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.
| 151. |
Which disease is caused by P. pseudomallei organism? |
| A. | melioidosis |
| B. | diarrhea |
| C. | gastroenteritis |
| D. | typhoid |
| Answer» B. diarrhea | |
| 152. |
Which of the following antibiotics causes inhibition of ergosterol biosynthesis? |
| A. | amphotericin B |
| B. | 5-fluorocytosine |
| C. | ketoconazole |
| D. | miconazole |
| Answer» D. miconazole | |
| 153. |
The schizonts enter which body part? |
| A. | bloodstream |
| B. | spleen |
| C. | mouth |
| D. | liver |
| Answer» E. | |
| 154. |
Epidemic encephalitis, characterized by headache, fever and caused by |
| A. | Human herpesvirus 8 |
| B. | Japanese encephalitis virus |
| C. | Marburg virus |
| D. | Lassa virus |
| Answer» C. Marburg virus | |
| 155. |
Hepatic 'carcinoma' is caused by the |
| A. | HCV |
| B. | HBV |
| C. | HAV |
| D. | HIV |
| Answer» B. HBV | |
| 156. |
German 'measles' is caused by |
| A. | Rubella virus |
| B. | Congovirus |
| C. | Rotavirus |
| D. | Coronavirus |
| Answer» B. Congovirus | |
| 157. |
Immune attack against viral antigens on infected 'hepatocytes' is mediated by |
| A. | Cytotoxic T cell |
| B. | Lymphocytes |
| C. | Erthyrocytes |
| D. | Leukocytes |
| Answer» B. Lymphocytes | |
| 158. |
HSV-1 has been recognized as the causative agent of disease involving the genital tract. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» C. May be | |
| 159. |
The agent responsible for causing mad cow disease is thought to be a |
| A. | fungus |
| B. | protozoan |
| C. | prion |
| D. | virus |
| Answer» D. virus | |
| 160. |
Chagas’ disease is transmitted to humans by ________________ |
| A. | tsetse fly |
| B. | mosquitoes |
| C. | reduviid bugs |
| D. | sandflies |
| Answer» D. sandflies | |
| 161. |
The fatality rate for variola minor is ____________ |
| A. | 10-30% |
| B. | 1-5% |
| C. | 0.1-0.3% |
| D. | 60-80% |
| Answer» D. 60-80% | |
| 162. |
Arbovirus are classified in three main groups namely bunyaviruses, togaviruses and |
| A. | Robovirus |
| B. | Echovirus |
| C. | Flaviviruses |
| D. | Rodents virus |
| Answer» D. Rodents virus | |
| 163. |
'Retroviruses' are also called as |
| A. | DNA Tumor virus |
| B. | RNA Tumor virus |
| C. | Naked Viruses |
| D. | Enveloped viruses |
| Answer» C. Naked Viruses | |
| 164. |
What is the chemical nature of endotoxins? |
| A. | protein |
| B. | polysaccharide |
| C. | lipopolysaccharide |
| D. | lipid |
| Answer» D. lipid | |
| 165. |
When the infection occurs suddenly and with severe intensity it is known as ______________ |
| A. | chronic |
| B. | fulminating |
| C. | acute |
| D. | localized |
| Answer» C. acute | |
| 166. |
Which of the following characteristics of the microorganism does not help in causing the infectious disease? |
| A. | must enter the host |
| B. | must metabolize in the host tissue |
| C. | must resist host defenses |
| D. | must not damage the host |
| Answer» E. | |
| 167. |
Which type of strains are used in vaccines? |
| A. | virulent |
| B. | avirulent |
| C. | attenuated |
| D. | non-pathogenic |
| Answer» D. non-pathogenic | |
| 168. |
Microbial adherence is selective in nature. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» B. False | |
| 169. |
'Papovavirus' is the |
| A. | DNA Tumor virus |
| B. | RNA Tumor virus |
| C. | Enveloped viruses |
| D. | Naked viruses |
| Answer» B. RNA Tumor virus | |
| 170. |
Which of the following microorganism causes infection in burns? |
| A. | Pseudomonas aeruginosa |
| B. | Clostridium perfringens |
| C. | Borrelia sp |
| D. | Streptococcus sp |
| Answer» B. Clostridium perfringens | |
| 171. |
Which of the following microorganism participates in active penetration into the body? |
| A. | Clostridium perfringens |
| B. | Shigella |
| C. | Borrelia sp. |
| D. | Pseudomonas aeruginosa |
| Answer» C. Borrelia sp. | |
| 172. |
Which of the following microorganism causes relapsing fever in humans? |
| A. | Pseudomonas aeruginosa |
| B. | Clostridium perfringens |
| C. | Borrelia sp. |
| D. | Streptococcus sp. |
| Answer» D. Streptococcus sp. | |
| 173. |
Wounds and burns represent one active mechanism. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» C. May be | |
| 174. |
Bacillary dysentery is caused by which of the following microorganism? |
| A. | Clostridium perfringens |
| B. | Borrelia sp. |
| C. | Shigella |
| D. | Pseudomonas aeruginosa |
| Answer» D. Pseudomonas aeruginosa | |
| 175. |
Which of the following terms stand for damage to the spinal cord during tertiary stage of syphilis? |
| A. | Lymphadenopathy |
| B. | Malaise |
| C. | Paresis |
| D. | Tabes dorsalis |
| Answer» E. | |
| 176. |
Which of the following disease is caused by DNA viruses? |
| A. | Poliomyelitis |
