5601. Which of the following microbial cell is most resistant to antiseptics & disinfectants ?
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A. Mycobacteria

B. Spore

C. Coccidia

D. Prions
5602. The term animalcules to oral microorganisms is given by__________________?
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A. Robertson

B. Leumenhoek

C. Socranci

D. Wd miller

5603. Who first introduced solid media_______________?
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A. Louis pasteur

B. Robert koch

C. Hensen

D. Ogston

5604. Prions true is____________?
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A. Evokes strong immunogenic reaction

B. Contains DNA/ RNA

C. Readily inactivated by autoclave at 121 C

D. Sensitive to most chemical sterilization

5605. Most fungi of medical importance belongs to__________________?
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A. Ascomycetes

B. Basidiomycetes

C. Zygomycetes

D. Deuteromycetes
5606. Lesions caused by Entameoba histolytica predominantly involve________________?
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A. Jejunum and Ileum

B. Caecum and large intestine

C. Stomach

D. Duodenum

5607. Sterilization of liquid paraffin is done by______________?
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A. Autoclaving

B. Hot air oven

C. UV-Radiation

D. Inspissation

5608. The mechanism by which most fungi caused disease is ________________?
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A. hypersensitivity

B. Coagulase production

C. exotoxin production

D. lecithinase production

5609. Highest incidence of anemia in the tropics is due to______________?
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A. Guinea worm

B. Thread worm

C. Hook worm

D. Ascaris

5610. The Dane particle is the______________?
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A. Delta Virus

B. HBC Ag

C. HBV

D. IgG anti HAV

5611. The HIV virus can be destroyed invitro by which of the following_____________?
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A. Ethanol

B. Boiling

C. Cidex

D. All of the above
5612. Pseudohphae are seen in____________?
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A. Aspergillus

B. Osporium

C. Alternaria

D. Candida albicans
5613. The culture media for fungus is__________________?
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A. NNN medium

B. Chocolate agar medium

C. Sabourauds medium

D. Tellurite medium

5614. The cell wall deficient bacteria_______________?
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A. Chlamydiae

B. Rickettsiae

C. Ehrlichiae

D. Mycoplasma
5615. A type of immediately occuring reaction in which antigens combine with antibodies already attached to the surface of mast cells and basophils is called_____________?
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A. Type I hypersensitivity

B. Type IV hypersensitivity

C. Type III hypersensitivity

D. Type II hypersensitivity

5616. Reynolds Braude phenomenon is shown by ___________________?
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A. Cryptococcus

B. Candida albicans

C. Aspergillus

D. Mucor

5617. Schuffners dots are seen in infection due to_______________?
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A. Plasmodium falciparum

B. Plasmodium malariae

C. Plasmodium vivax

D. Plasmodium ovale

5618. True about Toxaplasma gondi is, it is carried by_______________?
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A. Rats

B. Cow

C. Dogs

D. cats
5619. Out of the following hypersensitivity reactions, in which type a single dose of the antigen can act as both the sensitizing and shocking dose_______________?
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A. Arthus reaction

B. Anaphylaxis

C. Serum sickness

D. Contact dermatitis

5620. Immunoglobulin crossing placenta is_________________?
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A. Ig M

B. Ig A

C. Ig G

D. Ig D

5621. Which of the following viruses does not infect salivary glands ?
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A. HIV

B. Orthomyxovirus

C. Hepatitis C

D. Echo virus

5622. Function of Ig A is________________?
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A. Kills virus infected cells

B. Activates macrophages

C. Circulating antibody

D. Acts as a mucosal barrier for infection
5623. Opportunistic infection is caused by___________________?
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A. Mucor

B. Penicillium

C. Aspergillus

D. All of the above
5624. Which stage of plasmodium vivax is infective to mosquito______________?
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A. Zygote

B. Gametocyte

C. Merozoite

D. Sporozoite

5625. Dematophytes are fungi infecting________________?
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A. Nails, hair and skin

B. Systemic organs

C. Subcutaneous tissue

D. Superficial skin and deep tissue

5626. A woman with infertility receives an ovary transplant from her sister who is an identical Twin. What type of graft it is ?
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A. Isograft

