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.
| 151. |
By using fluorescence property fluorescent antibody technique was developed by |
| A. | Kohler |
| B. | Coons |
| C. | Both and b |
| D. | None of these |
| Answer» C. Both and b | |
| 152. |
The size of the virus can be determined by |
| A. | Micrography |
| B. | Ultra-centrifugation at high speed |
| C. | Ultra-filteration |
| D. | All of these |
| Answer» E. | |
| 153. |
The antibody that is first formed after infection is |
| A. | IgG |
| B. | IgM |
| C. | IgD |
| D. | IgE |
| Answer» C. IgD | |
| 154. |
What is the strength of the bond between antigen and antibody? |
| A. | Affinity |
| B. | Avidity |
| C. | Covalent |
| D. | None of these |
| Answer» C. Covalent | |
| 155. |
The reaction of soluble antigen with antibody is known by |
| A. | Precipitation |
| B. | Flocculation |
| C. | Agglutination |
| D. | Complement fixation |
| Answer» B. Flocculation | |
| 156. |
Intensity of attraction between antigen and antibody molecule is known as |
| A. | Affiniy |
| B. | Avidity |
| C. | Reaction |
| D. | None of these |
| Answer» B. Avidity | |
| 157. |
Temperature required for pasteurization is |
| A. | Above 150oC |
| B. | Below 100oC |
| C. | 110oC |
| D. | None of these |
| Answer» C. 110oC | |
| 158. |
Bacteriophage capable of only lytic growth is called |
| A. | Temperate |
| B. | Avirulent |
| C. | Virulent |
| D. | None of these |
| Answer» B. Avirulent | |
| 159. |
The principle involved in the streak plate method is |
| A. | Separation |
| B. | Streaking |
| C. | Isolation |
| D. | Dilution |
| Answer» E. | |
| 160. |
At the temperature 160oC for one hour, complete sterilization occurs in |
| A. | Autoclave |
| B. | Hot air oven |
| C. | Laminar flow |
| D. | Incubator |
| Answer» C. Laminar flow | |
| 161. |
The bacterial cells participating in conjugation are |
| A. | Conjugant |
| B. | Fertile cells |
| C. | Exconjugants |
| D. | None of these |
| Answer» B. Fertile cells | |
| 162. |
The widely used yeast for the production of single cell protein is |
| A. | Saccharomyces cerevisiae |
| B. | Rhizopus |
| C. | Candida utilis |
| D. | All of the above |
| Answer» D. All of the above | |
| 163. |
For the production of ethanol the raw material used is |
| A. | Molasses |
| B. | Cellulose |
| C. | Sulphite waste liquor |
| D. | None of these |
| Answer» D. None of these | |
| 164. |
For the formation of cell-components the elements required are |
| A. | Nitrogen |
| B. | Oxygen |
| C. | Sulphur |
| D. | All of these |
| Answer» E. | |
| 165. |
The differentiate lactose and non-lactose fermentors, the medium used is |
| A. | Wilson & lair |
| B. | Blood Agar |
| C. | Tetra thionate broth |
| D. | Mac-Conkey s Agar |
| Answer» E. | |
| 166. |
To differentiate lactose and non-lactose fermentors the medium used is |
| A. | Mac Conkey s medium |
| B. | Stuart s medium |
| C. | Sugar medium |
| D. | Citrate medium |
| Answer» B. Stuart s medium | |
| 167. |
A gene that takes part in the synthesis of polypeptide is |
| A. | Structural gene |
| B. | Regulator gene |
| C. | Operator gene |
| D. | Promoter gene |
| Answer» B. Regulator gene | |
| 168. |
During cyclic phosphorylation NADP is formed or not. |
| A. | No NADP formation |
| B. | No NADP utilization |
| C. | NADP is converted into NADPH |
| D. | All are correct |
| Answer» B. No NADP utilization | |
| 169. |
Cyclic phosphorylation is generally present in |
| A. | Cyanobacteria |
| B. | Algae |
| C. | Bacteria |
| D. | Plants |
| Answer» B. Algae | |
| 170. |
Non-cyclic photophosphorylation is also known as |
| A. | Oxygenic photosynthesis |
| B. | Photosynthesis |
| C. | Anoxygenic photosynthesis |
| D. | Photophosphorylation |
| Answer» C. Anoxygenic photosynthesis | |
| 171. |
Amoxycillin is combined with clavulanic acid to inhibit |
| A. | DNA gyrace |
| B. | Cell synthesis |
| C. | Protein synthesis |
| D. | -lactamase enzymes |
| Answer» E. | |
| 172. |
The micro-organisms grow at high salinity are |
| A. | Osmophile |
| B. | Halophiles |
| C. | Both a and b |
| D. | None of these |
| Answer» D. None of these | |
| 173. |
Which of the following is called serum Hepatitis? |
| A. | HCV |
| B. | HAV |
| C. | HBV |
| D. | HIV |
| Answer» D. HIV | |
| 174. |
The bacteria, which is motile at 22oC but non-motile at 37oC is |
| A. | Tranformation |
| B. | Transduction |
| C. | Conjugation |
| D. | Cell fusion |
| Answer» E. | |
| 175. |
Rhabdo viruses are belonging to the family: |
| A. | Rhabdo viridae |
| B. | Toga viridae |
| C. | Paramyxo viridae |
| D. | None of these |
| Answer» B. Toga viridae | |
| 176. |
Intradermal test employed for diagnosis of LGV is |
| A. | Frei test |
| B. | Mantoux test |
