McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Bachelor of Agriculture (BSc agri) .
Chapters
| 201. |
Streptolysin O is inactivated by |
| A. | CO2 |
| B. | Nitrogen |
| C. | Oxygen |
| D. | Serum |
| Answer» C. Oxygen | |
| 202. |
Streptolysin ‘S’ is |
| A. | Oxygen unstable |
| B. | Thermostable |
| C. | Oxygen stable |
| D. | None of these |
| Answer» C. Oxygen stable | |
| 203. |
Influenza virus is identified by using |
| A. | Haemaggulutinin inhibition test |
| B. | Tissue culture method |
| C. | Embryonated eggs |
| D. | Plaque formation |
| Answer» A. Haemaggulutinin inhibition test | |
| 204. |
Growth of influenza virus is identified by |
| A. | Cytopathic effect |
| B. | Hela cells |
| C. | Both a and b |
| D. | None of these |
| Answer» B. Hela cells | |
| 205. |
Glutamic acid is oxidized by the species except |
| A. | melienasis |
| B. | abortus b. |
| C. | B. suis |
| D. | B.canis |
| Answer» D. B.canis | |
| 206. |
“Prozone phenomenon” is encountered in |
| A. | A typical mycobacteria |
| B. | Brucella |
| C. | Streptococcus |
| D. | Bordetella pertusis |
| Answer» B. Brucella | |
| 207. |
Of the following, this is a capsulated organism |
| A. | Bacillus anthraci |
| B. | Escherichia-coli |
| C. | Corynebacterium |
| D. | Brucella |
| Answer» A. Bacillus anthraci | |
| 208. |
Anthrax is a |
| A. | Vector borne |
| B. | Zoonotic infection |
| C. | Wound bone |
| D. | Soil borne |
| Answer» B. Zoonotic infection | |
| 209. |
Mc Fadyean’s reaction is used to detect |
| A. | Bacillus anthraci |
| B. | Brucella |
| C. | Corynaebacterium |
| D. | None of these |
| Answer» A. Bacillus anthraci | |
| 210. |
Gasgangarene bacillus is |
| A. | Facultative anaerobe |
| B. | Obligate anaerobe |
| C. | Facultative aerobe |
| D. | Obligate aerobe |
| Answer» B. Obligate anaerobe | |
| 211. |
Coagulase test is used for |
| A. | Salmonella |
| B. | Staphylococcus |
| C. | Bordetella |
| D. | Pneumococcus |
| Answer» B. Staphylococcus | |
| 212. |
HIV is belonging to |
| A. | Retro Viridae |
| B. | Rhabdo Viridae |
| C. | Toga Viridae |
| D. | Paramyxo Viridae |
| Answer» A. Retro Viridae | |
| 213. |
Special feature of Retro viruses |
| A. | Reverse transcriptase |
| B. | RNA directed DNA polymerases |
| C. | Both a & b |
| D. | Boils |
| Answer» C. Both a & b | |
| 214. |
AIDS virus is |
| A. | RNA viru |
| B. | DNA virus |
| C. | Retro virus |
| D. | Entero virus |
| Answer» C. Retro virus | |
| 215. |
AIDS is caused by |
| A. | HTLV – I |
| B. | Bunya virus |
| C. | HTLV – III |
| D. | All |
| Answer» D. All | |
| 216. |
Which of the following organisms is most commonly associated with AIDS pneumonia? |
| A. | Klebsiella |
| B. | Str. pneumonia |
| C. | Mycoplasma |
| D. | Mycobacterium tuberculosis |
| Answer» D. Mycobacterium tuberculosis | |
| 217. |
Sero conservation in HIV infection takes place in |
| A. | 3 week |
| B. | 6 weeks |
| C. | 9 weeks |
| D. | 12 weeks |
| Answer» C. 9 weeks | |
| 218. |
Following is the marker of HIV infection in blood: |
| A. | Reverse transcriptase |
| B. | DNA polymerase |
| C. | RNA polymerase |
| D. | None of these |
| Answer» A. Reverse transcriptase | |
| 219. |
Which of the following is the most specific in diagnosis of AIDS? |
| A. | IHA |
| B. | Western blot |
| C. | ELISA |
| D. | Immuno electrophoresis |
| Answer» B. Western blot | |
| 220. |
The interval period between HIV infection and appearance of antibodies in serum is called |
| A. | Intrinsic period |
| B. | Incubation period |
| C. | Window period |
| D. | None of these |
| Answer» C. Window period | |
| 221. |
Screening test for AIDS is |
| A. | Western blot test |
| B. | ELISA test |
| C. | Both a and b |
| D. | VDRL test |
| Answer» B. ELISA test | |
| 222. |
Confirmatory test for AIDS is |
| A. | Western blot test |
| B. | ELISA test |
| C. | Karpas test |
| D. | Fujerbio test |
| Answer» A. Western blot test | |
| 223. |
The most common infection in AIDS is |
| A. | LGV |
| B. | CMV |
| C. | Pnemocystis carnii |
| D. | Syphilis |
| Answer» C. Pnemocystis carnii | |
| 224. |
During AIDS, HIV infects |
| A. | CD3 lymphocyte |
| B. | CD4 lymphocytes |
| C. | CD2 lymphocytes |
| D. | Blymphocytes |
| Answer» B. CD4 lymphocytes | |
| 225. |
Lab diagnosis of Leishmaniasis is done by |
| A. | CFT |
| B. | Peripheral smear |
| C. | Blood culture |
| D. | All of these |
| Answer» D. All of these | |
| 226. |
Those fungi which do not have a sexual stage are classified as |
| A. | Phycomycete |
