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. |
Prokaryota includesA. MycoplasmaB. UlothrixC. FungiD. Mycoplasma and blue-green algae |
| Answer» Correct Answer - d | |
| 52. |
Which of the following is called 'Jockers of microbiological park'A. BacteriaB. MycoplasmaC. NostocD. None of these |
| Answer» Correct Answer - b | |
| 53. |
Which of the following is effective against mycoplasmal diseasesA. VancomycinB. PenicillinC. ChloramphenicolD. All the avove |
| Answer» Correct Answer - c | |
| 54. |
Which of the following diseases is caused by bacteria?A. ArthritisB. Amoebic dysenteryC. Beri-beriD. Diphtheria |
| Answer» Correct Answer - D | |
| 55. |
Bacteria areA. photosynthetic autotrophicB. chemosynthetic autotrophicC. heterotrophicD. All of the above |
| Answer» Correct Answer - D | |
| 56. |
Genes for antibiotic resistance located in Or Bacterial resistance to antibiotics is a genetic trait, it is normally carried by theA. ChromosomeB. NucleusC. Cell wallD. Plasmid |
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Answer» Correct Answer - d R-factor is type of plasmid which contains genes for antibiotic resistance. |
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| 57. |
On the basis of rRNA genes, bacteria are divisible intoA. cyanobacteria and mycoplasmaB. actinomycetes and mycoplasmaC. bacteria and archaebacteriaD. Gram (+) and Gram (-) |
| Answer» Correct Answer - C | |
| 58. |
Prokaryotes are characterised byA. a true nucleus with double-layered nuclear membrane is absentB. well-developed nucleus with double-layered nuclear membrane presentC. presence of cell wall made of chitins, mucopolysaccharides and the absence of cell organelles like mitochondria and chloroplastsD. autotrophic in nature and only DNA is present |
| Answer» Correct Answer - C | |
| 59. |
Folds of plasma membrane in bacterial cells are known asA. episomesB. mesosomesC. spherosomesD. acrosomes |
| Answer» Correct Answer - B | |
| 60. |
Bacterial cells but not eukaryotic cells, possessA. photosynthetic pigmentsB. a nucleoid with circular chromosomeC. membrane-enclosed organellesD. a(9 + 2) arrangement of microtubules |
| Answer» Correct Answer - B | |
| 61. |
The hydrogen donor in bacterial photosyn- thesis is usuallyA. waterB. hydrogen sulphideC. sulphuric acidD. ammonia |
| Answer» Correct Answer - B | |
| 62. |
Bacterial cells can be strained withA. Mercuric chlorideB. Crystal violetC. Crystal violet and iodineD. Safranin |
| Answer» Correct Answer - c | |
| 63. |
Bacterial cells are usually enclosed by aA. chitinous capsuleB. slimy capsuleC. suberised capsuleD. lignified capsule |
| Answer» Correct Answer - B | |
| 64. |
Bacteria whose cell has only a curve/comma isA. vibrioB. cocciC. spirillaD. bacilli |
| Answer» Correct Answer - A | |
| 65. |
The blue-green algae are so called as they have in addition to green pigment chlorophyll, a blue pigment known asA. phycocyaninB. chromoplasmC. cyanophycinD. phycocerythrin |
| Answer» Correct Answer - A | |
| 66. |
Branched chain lipids occur in the cell membranes ofA. ArchaebacteriaB. MycoplasmaC. ActinomycetesD. Streptomyces |
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Answer» Correct Answer - a Branched chain lipids of cell membranes of archebacteria enable them to tolerate high temperature and high acidity. |
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| 67. |
Which of the following are likely to be present in deep sea waterA. Saprophytic fungiB. ArchaebacteriaC. EubacteriaD. Blue-green algae |
| Answer» Correct Answer - b | |
| 68. |
Which of the following are likely to be present in deep sea water?A. EubacteriaB. Blue-green algaeC. Saprophytic fungiD. Archaebacteria |
| Answer» Correct Answer - D | |
| 69. |
Bacterium, which is concerned with pertussis is:A. Bordetella pertussisB. BacillusC. DiplococcusD. Mycobacterium tuberculum |
| Answer» Correct Answer - A | |
| 70. |
The bacterium Bacillus thuringiensis is widely used in contemporary biology as a/anA. indicator of water pollutionB. insecticideC. agent for production of diary productsD. source of industrial enzyme |
| Answer» Correct Answer - B | |
| 71. |
The murein found in bacterial cell isA. Derivative of proteinB. Derivative of fatC. Derivative of organic acidsD. Derivative of sugars |