| C. | Schick test |
| D. | Dick test |
| Answer» B. Mantoux test | |
| 177. |
In Gram positive bacteria, ratio of RNA to DNA is |
| A. | 8 : 1 |
| B. | 1 : 2 |
| C. | Almost equal |
| D. | None of these |
| Answer» B. 1 : 2 | |
| 178. |
Microorganisms usually make acetyl CO-A by oxidizing |
| A. | Acetic acid |
| B. | Pyruvic acid |
| C. | -ketoglutaric acid |
| D. | Fumaric acid |
| Answer» B. Pyruvic acid | |
| 179. |
Which of these is a trace element for bacteria? |
| A. | Mg+2 |
| B. | Na+ |
| C. | Ca+2 |
| D. | Mn+2 |
| Answer» C. Ca+2 | |
| 180. |
Genomic DNA is extracted, broken into fragments of reasonable size by a restriction endonuclease and then inserted into a cloning vector to generate chimeric vectors. The cloned fragments are called |
| A. | Clone |
| B. | Genomic library |
| C. | mRNA |
| D. | None of these |
| Answer» C. mRNA | |
| 181. |
Which one of the following mutagens act only on replicating DNA? |
| A. | Ethidium bromide |
| B. | Nitrosogeranidine |
| C. | Acridine orange |
| D. | None of above |
| Answer» D. None of above | |
| 182. |
Diagnosis of carrier of salmonella typhi may be shown by |
| A. | Fecal culture |
| B. | Bile culture |
| C. | Urine culture |
| D. | All of these |
| Answer» E. | |
| 183. |
Causative organism of whooping cough is |
| A. | Bordetella pertussis |
| B. | Bordetella parapertussis |
| C. | Bordetella bronchi septica |
| D. | None of these |
| Answer» B. Bordetella parapertussis | |
| 184. |
Different methods of strain improvement are |
| A. | Protoplast fusion |
| B. | Recombinant DNA technique |
| C. | Genetic recombination |
| D. | All of these |
| Answer» E. | |
| 185. |
All of the following are bacteriostatic chemotherapeutic agents except |
| A. | Bacitracin |
| B. | Chloramphenicol |
| C. | Novobiocin |
| D. | Tetracycline |
| Answer» B. Chloramphenicol | |
| 186. |
The characteristic shape of the bacteria is maintained because of |
| A. | Capsule |
| B. | Cell wall |
| C. | Cell membrane |
| D. | Slime layer |
| Answer» C. Cell membrane | |
| 187. |
The ion that is required in trace amounts for the growth of bacteria is |
| A. | Calcium |
| B. | Magnesium |
| C. | Cobalt |
| D. | Sodium |
| Answer» D. Sodium | |
| 188. |
For amy lase product ion the m icro organism required is |
| A. | subtilis |
| B. | S. cereviceae |
| C. | A. nigar |
| D. | None of these |
| Answer» B. S. cereviceae | |
| 189. |
How much of globulin is present in human serum? |
| A. | 8% |
| B. | 12% |
| C. | 16% |
| D. | 4% |
| Answer» B. 12% | |
| 190. |
The main feature of prokaryotic organism is |
| A. | Absence of locomotion |
| B. | Absence of nuclear envelope |
| C. | Absence of nuclear material |
| D. | Absence of protein synthesis |
| Answer» C. Absence of nuclear material | |
| 191. |
Agglutination reaction is strongest with the immunoglobulin: |
| A. | IgM |
| B. | IgG |
| C. | IgA |
| D. | IgD |
| Answer» B. IgG | |
| 192. |
Immunoglobulin which cannot activate complement |
| A. | IgM |
| B. | IgE |
| C. | IgA |
| D. | IgG |
| Answer» C. IgA | |
| 193. |
Aldehydes, which are most powerful disinfectants |
| A. | Formaldehyde |
| B. | Acetaldehyde |
| C. | Glutamal aldehyde |
| D. | Both a and c |
| Answer» E. | |
| 194. |
What is the technique for quantitative estimation of immunoglobulin? |
| A. | Single diffusion in one dimension |
| B. | Single diffusion in two dimension |
| C. | Double diffusion in one dimension |
| D. | Double diffusion in two dimension |
| Answer» C. Double diffusion in one dimension | |
| 195. |
All of the following are energy source of bacteria except |
| A. | Oxidation of inorganic compounds |
| B. | Oxidation of organic compounds |
| C. | Absorption of heat |
| D. | Utilisation of visible light |
| Answer» D. Utilisation of visible light | |
| 196. |
Syndromes associated with Human T lymphotropic virus type I(HTLV-I) are |
| A. | Adult T-cell lymphoma |
| B. | Hairy cell leukemia |
| C. | Adult T cell leukemia |
| D. | All of these |
| Answer» C. Adult T cell leukemia | |
| 197. |
In the citric acid production, the pH to be maintained in the fernmenter is |
| A. | 7.0 |
| B. | 5.0 to 6.0 |
| C. | 8.0 to 9.0 |
| D. | 1.0 to 6.0 |
| Answer» C. 8.0 to 9.0 | |
| 198. |
For acetic acid production the methods followed are |
| A. | Orleans process |
| B. | Rapid process |
| C. | Submerged process |
| D. | All of these |
| Answer» E. | |
| 199. |
Multiple antibiotic resistance is mediated by |
| A. | Episome |
| B. | Plasmid |
| C. | Colplasmid |
| D. | Both b and c |
| Answer» C. Colplasmid | |
| 200. |
Antibiotic produced from streptomyces orientalis is |
| A. | Streptomycin |
| B. | Penicillin |
| C. | Vancomycin |
| D. | Both a and b |
| Answer» D. Both a and b | |