MCQOPTIONS
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MCQOPTIONS
This section includes 285 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
A new group rodent-borne viruses are named as |
| A. | Arboviruses |
| B. | Roboviruses |
| C. | Rodent virus |
| D. | Rabies virus |
| Answer» C. Rodent virus | |
| 202. |
Genome of 'herpesvirus' is linear |
| A. | double-stranded DNA |
| B. | RNA |
| C. | single-stranded DNA |
| D. | single-stranded RNA |
| Answer» B. RNA | |
| 203. |
Mode of transmission for 'cache valley' virus is |
| A. | Ades mosquito |
| B. | Anopheles mosquito |
| C. | Culiseta mosquito |
| D. | All of above |
| Answer» E. | |
| 204. |
In which of the following body part does the influenza virus does not penetrate? |
| A. | small intestine |
| B. | nasopharynx |
| C. | trachea |
| D. | bronchi |
| Answer» B. nasopharynx | |
| 205. |
The characteristic lesion, abscess caused by Staphylococcus aureus is a type of non-localized infection. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» C. May be | |
| 206. |
Gas gangrene is caused by which of the following microorganisms? |
| A. | Staphylococcus aureus |
| B. | Clostridium perfringens |
| C. | Pseudomonas aeruginosa |
| D. | E.coli |
| Answer» C. Pseudomonas aeruginosa | |
| 207. |
The nature of the poliovirus gives for oral vaccination (satin vaccine) as part of the eradication programme is |
| A. | heat killed virus |
| B. | live attenuated strains of all three immunological types |
| C. | small dosage of wild-type live viruses |
| D. | formalin-inactivated viruses |
| Answer» C. small dosage of wild-type live viruses | |
| 208. |
Vibrio cholerae adheres to the epithelial cells of the small intestine by means of ______________ |
| A. | pili |
| B. | proteins |
| C. | hemagglutinin |
| D. | hydrogen bonds |
| Answer» D. hydrogen bonds | |
| 209. |
Mononucleosis is caused by which of the following viruses? |
| A. | VZV |
| B. | HSV |
| C. | EBV |
| D. | HIV |
| Answer» D. HIV | |
| 210. |
Ringworm of the scalp is known as ______________ |
| A. | tinea capitis |
| B. | tinea pides |
| C. | tinea unguium |
| D. | onychomycosis |
| Answer» B. tinea pides | |
| 211. |
Tuberculosis is which type of infection? |
| A. | acute |
| B. | chronic |
| C. | primary |
| D. | secondary |
| Answer» C. primary | |
| 212. |
Which of the following toxin is a hemolysin? |
| A. | diphtheria toxin |
| B. | botulism toxin |
| C. | tetanus toxin |
| D. | streptolysin O |
| Answer» E. | |
| 213. |
Nystatin is effective in curing ____________ |
| A. | Deep mycoses |
| B. | Dermatophyte infections |
| C. | Systemic mycoses |
| D. | Candida infections |
| Answer» E. | |
| 214. |
For Clostridium botulinum type A toxin, 1 MLD for a mouse is ____________ |
| A. | 2.5 X 10^-5 µg |
| B. | 4 X 10^-5 µg |
| C. | 6 X 10^-2 µg |
| D. | 5 µg |
| Answer» B. 4 X 10^-5 µg | |
| 215. |
Syphilis is caused by which of the following organism? |
| A. | Treponema pallidum |
| B. | Treponema pertenue |
| C. | Treponema endemicum |
| D. | Treponema carateum |
| Answer» B. Treponema pertenue | |
| 216. |
Which of the following condition is false for tissue invasion by C.perfringens? |
| A. | anaerobic condition of the wound |
| B. | production of large amounts of hydrogen gas |
| C. | production of small amounts of hydrogen gas |
| D. | release of toxins |
| Answer» D. release of toxins | |
| 217. |
The disease espundia is caused by which of the following protozoa? |
| A. | Leishmania brasiliensis |
| B. | Leishmania donovani |
| C. | Leishmania tropica |
| D. | Phlebotomus sp |
| Answer» B. Leishmania donovani | |