B. Allograft

C. Xenograft

D. Autograft

5627. Portal of entry of poliovirus in mainly_______________?
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A. Nasal mucosa

B. Gastrointestinal tract

C. Lung

D. Skin

5628. Most sensitive test for antigen detection is_______________?
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A. ELISA

B. Passive hemaglutination

C. Immunoflourescence

D. Radioimmuno Assay
5629. Viruses can be isolated from clinical samples by cultivation in the following except_______________?
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A. Chemically defined media

B. Animals

C. Embryonated eggs

D. Tissue culture

5630. All of the following infections may be transmitted be dental instruments except____________?
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A. HIV

B. Hepatitis E

C. Hepatitis B

D. Hepatitis C

5631. Following are the characteristics of Cryptococcus neoformans EXCEPT________________?
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A. Basidiomycetes yeast

B. Melanin production related to virulence

C. Causes meningitis

D. Noncapsulated fungus infecting man
5632. Which of the following correctly indicates the infectivity of hepatitis virus in human ?
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A. HBeAg

B. Anti-HBS

C. Anti-HBC

D. HBCAg

5633. All are oncogenic except________________?
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A. EB virus

B. Varicella zoster virus

C. Papilloma virus

D. Herpes simplex virus
5634. Phase contrast microscopy is based on principle of__________________?
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A. Different refractive indices of object

B. Light attenuation

C. Light scattering

D. Different reflective indices of object

5635. Virus is cultured in_______________?
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A. Nonembryonated egg

B. Saubourds agar

C. Embryonated egg

D. Rogosa medium

5636. One virus particle prevents multiplication of 2nd virus. This phenomena is____________?
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A. Permutation

B. Supervision

C. Mutation

D. Viral interference
5637. The following statement is true regarding fungal infection__________________?
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A. Rhinosporidium causes deep infection in man

B. Dermatophyte infection are exclusively man to animal

C. Candida infection is usually endogenous

D. albicans is not pathogenic to lab animals

5638. DNA covering material in a virus is called as________________?
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A. Capsomere

B. Capsid

C. Nucleocapsid

D. Envelope

5639. The Process of attenuation can be achieved by all except___________________?
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A. Growing bacteria in adverse environment

B. Growing bacteria in unconventional host

C. Serial passage in an experimental host

D. Repeated cultures in artificial media

5640. Dengue Hemorrhagic fever is caused by_____________?
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A. Bacteria

B. Parasite

C. Virus

D. Bacteria superadded on virus

5641. Most of the drug resistances occurs due to_____________?
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A. Transformation

B. Transduction

C. conjugation

D. Mutation

5642. The world german measles is applied for_____________?
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A. Herpes simplex

B. Herpetic ginglvostomatitis

C. Rubeola

D. Rubella
5643. Rapid evaluation of fungal hyphae/spores can be achieved with_______________?
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A. KOH wet mount

B. Grocott Gomori Methenamine silver

C. Peri-iodic Acid Schiff

D. Hematoxylin and Eosin

5644. Moist heat kills all of the following EXCEPT_______________?
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A. Coxiella burnetti

B. Mycobacterium

C. Brucella

D. Salmonella

5645. Group A carbohydrate of Str. pyogenes cross reacts with human_________________?
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A. Cardiac valves

B. Vascular intima

C. Synovial fluid

D. Myocardium

5646. All are true about widel test except________________________?
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A. H antigen cannot differentiate between subtypes

B. High titre value in a single widal test is not confirmative

C. O antibodiest last longer and hence is not indicative of recent infection

D. Base lines differ depending on the endemicity of the disease

5647. A 6 year old boy comes with abdominal pain, vomiting after consuming mild products within 6 hours. The most likely organism responsible is______________?
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A. B.Cereus

B. Salmonella

C. Clostridium botulinum

D. Staph. aureus
5648. Growth factor needed for Salmonella_________________?
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A. B-12

B. Citrate

C. Niacin

D. Tryptophan
5649. compared with autoclave, use of a dry heat over for sterilization has the following disadvantages______________?
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A. Causes sharp instruments to dull

B. Time-consuming

C. Causes instruments to rust

D. Less effective

5650. VDRL is a________________?
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A. Tube agglutination test

B. Latex agglutination test

C. Tube flocculation test

D. Slide flocculation test