InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Which one the following viruse contains both DNA and RNAA. CyanophageB. Herpes virusC. Leuko virusD. Polio virus |
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Answer» Correct Answer - C (c) Leuko virus (a Retro virus) posses both DNA and RNA in their life cycle. |
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| 52. |
Viruses usually infect the whole plant except theA. Stem apexB. CortexC. PithD. Phloem |
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Answer» Correct Answer - A (a) Because in apical tips of shoot apex, a few growth hormones like auxins are formed which check infection of viruses. |
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| 53. |
Most of the plant viruses are characterized in havingA. DNAB. RNAC. DNA and RNAD. Lipids |
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Answer» Correct Answer - B |
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| 54. |
Influenza is caused byA. BacteriumB. VirusC. FungusD. Cyanobacterium |
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Answer» Correct Answer - B (b) Influenza is caused by virus. It is a RNA virus with a helical capsid surrounded by an envelope with spike. |
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| 55. |
Influenza virus has gotA. Naked capsidB. Enveloped capsidC. Naded polyhedral capsidD. No capsid at all |
| Answer» Correct Answer - B | |
| 56. |
Who discovered interferonsA. Issacs and LindmannB. Holmes and KnightC. Harshey and ChaseD. Enders |
| Answer» Correct Answer - A | |
| 57. |
A cryptogram has got how many pairs of informationA. 1B. 2C. 3D. 4 |
| Answer» Correct Answer - D | |
| 58. |
The agents which are known to cause CJD areA. Protein particlesB. A class of bacteriaC. A class of virusesD. Fungi |
| Answer» Correct Answer - A | |
| 59. |
Who proposed the phanerogram of virusA. Lwoff and TournierB. W.M. StanleyC. Weil et alD. None of these |
| Answer» Correct Answer - A | |
| 60. |
Virus was discovered by whomA. StanleyB. IvanowskiC. HerelleD. Beijerinck |
| Answer» Correct Answer - B | |
| 61. |
Protein of capsomeres is made up ofA. Nucleic acidsB. CarbohydratesC. FatsD. Amino acids |
| Answer» Correct Answer - D | |
| 62. |
A virion is aA. Without protein coat virusB. Enucleated virusC. PrionsD. Virus |
| Answer» Correct Answer - D | |
| 63. |
Cyanophages attackA. CyanobacteriaB. BacteriaC. FungiD. Lichens |
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Answer» Correct Answer - A |
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| 64. |
Which one of the following are intracellular obligate parasitesA. BacteriaB. VirusesC. Slime mouldsD. Blue-green algae |
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Answer» Correct Answer - B (b) Viruses are non-cellular, infectious, obligat, intracellular parasites. These are genetic elements (DNA or RNA) wrapped in a protein coat and are not considered to be organisms, as they can not reproduced independently. |
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| 65. |
Helper virus is calledA. Perfect Phage of viresB. A defective phage which helps another defective phageC. A latent phageD. None of these |
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Answer» Correct Answer - B (b) Helper virus needs another virus to be active. |
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| 66. |
The viruses are known asA. UnicellularB. AcellularC. MulticellularD. Free genes |
| Answer» Correct Answer - D | |
| 67. |
Which of the following is not concerned with virusesA. Viruses are made up of nucleic acid and proteinsB. Viruses multiply only in living host cellC. Viruses can not use oxygen for respirationD. Viruses can be grown in sugary liquid |
| Answer» Correct Answer - D | |
| 68. |
The size of TMV isA. `12.5xx300Å`B. `17.5xx300nm`C. `19.5xx250Å`D. `19.5xx250nm` |
| Answer» Correct Answer - B | |
| 69. |
Each capsomere of TMV contain amino acids whose number isA. 158B. 185C. 815D. 581 |
| Answer» Correct Answer - A | |
| 70. |
Ribovira is a group of viruses which containsA. dsDNAB. ssDNAC. RNA and DNA bothD. None of these |
| Answer» Correct Answer - C | |
| 71. |
Which of the folllowing is the smallest virusA. Foot and mouth virusB. Tobacco mosaic virusC. Coliphage lambda virusD. Wound tumour virus |
| Answer» Correct Answer - A | |
| 72. |
Which of the following is falseA. Most plant viruses are RNA virusesB. Most animal viruses are DNA virusesC. TMV has double straded RNA moleculeD. `T_(4)` bacteriophage has double stranded DNA molecule |
| Answer» Correct Answer - C | |
| 73. |
Which of the folllowing is the largest virusA. Penicillium virusB. Wound tumour virusC. Pox virusD. None of the above |
| Answer» Correct Answer - C | |
| 74. |
The covering of viron is –(a) cell membrane(b) cell wall(c) cuticle(d) capsid |
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Answer» The answer is (d) capsid |
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| 75. |
Which one is a viral disease –(a) Typhoid(b) TB(c) Polio(d) Diptheria |
