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.
| 301. |
Immediate type of hypersensitivity reactions are mediated by |
| A. | T-cell |
| B. | -cells |
| C. | Mast cells |
| D. | Macrophages |
| Answer» C. Mast cells | |
| 302. |
To transfer cultures from one place to another, the device used is |
| A. | Slant |
| B. | Needle |
| C. | Inoculation loop |
| D. | Autoclave |
| Answer» C. Inoculation loop | |
| 303. |
Immediate type hypersensitivity reactions are |
| A. | Type-I |
| B. | Type-II |
| C. | Type-III |
| D. | All a, b and c |
| Answer» E. | |
| 304. |
In falciparum malaria, all of the following stages are seen except |
| A. | Ring stage |
| B. | Schizont |
| C. | Gametocyte |
| D. | None of these |
| Answer» C. Gametocyte | |
| 305. |
The antibiotic produced from Bacillus subtilis is |
| A. | Vancomycin |
| B. | Bactiracin |
| C. | Both a and b |
| D. | None of these |
| Answer» C. Both a and b | |
| 306. |
Differential staining of bacteria spore is related to |
| A. | Albert s staining |
| B. | Lugol s staining |
| C. | Moller s staining |
| D. | Indian ink preparation |
| Answer» D. Indian ink preparation | |
| 307. |
If the source of energy for bacteria is from chemical compounds they are said to be |
| A. | Phototrophs |
| B. | Autotrophs |
| C. | Chemotrophs |
| D. | Chemolithotroph |
| Answer» D. Chemolithotroph | |
| 308. |
The properties common to Gram positive and negative cell walls are |
| A. | Equal susceptibility to hydrolysis by lysozyme |
| B. | Peptide crosslinks between polysaccharides |
| C. | Rigid peptoglycon activity |
| D. | Greater resistance to drying than vegetative cell. |
| Answer» E. | |
| 309. |
Delayed type of hypersensitivity is seen in |
| A. | Penicillin allergy |
| B. | Contact dermatitis |
| C. | Arthus reaction |
| D. | Anaphylaxis |
| Answer» C. Arthus reaction | |
| 310. |
Salmonella which can cause prolong septicaemia. |
| A. | Salmonella anetum |
| B. | Salmonella cholerasuis |
| C. | Salmonella typhimurium |
| D. | Salmonella entritidis |
| Answer» C. Salmonella typhimurium | |
| 311. |
Which of the following are gas producing Salmonella? |
| A. | S.typhi |
| B. | S.enteritidis |
| C. | S.cholerasuis |
| D. | S.typhimurium |
| Answer» C. S.cholerasuis | |
| 312. |
Prozone phenomenon is encountered in |
| A. | A typical mycobacteria |
| B. | Brucella |
| C. | Streptococcus |
| D. | Bordetella pertusis |
| Answer» C. Streptococcus | |
| 313. |
The raw material for citric acid production is |
| A. | Corn |
| B. | Molasses |
| C. | Starch |
| D. | None of these |
| Answer» B. Molasses | |
| 314. |
If the microorganisms are allowed to nutrient medium is called |
| A. | Submerged fermentation |
| B. | Surface fermentation |
| C. | Dual fermentation |
| D. | All of these |
| Answer» C. Dual fermentation | |
| 315. |
The enzyme required for DNA from RNA template: |
| A. | RNA polymerase |
| B. | Reverse transcriptase |
| C. | DNA polymerase |
| D. | Terminal transferase |
| Answer» C. DNA polymerase | |
| 316. |
Vacc ines are prepared from k i l led microbes, they are |
| A. | Inactivated (killed) vaccine |
| B. | Attenuated vaccines |
| C. | Autogenous vaccine |
| D. | None of these |
| Answer» B. Attenuated vaccines | |
| 317. |
Incubation period for infective Hepatitis disease |
| A. | 45 80 day |
| B. | 15 35 days |
| C. | 35 50 days |
| D. | 5 15 days |
| Answer» E. | |
| 318. |
The major immunoglobulin present in the human serum is |
| A. | IgG |
| B. | IgA |
| C. | IgE |
| D. | IgG |
| Answer» B. IgA | |
| 319. |
Reverse transcriptase is an enzyme involved in the synthesis of |
| A. | DNA |
| B. | Soluble RNA |
| C. | m-RNA from DNA |
| D. | Nucleotides |
| Answer» B. Soluble RNA | |
| 320. |
Griffith (1928) reported the phenomenon of transformation first in |
| A. | H. influenzae |
| B. | Bacillus species |
| C. | Pneumococci |
| D. | E.coli |
| Answer» D. E.coli | |
| 321. |
Clostridium acetobutylicum is used for the production of |
| A. | Acetone - Butanol |
| B. | Ethanol |
| C. | Vitamin-B12 |
| D. | None of these |
| Answer» C. Vitamin-B12 | |
| 322. |
Raw-material used for the production of alcohol is |
| A. | Molasses |
| B. | Starch |
| C. | Sulphite waste water |
| D. | All of these |
| Answer» E. | |
| 323. |
In the production of ethanol industrially the yeast used is |
| A. | K.pneumoniae |
| B. | Kluyreromyces fragilis |
| C. | S. cerevisiae |
| D. | Both b and c |
| Answer» E. | |
| 324. |
If the microbes used in the vaccine are obtained from patient, they are |
| A. | Anti viral vaccines |
| B. | Anti bacterial vaccines |
| C. | Autogenous vaccines |
| D. | None of these |
| Answer» D. None of these | |
| 325. |