| 218. |
Which of the following is a plasmid-mediated toxin? |
| A. | diphtheria toxin |
| B. | botulism toxin |
| C. | tetanus toxin |
| D. | food-poisoning toxin |
| Answer» E. | |
| 219. |
Which of the following animallike flagellates has a flagellum originating from the midportion of the cell? |
| A. | amastigote |
| B. | promastigote |
| C. | epimastigote |
| D. | trypomastigote |
| Answer» D. trypomastigote | |
| 220. |
Where does Neisseria meningitidis reach after entering the body? |
| A. | kidney |
| B. | intestine |
| C. | nasopharynx |
| D. | meninges |
| Answer» E. | |
| 221. |
A protein containing partial with no detachable 'nucleic acid' are known as |
| A. | Virion |
| B. | Prions |
| C. | Viroid |
| D. | Proteins |
| Answer» C. Viroid | |
| 222. |
'Noroviruses' is causative agent for |
| A. | Headache |
| B. | Nausea |
| C. | Gastroenteritis |
| D. | Measles |
| Answer» D. Measles | |
| 223. |
'Norovirus' is common cause of |
| A. | Gastroenteritis |
| B. | Skin rash |
| C. | Bronchitis |
| D. | Mad cow disease |
| Answer» B. Skin rash | |
| 224. |
Poliovirus attaches to central nervous system by means of ______________ |
| A. | pili |
| B. | proteins |
| C. | hemagglutinin |
| D. | hydrogen bonds |
| Answer» C. hemagglutinin | |
| 225. |
A major difference between EHEC and EPEC is |
| A. | EHEC secretes a Shiga-like toxin and EPEC does not |
| B. | EHEC possesses a type III secretion system and EPEC does not |
| C. | EPEC rearranges host cell actin and EHEC does not |
| D. | EPEC passes through the placenta to infect the fetus and EHEC does not |
| Answer» B. EHEC possesses a type III secretion system and EPEC does not | |
| 226. |
Plastic implants can pose a serious nosocomial infection problem because |
| A. | phagocytes have trouble moving on the plastic surface |
| B. | phagocytes have trouble engulfing bacteria embedded in a biofilm |
| C. | infected implants usually have to be surgically removed |
| D. | all of the above |
| Answer» E. | |
| 227. |
Which of the following organisms produces neurotoxin as a virulence factor? |
| A. | Bacillus anthracis |
| B. | Clostridium tetani |
| C. | Streptococcus pneumoniae |
| D. | Staphylococcus aureus |
| Answer» C. Streptococcus pneumoniae | |
| 228. |
Which of the following is true regarding anthrax? |
| A. | Anthrax is caused by a virus |
| B. | Anthrax is highly contagious |
| C. | Inhalation anthrax and cutaneous anthrax are caused by separate strains of Bacillus anthracis |
| D. | Inhalation Anthrax requires infection with a large number of spores |
| Answer» E. | |
| 229. |
Which of the following does not grow in Sabouraud’s glucose agar media? |
| A. | Histoplasma capsulatum |
| B. | Coccidioides immitis |
| C. | Sporothrix schenckii |
| D. | Blastomyces dermatitidis |
| Answer» E. | |
| 230. |
Which of the following microorganism causes lesions in the form of abscesses? |
| A. | Staphylococcus aureus |
| B. | Streptococcus pyogenes |
| C. | Streptococcus pneumoniae |
| D. | Clostridium perfringens |
| Answer» B. Streptococcus pyogenes | |
| 231. |
'HBV' belongs to family |
| A. | Piconavirus |
| B. | Hepdnavirus |
| C. | Flavivirus |
| D. | Deltavirus |
| Answer» C. Flavivirus | |
| 232. |
Which of the following is an arthropod? |
| A. | Clostridium perfringens |
| B. | Borrelia sp. |
| C. | Shigella |
| D. | Pseudomonas aeruginosa |
| Answer» C. Shigella | |
| 233. |
Which of the following causes epidemic ringworm of the scalp in children? |
| A. | Microsporum audouinii |
| B. | Trichophyton rubrum |
| C. | Candida albicans |
| D. | Epidermophyton floccosum |
