MCQOPTIONS
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MCQOPTIONS
This section includes 375 Mcqs, each offering curated multiple-choice questions to sharpen your Bachelor of Agriculture (BSc agri) knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Light gathering capacity of Microscope is called |
| A. | Numerical aperture |
| B. | Angular aperture |
| C. | Both a and b |
| D. | None of these |
| Answer» B. Angular aperture | |
| 52. |
If 10x and 40x objectives are used (air is the medium), the numerical aperture is |
| A. | 1.5 |
| B. | 2.0 |
| C. | 1.0 |
| D. | 1.8 |
| Answer» D. 1.8 | |
| 53. |
Source of light in fluorescence microscopy is from |
| A. | Mercury lamp |
| B. | Sunlight |
| C. | Both a and b |
| D. | None of these |
| Answer» B. Sunlight | |
| 54. |
The e lectron passed out from the specimen are called |
| A. | Primary electron |
| B. | Secondary electrons |
| C. | Tertiary electrons |
| D. | None of these |
| Answer» C. Tertiary electrons | |
| 55. |
To prepare vaccine for small pox, the material used by Edward Jenner is |
| A. | Small pox material |
| B. | Chicken pox material |
| C. | Cow-pox material |
| D. | Measles material |
| Answer» D. Measles material | |
| 56. |
Hybridoma technique was first discovered by. |
| A. | Kohler and Milstein |
| B. | Robert Koch |
| C. | D Herelle |
| D. | Land Steiner |
| Answer» B. Robert Koch | |
| 57. |
Antiseptic methods were first introduced by |
| A. | Lord Lister |
| B. | Iwanowski |
| C. | Beijernick |
| D. | Edward Jenner |
| Answer» B. Iwanowski | |
| 58. |
Causative organism of diphtheria was first demonstrated by |
| A. | Robert Koch |
| B. | Lois Pasteur |
| C. | Klebs and Loeffler |
| D. | Volhard and Fahr |
| Answer» D. Volhard and Fahr | |
| 59. |
Hanging drop method for motility study was first introduced by |
| A. | Robert Koch |
| B. | Louis Pasteur |
| C. | Jenner |
| D. | Leeuwenhock |
| Answer» E. | |
| 60. |
The method in which the cells are frozen dehydrated is called |
| A. | Pasteurization |
| B. | Dessication |
| C. | Disinfection |
| D. | Lypophilization |
| Answer» E. | |
| 61. |
Wh ich of the fo l low ing method of sterilization has no effect on spores? |
| A. | Drying |
| B. | Hot air oven |
| C. | Autoclave |
| D. | None of these |
| Answer» B. Hot air oven | |
| 62. |
Wet mount slide preparations are used in microbiology as they allow to see |
| A. | Size and shape of individual organisms |
| B. | Characteristic arrangement or grouping of cells |
| C. | Motility of the organism |
| D. | All of these |
| Answer» E. | |
| 63. |
Industrial microbiology, mainly depends on the phenomenon |
| A. | Pasteurisation |
| B. | Fermentation |
| C. | Vaccination |
| D. | Both b and c |
| Answer» C. Vaccination | |
| 64. |
Basic principle in industrial microbiology is |
| A. | Suitable growth conditions |
| B. | Fermentation |
| C. | Providing aseptic conditions |
| D. | All of these |
| Answer» C. Providing aseptic conditions | |
| 65. |
Sporadic summer diarrhea may be caused by |
| A. | E.coli |
| B. | Enterobacter |
| C. | Hafnia |
| D. | Serratia |
| Answer» B. Enterobacter | |
| 66. |
Viral genome that can become integrated into bacterial genome is called |
| A. | Prophage |
| B. | Temperate phage |
| C. | Bacteriophage |