Which of the following is an example of RNA virus? |
| A. | SV 40 |
| B. | T4 phage |
| C. | Tobacco mosaic virus |
| D. | Adeno virus |
| Answer» D. Adeno virus | |
| 326. |
A common laboratory method of cultivating anaerobic micro-organisms is |
| A. | Gas pack system |
| B. | Brewer jar system |
| C. | Pyrogallic acid over the cotton |
| D. | None of these |
| Answer» D. None of these | |
| 327. |
The utilization of light energy to drive the synthesis of ATP is called as |
| A. | Photolysis |
| B. | Photophosphorylation |
| C. | Photosynthesis |
| D. | Respiration |
| Answer» D. Respiration | |
| 328. |
Which of the following does not inhibit cell wall synthesis? |
| A. | Penicillin |
| B. | Carbenicillin |
| C. | Amikacin |
| D. | Vancomycin |
| Answer» D. Vancomycin | |
| 329. |
The number of ATP molecules formed during cyclic phosphorylation are |
| A. | One |
| B. | Two |
| C. | Four |
| D. | Six |
| Answer» E. | |
| 330. |
In the synthesis of cell components the major element required is |
| A. | Nitrogen |
| B. | Sulphur |
| C. | Carbon |
| D. | Oxygen |
| Answer» D. Oxygen | |
| 331. |
Artificial transformation in laboratory is carried out by treating the cells with |
| A. | MgCl2 |
| B. | Cacl2 |
| C. | NaCl |
| D. | HCl |
| Answer» C. NaCl | |
| 332. |
Aspergillus niger is used generally for the production of |
| A. | Ethanol |
| B. | Penicillin |
| C. | Citric acid |
| D. | Lactic acid |
| Answer» D. Lactic acid | |
| 333. |
Virus causing mumps is also responsible for |
| A. | Measle |
| B. | Hepatitis A |
| C. | Rabies |
| D. | Variola |
| Answer» B. Hepatitis A | |
| 334. |
Viruses which have teratogenic property are |
| A. | Herpes simplex virus |
| B. | Cytomegalovirus |
| C. | Rubella virus |
| D. | All of these |
| Answer» E. | |
| 335. |
In enteric fever, the organ lodging maximum number of the organism is |
| A. | Liver |
| B. | Gall bladder |
| C. | Small intestine |
| D. | Large intestine |
| Answer» C. Small intestine | |
| 336. |
Laboratory diagnosis of enteric fever is based on |
| A. | Blood culture |
| B. | Urine and stool culture |
| C. | Widal test |
| D. | All of the above |
| Answer» E. | |
| 337. |
Rheumatic fever is most commonly caused by |
| A. | Str. viridan |
| B. | Str. pyogenes |
| C. | Stph. aures |
| D. | None of these |
| Answer» C. Stph. aures | |
| 338. |
For effective sterilization in an autoclave the temperature obtained is |
| A. | 50oC |
| B. | 100oC |
| C. | 120oC |
| D. | 180oC |
| Answer» D. 180oC | |
| 339. |
Immunoglobin which are found in asthma at elevated level: |
| A. | IgA |
| B. | IgE |
| C. | IgM |
| D. | IgD |
| Answer» C. IgM | |
| 340. |
The most abundant antibody found in serum is |
| A. | IgA 1 |
| B. | IgG 1 |
| C. | IgG 2 |
| D. | IgG 3 |
| Answer» B. IgG 1 | |
| 341. |
Disease that affects many people at different countries is termed as |
| A. | Sporadic |
| B. | Pandemic |
| C. | Epidemic |
| D. | Endemic |
| Answer» C. Epidemic | |
| 342. |
A number of viruses are known to infect mycoplasmas, called |
| A. | Bacteriophages |
| B. | Mycoplasma phages |
| C. | Virions |
| D. | Tiny strains |
| Answer» C. Virions | |
| 343. |
Dengue virus is transmitted from man to man by the |
| A. | Sand fly |
| B. | Ticks |
| C. | Aedes aegypti |
| D. | Culex |
| Answer» D. Culex | |
| 344. |
Which organism is responsible for causing fever to a man dealing with goats? |
| A. | Trepanema Pallidum |
| B. | M.tuberculosis |
| C. | Clostridium novyl |
| D. | Brucella melitensis |
| Answer» E. | |
| 345. |
The extra cellular infections virus particle is called |
| A. | Capsid |
| B. | Nucleocapsid |
| C. | Virion |
| D. | None of these |
| Answer» D. None of these | |
| 346. |
Presence of viruses in the blood stream is known as |
| A. | Viraemia |
| B. | Bacteraemia |
| C. | Septicaemia |
| D. | Pyemia |
| Answer» B. Bacteraemia | |
| 347. |
Diagnostic test for the identification of primary syphilis: |
| A. | VDRL test |
| B. | Treponema pallidum immobilization test |
| C. | Kahn s test |
| D. | Dark ground microscopic examination |
| Answer» E. | |
| 348. |
The capacity of a given strain of microbial species to produce disease is known as |
| A. | Pathogen |
| B. | Virulence |
| C. | Infection |
| D. | None of these |
| Answer» C. Infection | |
| 349. |
The antibacterial action of penicillin is due to its effect on |
| A. | Cell membrane permeability |
| B. | Cell wall synthesis |
| C. | DNA synthesis |
| D. | Protein synthesis |
| Answer» C. DNA synthesis | |
| 350. |
A man is usually infected for tick typhus by |
| A. | Drinking milk of sick animals |
| B. | Tending cattle |
| C. | Inhaling infected dust |
| D. | All of these |
| Answer» D. All of these | |