MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 475 Mcqs, each offering curated multiple-choice questions to sharpen your Medical Subjects knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
The spirochete which is associated with fusospirochetosis is______________? |
| A. | Treponema pallidum |
| B. | Treponjema pertenue |
| C. | Borrelia burgdorferi |
| D. | Borrelia vincenti |
| Answer» E. | |
| 102. |
The specific test for Treponema pallidum is___________? |
| A. | VDRL |
| B. | Kahn’s test |
| C. | TPHA |
| D. | Widal test |
| Answer» D. Widal test | |
| 103. |
The small nonparticulate protein leading to enhanced replication of HBV as well as HIV is______________? |
| A. | HBc Ag |
| B. | HBs Ag |
| C. | Hbe Ag |
| D. | HBx Ag |
| Answer» E. | |
| 104. |
The single most important laboratory test for determining the virulence of staphylococci is___________? |
| A. | Mannitol fermentation |
| B. | Hemolysis of sheep erythrocytes |
| C. | Detection of coagulase |
| D. | The catalase test |
| Answer» D. The catalase test | |
| 105. |
The serum concentration of which of the following human IgG subclass is maximum ? |
| A. | IgG1 |
| B. | IgG2 |
| C. | IgG3 |
| D. | IgG4 |
| Answer» B. IgG2 | |
| 106. |
The reaginic antibody is________________? |
| A. | IgG |
| B. | IgA |
| C. | IgD |
| D. | IgE |
| Answer» E. | |
| 107. |
The prototype of Type II hypersensitivity reaction is__________________? |
| A. | Arthus reaction |
| B. | SLE |
| C. | Auto immune hemolytic anemia |
| D. | Contact dermatitis |
| Answer» D. Contact dermatitis | |
| 108. |
The protective effects breast milk are known to be associated with______________? |
| A. | IgM antibodies |
| B. | Lysozyme |
| C. | Mast cells |
| D. | IgA antibodies |
| Answer» E. | |
| 109. |
The Process of attenuation can be achieved by all except___________________? |
| 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 |
| Answer» D. Repeated cultures in artificial media | |
| 110. |
The presence of Which of the following factors in viruses makes protective vaccines a possibility ? |
| A. | Enzymes |
| B. | Protein coat |
| C. | Polysaccharide |
| D. | Lipids |
| Answer» C. Polysaccharide | |
| 111. |
The predominant immunoglobulin in saliva is_______________? |
| A. | IgA |
| B. | IgD |
| C. | IgE |
| D. | IgG |
| Answer» B. IgD | |
| 112. |
The overall effect of HIV is to gradually impair the immune system by interference with______________? |
| A. | Helper T lymphocytes |
| B. | Natural killer cells |
| C. | Plasma cells |
| D. | Macrophages |
| Answer» B. Natural killer cells | |
| 113. |
The optimal time and temperature required for sterilization in an autoclave is___________________? |
| A. | 140°C x 2 hrs. x 10 lbs pr. |
| B. | 121°F x 15 mts. x 15 lbs pr. |
| C. | 121°F x 15 sec. x 15 lbs pr. |
| D. | 121°C 15 mts. x 15 lbs pr. |
| Answer» E. | |
| 114. |
The only virus, which has double stranded RNA, is______________? |
| A. | Bunya virus |
| B. | Reo virus |
| C. | Calci virus |
| D. | Rhabdo virus |
| Answer» C. Calci virus | |
| 115. |
The most primitive mode of gene transfer occurs by____________? |
| A. | Transduction |
| B. | Translation |
| C. | Cell fusion |
| D. | Conjugation |
| Answer» E. | |
| 116. |
The most frequently encountered clostridial species in gas gangrene is______________? |
| A. | Clostridium botulinum |
| B. | Clostridium welchii |
| C. | Clostridium tetani |
| D. | Clostridium difficile |
| Answer» C. Clostridium tetani | |
| 117. |
The most common site where organisms are present in a typhoid carrier is______________? |
| A. | Spleen |
| B. | Gall Bladder |
| C. | Liver |
| D. | Salivary gland |
| Answer» C. Liver | |
| 118. |
The most common pathogens responsible for nosocomial pneumonias in the ICU are______________? |
| A. | Gram positive organisms |
| B. | Gram negative organisms |