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Answer» The answer is (c) Polio |
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| 76. |
Name the virus which has double-stranded RNA. |
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Answer» The answer is Reoviruses |
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| 77. |
Name the virus which has single-stranded DNA. |
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Answer» The answer is Parvoviruses. |
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| 78. |
The genetic material of Papaya Mosaic Virus isA. ssDNAB. dsDNAC. dsRNAD. ssRNA |
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Answer» Correct Answer - D |
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| 79. |
Wound tumour virus hasA. Double stranded DNAB. Single stranded DNAC. Double stranded RNAD. Single stranded RNA |
| Answer» Correct Answer - C | |
| 80. |
Which of the following is a DNA containing plant virusA. Tobacco mosaic virusB. Tomato mosaic virusC. Cauliflower mosaic virusD. Potato mosaic virus |
| Answer» Correct Answer - C | |
| 81. |
A virus containing ssRNA act as a template for DNA synthesis is called asA. Polio virusB. Retro virusC. Pox virusD. Adeno virus |
| Answer» Correct Answer - B | |
| 82. |
AIDS virus contains or Human immuno deficiency (HIV) virus has protein coat and genetic material which isA. Single stranded RNA with proteinB. Double stranded RNAC. Single stranded DNA with proteinD. Double stranded DNA |
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Answer» Correct Answer - A (a) HIV virus is a retrovirus which contains single stranded RNA surrounded by protein coat (core shell) as genetic material. It causes AIDS. |
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| 83. |
Viral genome incorporated and integrates with bacterial genomes is refer to asA. ProphaseB. ProphageC. BacteriophageD. None of these |
| Answer» Correct Answer - B | |
| 84. |
Caulimo virus (Cauliflower mosaiv virus) are a group of viruses which haveA. Double stranded RNAB. Single stranded RNAC. Single stranded DNAD. Double stranded DNA |
| Answer» Correct Answer - D | |
| 85. |
Which of the bacteriophage is a virulentA. Coliphage `M_(12)`B. `lambda` phageC. `T_(4)` phageD. None of these |
| Answer» Correct Answer - D | |
| 86. |
The first to isolate plant virus was Or The Tobacco mosaic virus was crystallized for first time byA. W.M. StanleyB. E. C. StackmannC. A. K. SmithD. Ivanowski |
| Answer» Correct Answer - A | |
| 87. |
The capsid of tobacco mosaiv virus (TMV) has capsomeres numberingA. 1230B. 2130C. 2310D. 3120 |
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Answer» Correct Answer - B (b) The protein coat (capsid) consists of 2130 identical subunits (capsomeres) in TMV. |
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| 88. |
The first to isolate plant virus was Or The Tobacco mosaic virus was crystallized for first time byA. PirieB. BawdenC. StanleyD. Beijerinck |
| Answer» Correct Answer - C | |
| 89. |
The filterable property of tobacco mosaic virus (TMV) was shown byA. IvanowskyB. BeijerinckC. StanleyD. Winogradsky |
| Answer» Correct Answer - A | |
| 90. |
A single strande DNA molecule is the genetic material of bacteriophageA. `T_(2)`B. `T_(4)`C. `phixx174`D. `lambda` |
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Answer» Correct Answer - C (c) `phixx174` Bacteriophage : In this bacteriophage, DNA is rounded, closed and bangle shaped, the duplication pattern is different type in this bacteriophage. |
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| 91. |
Which of the following statements is not true for retrovirusesA. The gentic material in mature retroviruses in RNAB. Retroviruses are causative agents or certain kinds of cancer in manC. DNA is not present at any stage in the life cycle of retrovirusesD. Retroviruses carry gene for RNA-dependent DNA polymerase |
| Answer» Correct Answer - C | |
| 92. |
In phage (plaque) cultureA. Only protein of virus enters and multipliesB. Only DNA of virus enters the bacterium and multipliesC. Whole virus enters the bacterium and multipliesD. None of these |
| Answer» Correct Answer - B | |
| 93. |
An extreme example of latency in which DNA of the phage is integrated with the DNA of host cell chromosome isA. LysisB. LysogenyC. Attenuated virusD. Prophage |
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Answer» Correct Answer - B (b) Lysogeny : The process in which bacteriophage attacking on host bacteria, after transduction burst the bacterial cell is called as lysogeny. |
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| 94. |
Satellite virus is aA. IndependentB. Associated with an activator virusC. Both (a) and (b)D. None of these |
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Answer» Correct Answer - B (b) Satellite virus : This virus carry some other viruses on his body and behaves like carrier e.g. tobacco mottle virus. |
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