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Answer» Correct Answer - d The mucopeptide or murein is a polymer of two amino sugar namely N-acetylglucosamine (NAG) and N-acetyl muramic acid (NAM). |
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| 72. |
Which of the following is free-living aerobic non-photosynthetic nitrogen fixing bacteriumA. RhizonbiumB. AzotobacterC. NostocD. Azospirillum |
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Answer» Correct Answer - b Azotobacter (aerobic) is afree living `N_(2)`, fixing bacteria. This bacteria fix independently atmospheric nitrogen in their body and convert to organic nitrogen compounds. When they die, the organic nitrogen compounds of their body are made avaliable to higher plants through the activities of other bacteria. |
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| 73. |
Which of the following groups of plants are highly useful in increasing soil fertilityA. Red algaeB. FungiC. BacteriaD. Bryophytes |
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Answer» Correct Answer - c Bacteria causes `N_(2)` fixation. |
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| 74. |
Methanogens belong toA. Slime mouldsB. EubacteriaC. ArchaebacteriaD. Dinoflagellates |
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Answer» Correct Answer - c Methanogens, halophiles and thermoacidophiles are archaebacteria. |
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| 75. |
Which one of the following matching pairs is WRONGA. Bacterial cell wall-celluloseB. Bacterial ribosome-`16s` rRNAC. Bacterial flagella-proteinD. Bacterial glycocalyx-cellulose |
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Answer» Correct Answer - a Bacterial cell wall is made of peptidolycan. |
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| 76. |
The bacteria which move by the means of axil filament isA. NostocB. SpirochaetesC. E coliD. None of these |
| Answer» Correct Answer - B | |
| 77. |
Who recorded pleuropneumonia in cattlesA. PasteurB. TwortC. Knoll and RuskaD. Nocard and Roux |
| Answer» Correct Answer - d | |
| 78. |
Sex factor in bacteria isA. F-repliconB. Chromosomal repliconC. RNAD. Sex pilis |
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Answer» Correct Answer - a Sex factor or F-factor are extra-chromosomal DNA particle which either intergrate with main DNA or remain independent from main DNA. |
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| 79. |
Bacteria reproduce sexually byA. EndosporesB. TransformationC. ConidiaD. Exospores |
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Answer» Correct Answer - b It takes place by transferring DNA from capsulated to non-capsulated. |
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| 80. |
Which of the following is a rod-shaped bacterium?A. Bacillus subtilisB. Pneumococcus pneumoniaeC. Vibrio choleraeD. Sterptococcus nigricans |
| Answer» Correct Answer - A | |
| 81. |
Becteria were first discovered byA. Robert KochB. L. PasteurC. Robert HookeD. A.V. Leeuwenhoek |
| Answer» Correct Answer - d | |
| 82. |
Which of the following is a rod-shaped bacterium?A. Bacillus subtilisB. Pneumococcus pneumoniaeC. Vibrio cholerae D. Sterptococcus nigricans |
| Answer» Correct Answer - A | |
| 83. |
Becteria were first discovered byA. Av LeeuwenhoekB. Rebert HookeC. Robert KochD. Louis Pasteur |
| Answer» Correct Answer - A | |
| 84. |
The gram negative bacteria detect and responsed to chemicals in their surroundings byA. LipopolysaccharideB. Muramic acidC. PorinsD. Voluthin granules |
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Answer» Correct Answer - c Porins is a proteins, which is found in the cell of Gram negative bacteria. Which function as channels for the entry and exist of hydrophilic low molecular weight substances. |
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| 85. |
Mycoplasma are sensitive toA. streptomycinB. tetracyclinC. erythromycinD. neomycin |
| Answer» Correct Answer - B | |
| 86. |
Mycoplasma differs from virus in being sensitive toA. SugarB. TetracyclineC. ProteinD. Amino acid |
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Answer» Correct Answer - b Mycoplasma are senstive to tetracycline and resistant to penicillin, because they lack cell wall. |
