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.
| 251. |
A human cell containing 22 autosome and a Y chromosome is probably a |
| A. | Male somatic cell |
| B. | Zygote |
| C. | Female somatic cell |
| D. | Sperm cell |
| Answer» C. Female somatic cell | |
| 252. |
Biological false reaction in VDRL is related to |
| A. | Lepra bacilli |
| B. | Corynebacterium diphtheria |
| C. | Cl.welchi |
| D. | None of these |
| Answer» B. Corynebacterium diphtheria | |
| 253. |
Which of the following test is specific for Brucellosis? |
| A. | Frei |
| B. | Weil |
| C. | Castaneda strip |
| D. | Rose water |
| Answer» D. Rose water | |
| 254. |
The most important energy-yielding reaction for an aerobic organism is |
| A. | Glycosi |
| B. | EMP |
| C. | KDPG |
| D. | Both b and c |
| Answer» E. | |
| 255. |
Thermo resistant bacteria are important in the preservation of foods by |
| A. | Freezing |
| B. | Canning |
| C. | Chemicals |
| D. | Irradiation |
| Answer» C. Chemicals | |
| 256. |
Wh ich of the fo l low ing organ isms requires tryptophan for growth? |
| A. | H.influenza |
| B. | Vibrio |
| C. | Gonococci |
| D. | S.typhi |
| Answer» E. | |
| 257. |
The total no. of genes in the group of same individuals is |
| A. | Genome |
| B. | Gene map |
| C. | Gene pool |
| D. | None of these |
| Answer» D. None of these | |
| 258. |
The ce l ls hav ing F p lasm id in the chromosomes were termed as |
| A. | Hfr |
| B. | F |
| C. | Hbr |
| D. | C+ |
| Answer» B. F | |
| 259. |
The diagrammatic representation of the total no. of genes in DNA is |
| A. | Genome |
| B. | Gene map |
| C. | Gene-structure |
| D. | Chromatin |
| Answer» C. Gene-structure | |
| 260. |
The fo l low ing are used for the preservation of virus, except |
| A. | Freezing ( 20 C 70 C) |
| B. | Lyophilization |
| C. | Ether |
| D. | Formaldehyde |
| Answer» D. Formaldehyde | |
| 261. |
In the sigmoid curve (or) growth curve of bacteria how many stages are there |
| A. | 3 |
| B. | 4 |
| C. | 2 |
| D. | 5 |
| Answer» C. 2 | |
| 262. |
Nitrite is converted into nitrate by the bacteria |
| A. | Nitrosomona |
| B. | Nitrosocytes |
| C. | Nitrobacter |
| D. | Azatobacter |
| Answer» D. Azatobacter | |
| 263. |
Growth curve does not include following phases of bacteria |
| A. | Decline phase |
| B. | Stationary phase |
| C. | Lag phase |
| D. | Synchronous growth |
| Answer» E. | |
| 264. |
The parasite related to ancylostoma duodenale is |
| A. | Wuchereria bancrofti |
| B. | Necatur americanes |
| C. | Loa loa |
| D. | Trichinella spiralis |
| Answer» C. Loa loa | |
| 265. |
The most important vitamin for the growth of bacteria is |
| A. | B-complex |
| B. | Vitamin A |
| C. | Vitamin D |
| D. | Vitamin C |
| Answer» B. Vitamin A | |
| 266. |
The function of (THFA) Tetrahydrofolic acid coenzyme include |
| A. | Amino acid synthesis |
| B. | Thymidine synthesis |
| C. | Protein synthesis |
| D. | Both a and b |
| Answer» E. | |
| 267. |
For ster i l izat ion of fermentat ion equipment the method followed is |
| A. | Radiation |
| B. | Chemicals |
| C. | Heating |
| D. | All of these |
| Answer» E. | |
| 268. |
Because of denaturat ion, ant igens become functionless, these are called: |
| A. | Cross-reactive antigens |
| B. | Epitopes |
| C. | Hidden epitopes |
| D. | Forssman antigens |
| Answer» D. Forssman antigens | |
| 269. |
Wh ich of the fo l low ing is ion iz ing radiation? |
| A. | U.V. ray |
| B. | IR |
| C. | -rays |
| D. | None of these |
| Answer» D. None of these | |
| 270. |
Comp lement based agg lut inat ion reaction is known as |
| A. | Haem agglutination |
| B. | Coplement fixation |
| C. | Conglutination |
| D. | Schultz Dale Phenomenon |
| Answer» B. Coplement fixation | |
| 271. |
In which type of material parasite in the exoerythrocytic stage absent? |
| A. | P.ovale |
| B. | P.vivax |
| C. | P.falciparum |
| D. | P. malariae |
| Answer» D. P. malariae | |
| 272. |
Which of the following involves the formation of nitrate from ammonia |
| A. | Ammonification |
| B. | Denitrification |
| C. | Nitrification |
| D. | Nitrogen fixation |
| Answer» D. Nitrogen fixation | |
| 273. |
The character acquired by the cell due to recombination is |
| A. | Inheritable |
| B. | Syppressed |
| C. | Dominating |
| D. | Heritable |
| Answer» E. | |
| 274. |
Mountax reaction is used for detection of |
| A. | T |
| B. | b. Diphtheria |
| C. | Cholera |
| D. | None of these |
| Answer» B. b. Diphtheria | |
| 275. |
Industrial Production of Vitamin-B12 is from |
| A. | Propionibacterium sps. |
| B. | Pseudomonas sps. |
| C. | Both a and b |
| D. | None of these |
| Answer» D. None of these | |
| 276. |