| D. | Metaphage |
| Answer» B. Temperate phage | |
| 67. |
In electron microscope, what material is used as an objective lense? |
| A. | Magnetic coils |
| B. | Superfine glass |
| C. | Aluminium foils |
| D. | Electrons |
| Answer» B. Superfine glass | |
| 68. |
The resolution power of the compound microscope is |
| A. | 0.2 micron |
| B. | 0.2 millimeter |
| C. | 0.2 Angstrom units |
| D. | 0.2 centimeter |
| Answer» B. 0.2 millimeter | |
| 69. |
The spores of th bacteria which can withstand the moist heat effect also |
| A. | Bacillus subtilis |
| B. | Coxiella burnetti |
| C. | Bacillus stearothermophilus |
| D. | Pseudomonas |
| Answer» D. Pseudomonas | |
| 70. |
Lymphogranuloma venerum (LGV) is a sexually transmitted disease is caused by |
| A. | Copthalmia |
| B. | C.trachomatis |
| C. | C.pneumonias |
| D. | C.psittasi |
| Answer» C. C.pneumonias | |
| 71. |
Spores of actinomycetes are very sensitive, killed at room temperature of |
| A. | 52oC for 30 min. |
| B. | 65oC for 30 min. |
| C. | 70oC for 30 min. |
| D. | 43oC for 30 min. |
| Answer» C. 70oC for 30 min. | |
| 72. |
The treatment required for small bodies of water is |
| A. | Disinfection |
| B. | Filtration |
| C. | Purification |
| D. | All of these |
| Answer» E. | |
| 73. |
the outstanding example of traditional microbial fermentation product is |
| A. | Vinegar |
| B. | Penicillin |
| C. | Citric acid |
| D. | Tetracyclin |
| Answer» B. Penicillin | |
| 74. |
In alchoholic fermentation, CO2 is evolved during |
| A. | Decarboxylatin of pyruvic acid |
| B. | Formation of acetaldehyde |
| C. | Oxidation of acetaldehyde |
| D. | Both a and b |
| Answer» E. | |
| 75. |
What is the similarity between IgM & IgG? |
| A. | A compliment fixation |
| B. | Placental transport |
| C. | Heat stability at 56oC |
| D. | Sedimentation coefficient |
| Answer» B. Placental transport | |
| 76. |
The most commonly used microorganism in alchohol fermentation is |
| A. | A spergilus niger |
| B. | Bacillus subtilis |
| C. | Sacharomyces cerevisiae |
| D. | Escherichia coli |
| Answer» B. Bacillus subtilis | |
| 77. |
The role that human play in the plague life cycle is |
| A. | Secondary reservoir |
| B. | Primary transmission vector |
| C. | Primary host |
| D. | Accidental intruder in rat flea cycle |
| Answer» E. | |
| 78. |
Those fungi which do not have a sexual stage are classified as |
| A. | Phycomycete |
| B. | Ascomycetes |
| C. | Basidiomycetes |
| D. | Fungi imperfecti |
| Answer» E. | |
| 79. |
The no. of hydrogen bonds existing between Guanine and Cytosine are |
| A. | 5 |
| B. | 2 |
| C. | 3 |
| D. | None of these |
| Answer» D. None of these | |
| 80. |
Optimum growth temperature is greater that 45oC is |
| A. | Mesophile |
| B. | Thermophiles |
| C. | Psychrophiles |
| D. | None of these |
| Answer» B. Thermophiles | |
| 81. |
The inorganic forms of nitrogen, which are accepted by bacteria are |
| A. | Nitrate |
| B. | Nitrites |
| C. | Ammonium salts |
| D. | All of these |
| Answer» E. | |
| 82. |
The distance between each turn in the helical strand of DNA is |
| A. | 20 Ao |
| B. | 34 Ao |
| C. | 28 Ao |
| D. | 42 Ao |
| Answer» C. 28 Ao | |
| 83. |
Phosphorous is an essential component of |
| A. | Nucleotides |
| B. | Nucleic acids |
