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.
| 251. |
For diagnosis of Smallpox viruses demonstration of Negri bodies is carried out. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» C. May be | |
| 252. |
After how many days of infection by mosquitoes do the symptoms for malaria occur? |
| A. | 1-2 |
| B. | 3-5 |
| C. | 10-16 |
| D. | 20-30 |
| Answer» D. 20-30 | |
| 253. |
Toxin A involved in pseudomembranous colitis is a type of _______________ |
| A. | endotoxin |
| B. | enterotoxin |
| C. | cytotoxin |
| D. | neurotoxin |
| Answer» C. cytotoxin | |
| 254. |
HSV-1 stands for |
| A. | Human immuno virus |
| B. | Acquired immunodeficiency syndrome |
| C. | Herpes simplex virus type 1 |
| D. | Herpesvirus |
| Answer» D. Herpesvirus | |
| 255. |
Which of the following capsular polysaccharides is used for preparing vaccine against meningococcal meningitis? |
| A. | serovar A |
| B. | serovar B |
| C. | serovar C |
| D. | serovar A and C |
| Answer» E. | |
| 256. |
'Ebola' virus was identified in |
| A. | 1976 |
| B. | 1977 |
| C. | 1970 |
| D. | 1979 |
| Answer» B. 1977 | |
| 257. |
Which of the following is a specific test for detecting antitreponemal antibodies? |
| A. | VDRL |
| B. | RPR |
| C. | TPH |
| D. | Widal Test |
| Answer» D. Widal Test | |
| 258. |
'Echinoviruses' is similar in structure to |
| A. | Enterovirus |
| B. | Adenovirus |
| C. | Hantavirus |
| D. | Herpesvirus |
| Answer» B. Adenovirus | |
| 259. |
Kidney 'carcinoma' in frogs is implicated by |
| A. | Herpesvirus |
| B. | Papovavirus |
| C. | Adenovirus |
| D. | Hantavirus |
| Answer» B. Papovavirus | |
| 260. |
Majority of upper and lower respiratory tract infection is caused by the |
| A. | Hantavirus |
| B. | Adenovirus |
| C. | Herpes simplex virus type 1 |
| D. | Poliovirus |
| Answer» C. Herpes simplex virus type 1 | |
| 261. |
Germ-free animals require lower levels of B vitamins. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» C. May be | |
| 262. |
Pseudomembranous colitis is caused by the strains of which of the following microorganism? |
| A. | Streptococcus mutans |
| B. | Clostridium difficile |
| C. | Streptococcus salivarius |
| D. | Clostridium botulinum |
| Answer» C. Streptococcus salivarius | |
| 263. |
Where does the Streptococcus mutans adhere to the body site? |
| A. | intestinal tract |
| B. | tongue |
| C. | teeth |
| D. | hairs |
| Answer» D. hairs | |
| 264. |
Which of the following vitamins are not required by normal animals? |
| A. | Vit K |
| B. | Vit B |
| C. | Vit C |
| D. | Vit A |
| Answer» B. Vit B | |
| 265. |
Which of the following microorganism produces colicins in intestine? |
| A. | E.coli |
| B. | B.subtilis |
| C. | Clostridium botulinum |
| D. | Streptococcus salivarius |
| Answer» B. B.subtilis | |
| 266. |
Alveolar macrophages are phagocytic in nature. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» B. False | |
| 267. |
Saliva generally has a microbial population of _______ bacteria per milliliter. |
| A. | 100 |
| B. | 1000 |
| C. | 105 |
| D. | 108 |
| Answer» E. | |
| 268. |
Fusobacterium belongs to which type of bacterial group? |
| A. | aerobes |
| B. | facultative anaerobes |
| C. | obligate anaerobes |
| D. | microaerophilic |
| Answer» D. microaerophilic | |
| 269. |
Which enzyme is required for the production of glucan? |
| A. | glycosyl transferase |
| B. | glucoisomerase |
| C. | hexokinase |
| D. | glucose-6-phosphatase |
| Answer» B. glucoisomerase | |
| 270. |
Which of the following causes the disease acne vulgaris? |
| A. | Staphylococcus epidermis |
| B. | Diphtheroids |
| C. | P.acnes |
| D. | E.coli |
| Answer» D. E.coli | |
| 271. |
Which of the following bacteria are found in the nose? |
| A. | Haemophilus sp. |
| B. | S. pneumoniae |
| C. | Corynebacterium sp. |
| D. | S. epidermidis |
| Answer» E. | |
| 272. |
Which of the following microorganism is found in the gingival crevices at puberty? |
| A. | Lactobacillus |
| B. | Treponema sp. |
| C. | Actinomyces |
| D. | S.mutans |
| Answer» C. Actinomyces | |
| 273. |
The microorganisms stick to which of the following regions of the respiratory tract? |
| A. | nasal baffle |
| B. | nasopharynx |
| C. | mucus |
| D. | oropharynx |
| Answer» D. oropharynx | |
| 274. |
Which of the following viruses are termed as ‘orphan’ viruses? |
| A. | retroviruses |
| B. | echoviruses |
| C. | coxsackieviruses |
| D. | adenoviruses |
| Answer» C. coxsackieviruses | |
| 275. |
Which of the following is not a Gram-positive bacilli? |
| A. | Bacteroides |
| B. | Eubacterium |
| C. | Lactobacillus |
| D. | Bifidobacterium |
| Answer» B. Eubacterium | |
| 276. |
Bacteria can be grown on the dry surface of skin. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» C. May be | |
| 277. |
Which microorganism among the following can live as a commensal but can also be pathogenic? |
| A. | Trichomonas hominis |
| B. | Entamoeba histolytica |
| C. | Endolimax |
| D. | Iodamoeba |
| Answer» C. Endolimax | |
| 278. |
Degree of pathogenicity is referred to as _________________ |
| A. | infection |
| B. | virulence |
| C. | avirulent |
| D. | attenuated |
| Answer» C. avirulent | |
| 279. |
Enterococci is found in which part of the intestine? |
| A. | duodenum |
| B. | jejunum |
| C. | ileum |
| D. | large intestine |
| Answer» C. ileum | |
| 280. |
Which body part contains the largest microbial population? |
| A. | stomach |
| B. | small intestine |
| C. | large intestine |
| D. | mouth |
| Answer» D. mouth | |
| 281. |
Animals that are contaminated with germs are said to be gnotobiotic. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» C. May be | |
| 282. |
How many day old embryonated eggs was used by Reyniers to rear first germ-free animals? |
| A. | 20 |
| B. | 50 |
| C. | 2 |
| D. | 7 |
| Answer» B. 50 | |
| 283. |
Which among the following was the first germ-free animal to be reared? |
| A. | guinea pigs |
| B. | rats |
| C. | chickens |
| D. | monkey |
| Answer» D. monkey | |
| 284. |
Who among the following was successful in raising 17 germ-free chickens for 40 days? |
| A. | Pasteur |
| B. | Schottelius |
| C. | Cohendy |
| D. | Reyniers |
| Answer» D. Reyniers | |
| 285. |
Within how many days after birth a stable flora develops? |
| A. | 1 day |
| B. | 7 days |
| C. | 30 days |
| D. | 7-14 days |
| Answer» E. | |