| B. | Yellow fever |
| C. | Measles |
| D. | Small pox |
| Answer» E. | |
| 177. |
Which drug is used to cure influenza caused by type A strains? |
| A. | Penicillin |
| B. | Amantadine |
| C. | Ampicillin |
| D. | Tetracycline |
| Answer» C. Ampicillin | |
| 178. |
Pseudomembraneous colitis is |
| A. | precipitated by the use of certain antibiotics |
| B. | caused by a gram-positive bacterium |
| C. | caused by a spore-forming bacterium |
| D. | all of the above |
| Answer» E. | |
| 179. |
Immunization with which of the following toxoid induces high titer serum antibody, but does not protect from the corresponding disease? |
| A. | Tetanus |
| B. | Botulism |
| C. | Diphtheria |
| D. | Shigellosis |
| Answer» C. Diphtheria | |
| 180. |
Papilloma virus are classified on basis of 'DNA' restriction fragment |
| A. | Technique |
| B. | Analysis |
| C. | Procedure |
| D. | Methods |
| Answer» C. Procedure | |
| 181. |
Where does polioviruses multiply first? |
| A. | skin |
| B. | oropharynx |
| C. | lymph nodes |
| D. | spinal cord |
| Answer» C. lymph nodes | |
| 182. |
Each of the 3 virulence factors of Bacillus anthracis i.e. the capsule, edema toxin and lethal toxin can affect the activity of |
| A. | B cells |
| B. | macrophages |
| C. | ciliated epithelial cells |
| D. | M cells |
| Answer» C. ciliated epithelial cells | |
| 183. |
How many B subunits are present in cholera toxin? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 5 |
| Answer» E. | |
| 184. |
What pressure of oxygen is used in the treatment involving the use of hyperbaric oxygen? |
| A. | 1 |
| B. | 5 |
| C. | 100 |
| D. | 3 |
| Answer» E. | |
| 185. |
Which of the following statement is wrong regarding the effects of cholera toxin? |
| A. | loss of fluid from the body |
| B. | pH of blood remains constant |
| C. | hemoconcentration |
| D. | bicarbonate ions are lost from blood |
| Answer» C. hemoconcentration | |
| 186. |
What is the shape of the lymph nodes? |
| A. | tubular |
| B. | circular |
| C. | cuboidal |
| D. | ovoid |
| Answer» E. | |
| 187. |
Leading cause of 'pneumonia' and 'bronchiolitis' in infants is |
| A. | Respiratory syncytial virus |
| B. | Parvovirus B19 |
| C. | Hepatitis B virus |
| D. | Influenza virus |
| Answer» B. Parvovirus B19 | |
| 188. |
Lymph enters a lymph node by several _________________ |
| A. | lymphatic trunks |
| B. | lymphatic vessels |
| C. | lymphatic ducts |
| D. | arteries |
| Answer» C. lymphatic ducts | |
| 189. |
Which of the following is not the characteristic of a bubo? |
| A. | inflamed |
| B. | sore when infected |
| C. | small |
| D. | free from bacteria |
| Answer» D. free from bacteria | |
| 190. |
Amputation is the only way to stop the spread of C.perfringens to the rest of the body. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» B. False | |
| 191. |
Which of the following viruses consists of a helical nucleocapsid? |
| A. | Picornaviruses |
| B. | Togaviruses |
| C. | Adenoviruses |
| D. | Coronaviruses |
| Answer» E. | |
| 192. |
In transcription of RNA genome into DNA, involved gene is known as |
| A. | Gag gene |
| B. | Pol gene |
| C. | Env gene |
| D. | Tat gene |
| Answer» C. Env gene | |
| 193. |
The LD50 dose can be determined more precisely than LD100 dose. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» B. False | |
| 194. |
In which body part does the C. jejuni causes infection? |
| A. | mouth |
| B. | stomach |
| C. | small and large intestine |
| D. | limbs |
| Answer» D. limbs | |
| 195. |
Clostridium perfringens type A occurs as a natural flora of ______________ |
| A. | stomach |
| B. | mouth |
| C. | intestine |
| D. | eyes |
| Answer» D. eyes | |
| 196. |
Which of the following statements is not true regarding Mycobacterium tuberculosis and/or the disease it causes? |
| A. | The pathogen contains mycolic acid in its cell wall |
| B. | The pathogen can live inside macrophages |
| C. | Antibodies to the pathogen are protective |
| D. | None of these |
| Answer» D. None of these | |
| 197. |
Where does Streptococcus pyogenes infects in the body to cause infection? |
| A. | cervix |
| B. | small intestine |
| C. | urethra |
| D. | throat |
| Answer» E. | |
| 198. |
Which bacteria has an unusual capsule among the following? |
| A. | Haemophilus influenzae |
| B. | Klebsiella pneumoniae |
| C. | Streptococcus pneumoniae |
| D. | Bacillus anthracis |
| Answer» E. | |
| 199. |
Where is the protozoa present during the acute stage of Chagas’ disease? |
| A. | blood |
| B. | spleen |
| C. | liver |
| D. | stool |
| Answer» B. spleen | |
| 200. |
Faecal-oral and respiratory tract is mode of transmission for |
| A. | Herpesvirus |
| B. | Congo virus |
| C. | Ebola |
| D. | Adenovirus |
| Answer» E. | |