Which antibody is called millionaire molecule? |
| A. | IgA |
| B. | IgM |
| C. | IgG |
| D. | IgD |
| Answer» C. IgG | |
| 277. |
Industrial alchohol will be produced by using starter culture |
| A. | Top yeast |
| B. | Middle yeast |
| C. | Bottom yeast |
| D. | Feeder yeast |
| Answer» D. Feeder yeast | |
| 278. |
The greatest number of tubercle bacilli is present in |
| A. | Large sized tuberculomas |
| B. | Miliary tuberculosis |
| C. | Tuberculous lymphadinitis |
| D. | Tuberculous cavity of the lung |
| Answer» E. | |
| 279. |
Western blotting is a technique used in the determination of |
| A. | DNA |
| B. | RNA |
| C. | Protein |
| D. | Polysaccharides |
| Answer» B. RNA | |
| 280. |
Upto the product ion of des irab le production in the fermentor is called |
| A. | Upstream process |
| B. | Downstream process |
| C. | Surface fermentation |
| D. | None of these |
| Answer» C. Surface fermentation | |
| 281. |
The best studied example for specialized transduction is |
| A. | P1 phage |
| B. | P22 phage |
| C. | -phage |
| D. | Both a and c |
| Answer» D. Both a and c | |
| 282. |
The process of formation of mesozygote is called |
| A. | Meromixi |
| B. | Exozygote |
| C. | Mitosis |
| D. | Meiosis |
| Answer» B. Exozygote | |
| 283. |
The reproduction rate is equal to death rate in which stage |
| A. | Decline phase |
| B. | Stationary phase |
| C. | Lag phase |
| D. | Log phase |
| Answer» E. | |
| 284. |
How much time a bacterium take for the complete duplication? |
| A. | 30 min. |
| B. | 10 min. |
| C. | 20 min. |
| D. | 25 min. |
| Answer» D. 25 min. | |
| 285. |
Recombination process occurring through the mediation of phages is |
| A. | Conjunction |
| B. | Transduction |
| C. | Transformation |
| D. | Transfection |
| Answer» C. Transformation | |
| 286. |
Counter immunoelectrophoresis is useful for detection of |
| A. | One antigen/antibody |
| B. | Two antigens/antibody |
| C. | More than two |
| D. | None of these |
| Answer» B. Two antigens/antibody | |
| 287. |
In Elisa technique, the antibodies are labeled by |
| A. | Acridine orange |
| B. | Alkaline phosphate |
| C. | Neutral red |
| D. | Bromothymol blue |
| Answer» C. Neutral red | |
| 288. |
The by-product during streptomycin production is |
| A. | Vitamin A |
| B. | Proline |
| C. | Vitamin B12 |
| D. | None of these |
| Answer» D. None of these | |
| 289. |
Treponema pa l l idum can be best indentified using |
| A. | Fluorescence microscope |
| B. | Bright field microscope |
| C. | Dark field microscope |
| D. | Flourescence microscope |
| Answer» C. Dark field microscope | |
| 290. |
Hybridoma formation in hybridoma technique is from |
| A. | Spleen cell Myeloma cell |
| B. | Spleen cell Spleen cell |
| C. | Myeloma cell Myeloma cell |
| D. | None of these |
| Answer» B. Spleen cell Spleen cell | |
| 291. |
The method of DNA replication proposed by Watson and Crick is |
| A. | Semi conservative |
| B. | Conservative |
| C. | Dispersive |
| D. | Rolling loop |
| Answer» B. Conservative | |
| 292. |
DNA transfer from one bacterium to another through phages is termed as |
| A. | Transduction |
| B. | Induction |
| C. | Transfection |
| D. | Infection |
| Answer» B. Induction | |
| 293. |
Sero conservation in HIV infection takes place in |
| A. | 3 week |
| B. | 6 weeks |
| C. | 9 weeks |
| D. | 12 weeks |
| Answer» D. 12 weeks | |
| 294. |
Cell mediated immunity can be identified by |
| A. | Sheep bred blood corpuscles roasette formation |
| B. | Microphase inhibiting factor |
| C. | Skin test for delayed hyper sensitivity |
| D. | All of these |
| Answer» E. | |
| 295. |
Which type of antibodies will associate in blood cell coagulation? |
| A. | IgE |
| B. | IgA |
| C. | IgM |
| D. | IgG |
| Answer» D. IgG | |
| 296. |
Which of the following are acid fast structures? |
| A. | Mycobacteria |
| B. | Bacterial spores |
| C. | Nocardia |
| D. | All of these |
| Answer» E. | |
| 297. |
If more than one stain is used, such staining is called |
| A. | Simple staining |
| B. | Negative staining |
| C. | Differential staining |
| D. | None of these |
| Answer» D. None of these | |
| 298. |
In Tuberculosis therapy mainly used antibiotic is |
| A. | Penicillin |
| B. | Streptomycin |
| C. | Chloramphenol |
| D. | Cycloserine |
| Answer» E. | |
| 299. |
A simple asexual spore which develops by budding is known as |
| A. | Chlamydospore |
| B. | Blastospore |
| C. | Arthospore |
| D. | Conidia |
| Answer» C. Arthospore | |
| 300. |
Passive immunity lasts for the period of about |
| A. | 10 days |
| B. | 2 3 months |
| C. | 10 years |
| D. | None of the above |
| Answer» B. 2 3 months | |