| C. | Mycoplasma |
| D. | Virus infections |
| Answer» C. Mycoplasma | |
| 119. |
The minimum time required for the sterilization of surgical instruments by moist heat at 134°C is__________________? |
| A. | 3 minutes |
| B. | 15 minutes |
| C. | 30 minutes |
| D. | 60 minutes |
| Answer» B. 15 minutes | |
| 120. |
The medium of choice for growing most fungi is_______________? |
| A. | Blood agar |
| B. | Tissue culture |
| C. | Sabouraud’s agar |
| D. | Thioglycollate medium |
| Answer» D. Thioglycollate medium | |
| 121. |
The medium of choice for culturing yeast from of dimorphic fungi is_________________? |
| A. | Brain – heart infusion |
| B. | Sabouraud’s |
| C. | Sabouraud’s plus antibiotics |
| D. | Any medium incubated at 35-37°C |
| Answer» D. Any medium incubated at 35-37°C | |
| 122. |
The mechanism of genetic transfer where a phage serves as a vehicle is_______________? |
| A. | Transformation |
| B. | Translation |
| C. | Conjugation |
| D. | Lysogeny |
| Answer» E. | |
| 123. |
The mechanism by which most fungi caused disease is ________________? |
| A. | exotoxin production |
| B. | lecithinase production |
| C. | hypersensitivity |
| D. | Coagulase production |
| Answer» D. Coagulase production | |
| 124. |
The Manufacturing unit of surgical needle & sutures are sterilized by ________________? |
| A. | Gamma-Rays |
| B. | X-Rays |
| C. | Autoclaving |
| D. | Boiling |
| Answer» B. X-Rays | |
| 125. |
The major intestinal pathogens which are non-lactose fermenters are_________________? |
| A. | Salmonella |
| B. | Klebsiella |
| C. | Escherichia |
| D. | Paracolons |
| Answer» B. Klebsiella | |
| 126. |
The major antiseptic value of soap lies in its ability to_____________? |
| A. | Kill mircobes |
| B. | Remove microbes |
| C. | Inhibit microbial growth |
| D. | Dehydrate microbial cells |
| Answer» C. Inhibit microbial growth | |
| 127. |
The killer cells are associated with immunologic response___________________? |
| A. | Type I |
| B. | Type II |
| C. | Type III |
| D. | Type IV |
| Answer» C. Type III | |
| 128. |
The key cell types involved in the acquired immunity include all EXCEPT________________? |
| A. | B lymphocytes |
| B. | Erythrocytes |
| C. | T lymphocytes |
| D. | Antigen presenting cells (APC |
| Answer» C. T lymphocytes | |
| 129. |
The interaction of antigens with antibodies on the surface of a mast cel leads to degranulation and anaphylaxis. The mast cell granules produce anaphylaxis because they contain________________? |
| A. | Lysosomes |
| B. | Proteolytic enzymes |
| C. | Lymphotoxins |
| D. | Vasoactive mediators |
| Answer» E. | |
| 130. |
The inflammatory type of tinea capitis with superadded secondary bacterial infection leading to a painful, circumscribed, boggy, and indurated lesion, is called_____________? |
| A. | Kerison |
| B. | Alopecia areata |
| C. | Pilomatrixoma |
| D. | Tenia incognito |
| Answer» B. Alopecia areata | |
| 131. |
The immediate type of hypersensitivity in which histamine doses not play a major role is______________? |
| A. | Urticaria |
| B. | Asthma |
| C. | Anaphylaxis |
| D. | Arthus reaction |
| Answer» E. | |
| 132. |
The Ig found in exocrine secretions is_____________? |
| A. | IgG |
| B. | IgD |
| C. | IgM |
| D. | IgA |
| Answer» E. | |
| 133. |
The HIV virus can be destroyed invitro by which of the following_____________? |
| A. | Boiling |
| B. | Ethanol |
| C. | Cidex |
| D. | All of the above |
| Answer» E. | |
| 134. |
The genetic ability of a bacterium to grow in the presence of several antibiotics is passed in vivo from one bacterium to another by_____________? |
| A. | Conjugation |
| B. | Rarefaction |
| C. | Transduction |
| D. | Transformation |
| Answer» B. Rarefaction | |
| 135. |
The function of IgD is______________? |
| A. | Antigen recognition by B cells |