| C. | Phospholipids and Heichoic acids |
| D. | All the above |
| Answer» E. | |
| 84. |
Which test is used for detecting susceptibility of an individual to diphtheria toxin? |
| A. | Schick test |
| B. | Dick test |
| C. | V-P test |
| D. | Precipitin test |
| Answer» B. Dick test | |
| 85. |
Metachromatic granules are chemically composed of |
| A. | Lipids |
| B. | Proteins |
| C. | Polymetaphosphates |
| D. | Polysaccharide |
| Answer» D. Polysaccharide | |
| 86. |
Amoebic dysentery in humans is caused by |
| A. | Plasmodium |
| B. | Paramecium |
| C. | Yeast |
| D. | Entamoeba histolytica |
| Answer» E. | |
| 87. |
The following characters are true about Neisseria gonorrhoeae except |
| A. | Gram-negative, aerobic bacteria |
| B. | Non-motile diplococci |
| C. | Oxidase positive organisms |
| D. | Air borne infection |
| Answer» E. | |
| 88. |
A study involving analysis of risk for genetic defects in a family is |
| A. | Genetic Engineering |
| B. | Genetic counseling |
| C. | Genetic drift |
| D. | Genetic equilibrium |
| Answer» E. | |
| 89. |
The Lipid content present in Gram positive bacterial cell-wall is |
| A. | 1-10 % |
| B. | 1-5 % |
| C. | 2-8 % |
| D. | None of these |
| Answer» C. 2-8 % | |
| 90. |
Human papillomavirus causes following tumors: |
| A. | Hepatic carcinoma |
| B. | Cervical cancer |
| C. | Condyloma acuminatum |
| D. | Plantar wart |
| Answer» B. Cervical cancer | |
| 91. |
Streptococcus pyogens produces all of the following lesions, except |
| A. | Impetigo contagiosa |
| B. | Erysipeals |
| C. | Boil |
| D. | Paronchia |
| Answer» E. | |
| 92. |
Rickettsiae stained by this technique responds as |
| A. | Gram positive |
| B. | Gram negative |
| C. | Between positive and negative |
| D. | None of these |
| Answer» C. Between positive and negative | |
| 93. |
Most molds are capable of growing in the temperature range between |
| A. | 0o 25oC |
| B. | 0o 35oC |
| C. | 10o 25oC |
| D. | 10o 35oC |
| Answer» C. 10o 25oC | |
| 94. |
Alginic acids and its salts are obtained from the wall of |
| A. | Red algae |
| B. | Brown algae |
| C. | Green algae |
| D. | Red and brown algae |
| Answer» C. Green algae | |
| 95. |
AIDS patients suffer from pneumoniae due to |
| A. | Pneumocystisis carinii |
| B. | Cryptospodidium |
| C. | S.pneumoniae |
| D. | Toxoplasma |
| Answer» E. | |
| 96. |
Streptococcus forms causes which type of infections? |
| A. | Fever |
| B. | Zoonotic |
| C. | Pyogenic |
| D. | None of these |
| Answer» E. | |
| 97. |
Streptococcus pyogenes classification is based on |
| A. | Protein M |
| B. | Protein T |
| C. | Protein R |
| D. | Polysaccharide C |
| Answer» B. Protein T | |
| 98. |
A mutation causing a substitution of one amino acid is called |
| A. | Point mutation |
| B. | Silent mutation |
| C. | Missence mutation |
| D. | None of these |
| Answer» D. None of these | |
| 99. |
Teichoic acids and Teichuronic acids are found in |
| A. | Gram positive bacteria |
| B. | Gram negative bacteria |
| C. | Fungi |
| D. | None of these |
| Answer» B. Gram negative bacteria | |
| 100. |
6-amino penicillic acid is prepared from penicillin sps by |
| A. | Acylase |
| B. | Punicillin acylase |
| C. | Penicillinone |
| D. | None of these |
| Answer» C. Penicillinone | |