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| 87. |
Mycoplasma are not sensitive toA. StreptomycinB. PenicillinC. ErythromycinD. Neomycin |
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Answer» Correct Answer - b Because mycoplasma lacks cell wall where as penicillin acts on cell wall. |
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| 88. |
Assertion : Some bacteria have the caoacity to retain Gram stain after treatement with acid alcohol. Reason : They are known as Gram positive as they are attracted towards positive pole under influence of electric current.A. If both the assertion and the reason are true and the reason is a correct explanation of the assertionB. If both the assertion and the reason are true and the reason is not a correct explanation of the assertionC. If the assertion is true but the reason is falseD. If both the assertion and reason are false |
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Answer» Correct Answer - c The cell wall of Gram-negative bacteria contains alcohol-soluble lipid, while the cell wall of Gram- positive bacteria lacks the lipids and therefore resist decolourisation and retain the primary stain, appearing violet. Gram-negative bacteria are decolorized by organic solvents and therefore, take the counter stain, appearing red. Gram +ve bacteria does not attracted towards positive pole under influence of electric current. |
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| 89. |
Antibiotics are mostly obtained fromA. bacteriaB. virusesC. angiospermsD. fungi |
| Answer» Correct Answer - A | |
| 90. |
Anoxygenic photosynthesis is characteristic ofA. SpirogyraB. ChalmydomonasC. UlvaD. Rhodosprillum |
| Answer» Correct Answer - D | |
| 91. |
Which of the following causes plague ?A. Salmonella typhimuriumB. Trichinella spiralisC. Yersinia/Pasteurella pestisD. Leishmania donevani |
| Answer» Correct Answer - C | |
| 92. |
Assertion Plague is a bacterial disease. Reason It is caused by Borrelia bergdorfteri, the vector of reservoir for plague is fleas of wild rodents.A. Both Assertion and Reason are true and Reason is the correct explanation of AssertionB. Both Assertion and Reason are true, but Reason is not the correct explanation of AssertionC. Assertion is true, but Reason is falseD. Assertion is false, but Reason is true |
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Answer» Correct Answer - C Plague is a bacterial disease caused by Yersinia pestis (Pasteurella pestis). The vector or reservoir for this disease are fleas of wild rodents, rats and squirrels. |
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| 93. |
Which of the following is a bacterial disease?A. Rust of wheatB. Potato leaf rollC. Sugarcane mosaicD. Brown rot of potato |
| Answer» Correct Answer - D | |
| 94. |
A prokaryotic autotrophic nitrogen fixing symbiont found in or Besides paddy fields, cyanobacteria are also found inside vergative part ofA. PisumB. AlnusC. CycasD. Cicer |
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Answer» Correct Answer - c Anabaena cycadae is a BGA found in coralloid roots of cycas. |
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| 95. |
In five kingdom classification, bacteria belong toA. ProtistaB. MoneraC. PlantaeD. Archaea |
| Answer» Correct Answer - B | |
| 96. |
The cyanobacteria are also referred to as:-A. protistsB. slime mouldsC. green algaeD. Blue-green algae |
| Answer» Correct Answer - D | |
| 97. |
Bacteria that uses chemical energy to fix `(CO_(2)` areA. photoautotrophsB. photoheterotrophsC. chemoautotrophsD. chemoheterotrophs |
| Answer» Correct Answer - C | |
| 98. |
Bacteria are made up ofA. Nucleic acidB. Only proteinsC. Nucleic acid and proteinsD. Nucleosides |
| Answer» Correct Answer - c | |
| 99. |
The cells of bacterium Staphylococcus remain arranged in the form ofA. PlateB. CubeC. Irregular clusterD. Chain |
| Answer» Correct Answer - c | |
| 100. |
Bacterial cell divides in every minute it takes one hour to fill up a cup. How much time be taken to fill half the cupA. 59 minutesB. 30 minutesC. 60 minutesD. 29 minutes |
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Answer» Correct Answer - a The number of bacteria becomes boubl after each division. |
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