| Answer» B. Trichophyton rubrum | |
| 234. |
Human T-cell lymphotrophic virus causes T-cell leukemiain |
| A. | Pigs |
| B. | Goats |
| C. | Humans |
| D. | Monkeys |
| Answer» D. Monkeys | |
| 235. |
'Slapped cheek' syndrome is caused by |
| A. | Poliovirus |
| B. | Parvovirus B19 |
| C. | Adenovirus |
| D. | Poxvirus |
| Answer» C. Adenovirus | |
| 236. |
African sleeping sickness is caused by _______________ |
| A. | Trypanosoma cruzi |
| B. | Trypanosoma gambiense |
| C. | Trichomonas vaginalis |
| D. | Leishmania tropica |
| Answer» C. Trichomonas vaginalis | |
| 237. |
Which microbe causes the disease erysipelas? |
| A. | S. pyogenes |
| B. | C. perfringens |
| C. | Pseudomonas aeruginosa |
| D. | E.coli |
| Answer» B. C. perfringens | |
| 238. |
Which of the following microorganism can cause acute renal failure? |
| A. | Leptospira |
| B. | Salmonella typhi |
| C. | Neisseria meningitidis |
| D. | Bacillus anthracis |
| Answer» B. Salmonella typhi | |
| 239. |
'rubella' virus causes infection in pregnant women, known as |
| A. | Congenital malformation |
| B. | Bone deformities |
| C. | Lungs carcinoma |
| D. | Heart failure |
| Answer» B. Bone deformities | |
| 240. |
'Classical dengue' is also known as |
| A. | Fever |
| B. | Breakbone fever |
| C. | Death fever |
| D. | Cough |
| Answer» C. Death fever | |
| 241. |
The influenza vaccine is administered each year because |
| A. | mutations in the viral hemagglutinin may allow the virus to evade the immune response elicited by previous vaccines |
| B. | it is a polysaccharide vaccine that does not confer long-term protection |
| C. | the vaccine is sufficiently toxic to make it necessary to administer only a small amount at any one time |
| D. | none of the above |
| Answer» B. it is a polysaccharide vaccine that does not confer long-term protection | |
| 242. |
Which drug is used for healing genital herpes? |
| A. | acyclovir |
| B. | penicillin |
| C. | erythromycin |
| D. | tetracycline |
| Answer» B. penicillin | |
| 243. |
V. cholerae does not penetrate into the body. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» B. False | |
| 244. |
Which of the following is common in the disease caused by Coryne-bacterium diphtheriae and Bacillus anthracis? |
| A. | Both organisms are gram-positive spore formers |
| B. | Diphtheria toxin and edema toxin are ADP ribosylating toxins |
| C. | The most serious disease symptoms are the direct result of toxin action |
| D. | Both organisms cause skin and respiratory tract infections |
| Answer» D. Both organisms cause skin and respiratory tract infections | |
| 245. |
What is the size of papillomaviruses? |
| A. | 30 nm |
| B. | 45 nm |
| C. | 2 nm |
| D. | 55 nm |
| Answer» E. | |
| 246. |
Fatalities following influenza infection are usually due to the |
| A. | dehydration |
| B. | bacterial superinfection |
| C. | damage to the heart muscle |
| D. | formation of granulomas in the lung |
| Answer» C. damage to the heart muscle | |
| 247. |
For the malaria protozoa, mosquitoes are the definitive host. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» B. False | |
| 248. |
Causative agent for 'scrapie' in sheep is |
| A. | Virion |
| B. | Prion |
| C. | Viroid |
| D. | Proteins |
| Answer» C. Viroid | |
| 249. |
The Sabin vaccine is 70 to 90 percent effective for immunization against poliomyelitis. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» C. May be | |
| 250. |
Which of the following disease is an example of septicemic infection? |
| A. | typhoid fever |
| B. | meningitis |
| C. | anthrax |
| D. | renal failure |
| Answer» D. renal failure | |