Option C: Chromophilic

Option D: Neurotropic

Correct Answer: Neurotropic ✔

Option A: Presence of either DNA or RNA

Option B: Simple structure

Option C: Complex multiplication

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Hepatitis B virus

Option B: Hepatitis C virus

Option C: Hepatitis D virus

Option D: Hepatitis E virus

Correct Answer: Hepatitis E virus ✔

Option A: ELISA

Option B: Immunodot

Option C: RIPA

Option D: Western Blot

Correct Answer: Western Blot ✔

Option A: Robert koch

Option B: Twort and d’herelle

Option C: Menkin

Option D: Metchinkoff

Correct Answer: B. Twort and d’herelle ✔

Option A: Hepatitis B surface antigen in acute hepatitis

Option B: AIDS

Option C: Chronic leukemia

Option D: Basal cell carcinoma

Correct Answer: Hepatitis B surface antigen in acute hepatitis ✔

Option A: in a week and reach a peak in 3 weeks

Option B: only after one year

Option C: no antibodies are present in primary HSV

Option D: antibodies are present in recurrent and chronic apthous stomatitis

Correct Answer: in a week and reach a peak in 3 weeks ✔

Option A: 24 hours

Option B: 6 hours

Option C: 12 hours

Option D: 3 months

Correct Answer: 6 hours ✔

Option A: Chocolate agar

Option B: Robertoson’s cooked-meat broth

Option C: Chorio allantoic membrane

Option D: Sabourad’s agar

Correct Answer: Chorio allantoic membrane ✔

Option A: HIV

Option B: Hepatitis C

Option C: Hepatitis B

Option D: Hepatitis E

Correct Answer: Hepatitis E ✔

Option A: Saliva

Option B: Needle prick injury

Option C: Blood transmission

Option D: Sexual intercourse

Correct Answer: Saliva ✔

Option A: exotoxin production

Option B: lecithinase production

Option C: hypersensitivity

Option D: Coagulase production

Correct Answer: hypersensitivity ✔

Option A: Penicillium

Option B: Aspergillus

Option C: Mucor

Option D: Rhizopus

Correct Answer: Aspergillus ✔