| B. | Localization protection in external secretion |
| C. | Compliment activation |
| D. | Reagin activity |
| Answer» B. Localization protection in external secretion | |
| 136. |
The following statement is true regarding fungal infection__________________? |
| A. | Dermatophyte infection are exclusively man to animal |
| B. | Rhinosporidium causes deep infection in man |
| C. | albicans is not pathogenic to lab animals |
| D. | Candida infection is usually endogenous |
| Answer» E. | |
| 137. |
The following is not true of Candida albicans______________? |
| A. | Yeast like fungus |
| B. | Forms Chlamydospores |
| C. | Blastomeres seen in isolates |
| D. | Seen in immunocompromised and causes meningitis in them |
| Answer» D. Seen in immunocompromised and causes meningitis in them | |
| 138. |
The following immunoglobulin is not known to fix complement_________________? |
| A. | IgE |
| B. | IgM |
| C. | IgA |
| D. | IgG |
| Answer» B. IgM | |
| 139. |
The following hepatitis virus is transmitted by faeco-oral route________________? |
| A. | Hepatitis B virus |
| B. | Hepatitis C virus |
| C. | Hepatitis D virus |
| D. | Hepatitis E virus |
| Answer» E. | |
| 140. |
The following are applicable to bacterial genoms except________________? |
| A. | It is composed of DNA |
| B. | It doe not contain histones |
| C. | It is circular |
| D. | Its DNA has both introns and extrons |
| Answer» E. | |
| 141. |
The facultative anaerobic bacteria are those who are_______________? |
| A. | Unable to grow in the presence of oxygen |
| B. | Unable to grow in the absence of oxygen |
| C. | Able to grow in the presence of carbon dioxide |
| D. | Able to grow in the presence of absence of oxygen |
| Answer» E. | |
| 142. |
The exact part of the antigen that reacts with the immune system is called as_____________? |
| A. | Clone |
| B. | Epitope |
| C. | Idiotope |
| D. | Paratope |
| Answer» C. Idiotope | |
| 143. |
The earliest identifiable cells of T-Cell lineage during maturation are_______________? |
| A. | CD7+ Pro-T-Cells |
| B. | CD5+ Pre-T-Cells |
| C. | CD8+ Pro-T-Cells |
| D. | CD8+ Pre-T-Cells |
| Answer» B. CD5+ Pre-T-Cells | |
| 144. |
The distinguishing characteristic of a positive delayed type hypersensitivity skin test is______________? |
| A. | Erythema |
| B. | Necrosis |
| C. | Induration |
| D. | Vasculitis |
| Answer» B. Necrosis | |
| 145. |
The difference between sterilization and disinfection is that_______________? |
| A. | Disinfection kills all spores but sterilization does not |
| B. | Sterilization kills all spores but disinfection does not |
| C. | Sterilization involves chemicals and disinfection involves physical methods |
| D. | Sterilization is easier to achieve |
| Answer» C. Sterilization involves chemicals and disinfection involves physical methods | |
| 146. |
The difference between gram positive and negative bacteria lies in their_______________? |
| A. | cell wall |
| B. | cell membrane |
| C. | Nuclear material |
| D. | Mesosomes |
| Answer» B. cell membrane | |
| 147. |
The diagnostic investigation for syphilis is__________________? |
| A. | TPI test |
| B. | VDRL test |
| C. | TPHA test |
| D. | FTAB test |
| E. | Both C & D |
| Answer» F. | |
| 148. |
The diagnosis of gonorrhea is established by_____________? |
| A. | Compliment fixation tests |
| B. | Pili agglutination tests |
| C. | Haemagglutination tests |
| D. | All of the above tests |
| Answer» E. | |
| 149. |
The Dane particle is the______________? |
| A. | HBV |
| B. | IgG anti HAV |
| C. | Delta Virus |
| D. | HBC Ag |
| Answer» B. IgG anti HAV | |
| 150. |
The culture media used for cultivation of HSV is_____________? |
| A. | Chocolate agar |
| B. | Robertoson’s cooked-meat broth |
| C. | Chorio allantoic membrane |
| D. | Sabourad’s agar |
| Answer» D. Sabourad’s agar | |