MCQOPTIONS
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MCQOPTIONS
This section includes 334 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.
| 301. |
At what temperature incubation is required for the adsorption of phage T4 and DNA injection into E.coli? |
| A. | 50 degree C |
| B. | 15 degree C |
| C. | 37 degree C |
| D. | 80 degree C |
| Answer» D. 80 degree C | |
| 302. |
Human pathogen of a family 'arenavirus' is |
| A. | Rabies virus |
| B. | Herpes virus |
| C. | Lassa virus |
| D. | Hepatitis delta virus |
| Answer» D. Hepatitis delta virus | |
| 303. |
Member of a family 'Reoviruses' that causes diarrhoea in infants is called |
| A. | Congovirus |
| B. | Rotavirus |
| C. | Picornavirus |
| D. | hepadnavirus |
| Answer» C. Picornavirus | |
| 304. |
Enzyme neuraminidase is carried by which of the following viruses? |
| A. | Human immunodeficiency virus |
| B. | Epstein-Barr virus |
| C. | Influenza virus |
| D. | Adenovirus |
| Answer» D. Adenovirus | |
| 305. |
Cancer of the lip of mouth have been associated with ___________ |
| A. | HSV1 |
| B. | HSV2 |
| C. | EBV |
| D. | SV 40 |
| Answer» B. HSV2 | |
| 306. |
Scrapie happens in which of following animals? |
| A. | horse |
| B. | cow |
| C. | lamb |
| D. | sheep |
| Answer» E. | |
| 307. |
Naked viruses with 'icosahedral' symmetry having double-stranded super coiled 'DNA' are known as |
| A. | Papovavirus |
| B. | Poxvirus |
| C. | Parvovirus |
| D. | Adenovirus |
| Answer» B. Poxvirus | |
| 308. |
In papovaviruses, DNA occurs in which of the following forms? |
| A. | linear dsDNA |
| B. | linear ssDNA |
| C. | supercoiled circular dsDNA |
| D. | supercoiled circular ssDNA |
| Answer» D. supercoiled circular ssDNA | |
| 309. |
Causative agent of tobacco mosaic disease was filterable. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» B. False | |
| 310. |
Reverse transcriptase is present in which of following viruses? |
| A. | picoRNAvirus |
| B. | coronavirus |
| C. | flavivirus |
| D. | retrovirus |
| Answer» E. | |
| 311. |
Creutzfeldt-Jakob disease strikes which of following? |
| A. | cows |
| B. | sheep |
| C. | lamb |
| D. | humans |
| Answer» E. | |
| 312. |
Which of the following viruses belong/s to family caliciviridae? |
| A. | Hepatitis B virus |
| B. | Hepatitis D virus |
| C. | Hepatitis E virus |
| D. | All of these |
| Answer» D. All of these | |
| 313. |
Which of the following specimens contain/s hepatitis B virus in an infected person? |
| A. | Blood |
| B. | Semen |
| C. | Saliva |
| D. | All of these |
| Answer» E. | |
| 314. |
The DNA of phage lambda is circular both in the virion and in the host cell. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» C. May be | |
| 315. |
Which of following scientists was first to discover concept of viruses? |
| A. | Adolf Mayer |
| B. | Dimitri Ivanowsky |
| C. | Beijerinck |
| D. | Watson |
| Answer» D. Watson | |
| 316. |
Which of the following are characteristics of the process viropexis? |
| A. | phagocytic process |
| B. | plant viruses penetrate host cells through ectodesmata |
| C. | occurs by the enzyme RNA polymerase |
| D. | phagocytic process and occurs by the enzyme lysosomal proteases |
| Answer» E. | |
| 317. |
Parvoviruses contain how many genes? |
| A. | 100 genes |
| B. | 500 genes |
| C. | 40 genes |
| D. | 3 genes |
| Answer» E. | |
| 318. |
RNA in animal viruses exist as circular dsRNA. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» C. May be | |
| 319. |
In which of the following viruses DNA forms hairpins? |
| A. | parvoviruses |
| B. | herpesviruses |
| C. | poxviruses |
| D. | picornaviruses |
| Answer» B. herpesviruses | |
| 320. |
What is the shape of helical phages? |
| A. | regular solids |
| B. | polyhedra |
| C. | rod-shaped |
| D. | icosahedral |
| Answer» D. icosahedral | |
| 321. |
Pleomorphic viruses possess double-stranded DNA. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» B. False | |
| 322. |
The nucleic scid core of phages is covered by a protein coat known as _______________ |
| A. | capsomere |
| B. | capsid |
| C. | outer envelope |
| D. | nuclear membrane |
| Answer» C. outer envelope | |
| 323. |
Which of the following is true for the bacteriophage MV-L2 ? |
| A. | head is made up of large capsomeres |
| B. | head is made up of small capsomeres |
| C. | no contractile sheath is present |
| D. | filamentous form |
| Answer» E. | |
| 324. |
The most complex type of bacterial virus has which of the following morphological features? |
| A. | hexagonal head and tail fibres |
| B. | no contractile sheath |
| C. | hexagonal head but no tail |
| D. | hexagonal head,rigid tail with contractile sheath |
| Answer» E. | |
| 325. |
WHICH_OF_THE_FOLLOWING_METHOD_IS_USED_FOR_THE_PRODUCTION_OF_VACCINES_AGAINST_YELLOW_FEVER??$ |
| A. | tissue-culture method |
| B. | chick-embryo method |
| C. | through susceptible animals |
| D. | through appropriate media |
| Answer» C. through susceptible animals | |
| 326. |
The_karyotype_of_cells_formed_from_continuous_cell_lines_is________________$ |
| A. | haploid |
| B. | diploid |
| C. | aneuploid |
| D. | haploid and diploid |
| Answer» D. haploid and diploid | |
| 327. |
For the cultivation of viruses the fertile chicken eggs should be incubated for how many day(s)? |
| A. | 1 |
| B. | 2-4 |
| C. | 5-12 |
| D. | 2-7 |
| Answer» D. 2-7 | |
| 328. |
Cowpea virus belongs to which of the following group of viruses? |
| A. | Comovirus |
| B. | Dianthovirus |
| C. | Cucumovirus |
| D. | Carlavirus |
| Answer» B. Dianthovirus | |
| 329. |
The family of Rhabdoviridae possesses dsRNA. |
| A. | True |
| B. | False |
| Answer» C. | |
| 330. |
Which of the following viruses have a complex symmetry? |
| A. | Alphavirus |
| B. | Mobillivirus |
| C. | Orthopoxvirus |
| D. | Parvovirus |
| Answer» D. Parvovirus | |
| 331. |
Which of the following viruses possess an envelope? |
| A. | Herpesvirus |
| B. | Reovirus |
| C. | Tobacco mosaic virus |
| D. | Papillomavirus |
| Answer» B. Reovirus | |
| 332. |
Rous sarcoma virus consists of RNA as its genetic material. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 333. |
Enterovirus belongs to which of the following family of viruses? |
| A. | Tymovirus |
| B. | Picornaviridae |
| C. | Reoviridae |
| D. | Closterovirus |
| Answer» C. Reoviridae | |
| 334. |
How many dsRNA segments are present in the reovirus genome? |
| A. | 1 |
| B. | 3 |
| C. | 50 |
| D. | 10 |
| Answer» E. | |