301. One virus particle prevents multiplication of 2nd virus. This phenomena is____________?
A. Viral interference
B. Mutation
C. Supervision
D. Permutation
✅ The correct answer is option Viral interference.
Microbiology MCQs
302. Pigs are important source of_____________?
A. Japanese encephalitis
B. Kuru
C. Yellow fever
D. Rabies
✅ The correct answer is option Japanese encephalitis.
303. Q fever is caused by________________?
A. Rickettsia tsutsugamushi
B. R. prowozekii
C. R. quintana
D. C. burnetti
✅ The correct answer is option burnetti.
304. Aflatoxins are produced by________________?
A. Aspergillus niger
B. Aspergillus fumigatus
C. Aspergillus flavus
D. All of the above
✅ The correct answer is option Aspergillus flavus.
305. Robertsons cooked meat medium is best suited for cultivation of_______________?
A. Clostridia
B. S. epidermidis
C. Choleria
D. Mycobacterium
✅ The correct answer is option Clostridia.
306. Oil and Grease are sterilized by________________?
A. Hot air oven
B. Auto claving
C. Irradiation
D. Ethylene dioxide
✅ The correct answer is option Hot air oven.
307. One of the following is a zoonotic disease_____________?
A. Anthrax
B. Typhoid
C. Bacillary dysentery
D. Cholera
✅ The correct answer is option Anthrax.
308. Which is false about Wucheraria bancrofti_________________?
A. Causes filariasis
B. Body is slender and long
C. Terminal nuclei absent
D. Man and anapheles mosquito are hosts
✅ The correct answer is option Man and anapheles mosquito are hosts.
309. The protective effects breast milk are known to be associated with______________?
A. IgM antibodies
B. Lysozyme
C. Mast cells
D. IgA antibodies
✅ The correct answer is option IgA antibodies.
310. Characteristic feature of retrovirus is_____________?
A. Ribonuclease
B. Reverse transcriptase
C. DNA polymerase
D. Restriction endonuclease
✅ The correct answer is option Reverse transcriptase.