| B. | Ascomycetes |
| C. | Basidiomycetes |
| D. | Fungi imperfecti |
| Answer» D. Fungi imperfecti | |
| 227. |
Tinea capitis is |
| A. | Ring worm of the foot |
| B. | Ring worm of scalp |
| C. | Ring worm of non-hairy skin of body |
| D. | Both a and c |
| Answer» C. Ring worm of non-hairy skin of body | |
| 228. |
Diagnosis of bacterial disease can be made by |
| A. | Finding bacteria in pathological fluids |
| B. | Isolation of bacteria by culture from exudates or blood |
| C. | Both a and b |
| D. | None of these |
| Answer» C. Both a and b | |
| 229. |
Staphylococcus aureus are characterized by |
| A. | Formation of acid in sucrose, dextrose |
| B. | Liquification of gelatin due to production of gelatinase |
| C. | Strains are catalase positive |
| D. | All of above |
| Answer» C. Strains are catalase positive | |
| 230. |
Cholera occurs in _______ form |
| A. | Endemic |
| B. | Epidemic |
| C. | Sporadic |
| D. | all |
| Answer» D. all | |
| 231. |
Endemic typhus is caused by |
| A. | R.mooseri |
| B. | R.quintana |
| C. | R.prowazekii |
| D. | any of them |
| Answer» A. R.mooseri | |
| 232. |
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» C. Inhaling infected dust | |
| 233. |
In Gram positive bacteria, ratio of RNA to DNA is |
| A. | 8 : 1 |
| B. | 1 : 2 |
| C. | Almost equal |
| D. | None of these |
| Answer» A. 8 : 1 | |
| 234. |
Ziehl – Neelson stain is a ______ |
| A. | Simple stain |
| B. | Counter stain |
| C. | Differential stain |
| D. | None of them |
| Answer» C. Differential stain | |
| 235. |
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» D. All of these | |
| 236. |
Freeze-etch particles (used in preparing cell for electron microscopy) can be located in the |
| A. | Cytoplasm |
| B. | Cell wall |
| C. | Cell membrane |
| D. | Nucleus |
| Answer» C. Cell membrane | |
| 237. |
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» D. Greater resistance to drying than vegetative cell. | |
| 238. |
The main difference in true bacteria and mycoplasma is that it does not posses – |
| A. | Flagella |
| B. | Cell wall |
| C. | ATP synthesis |
| D. | A capsule |
| Answer» B. Cell wall | |
| 239. |
The organism responsible for retarding penetration of host cell by an inhibitor of ATP synthesis. |
| A. | M.pneumoniae |
| B. | Rickettsia rickettsii |
| C. | Chlamydia trachomatis |
| D. | Chlamydia psitacci |
| Answer» B. Rickettsia rickettsii | |
| 240. |
Mycoplasmas differ from Chalamy-diae in that, it |
| A. | has ability to cause urinary tract infection |
| B. | lack of atrue bacterial cell wall |
| C. | susceptible to penicillin |
| D. | All of these |
| Answer» B. lack of atrue bacterial cell wall | |
| 241. |
Fungal disease in human is caused by – |
| A. | Inhalation of conidia |
| B. | Invasion of mucous membrane |
| C. | Contamination of wounds with conidia or myceliat fragments |
| D. | All of these |
| Answer» D. All of these | |
| 242. |
A polysaccharide capsule is present on cryptococci which – |
| A. | Inhibits phagocytosis |
| B. | Is an aid to diagnose |
| C. | Cross reacts with rheumatoid factor |
| D. | All of these |
| Answer» A. Inhibits phagocytosis | |
| 243. |
The largest protozoa is – |
| A. | Balantidium coli |
| B. | Entamoeba coli |
| C. | Trichomonus vaginalis |
| D. | Toxoplasma gondii |
| Answer» A. Balantidium coli | |
| 244. |
Premunition is particularly seen in – |
| A. | Ascari |
| B. | Giardia |
| C. | Plasmodium |
| D. | None of these |
| Answer» C. Plasmodium | |
| 245. |
Which of the following vaccine contains attenuated form of bacteria? |
| A. | BCG |
| B. | TAB |
| C. | Polio |
| D. | Cholera |
| Answer» A. BCG | |
| 246. |
The bacteria, which is motile at 22oC but non-motile at 37oC is |
| A. | Tranformation |
| B. | Transduction |
| C. | Conjugation |
| D. | Cell fusion |
| Answer» D. Cell fusion | |
| 247. |
Techoic acid is – |
| A. | Found in the walls of Gram positive bacteria |
| B. | Provide receptors for phages |
| C. | Make up outer wall of Gram negative bacteria |
| D. | Influence the permeability of the membrane |
| Answer» A. Found in the walls of Gram positive bacteria | |
| 248. |
One flagelium at one end of the organ is called – |
| A. | Monotrichate |
| B. | Amphitrichate |
| C. | Iophotrichate |
| D. | Peritrichate |
| Answer» A. Monotrichate | |
| 249. |
What is the function of bacterial capsule? |
| A. | Production of organism from phagocytosis |
| B. | Helps in adherence of bacteria to surface in its environment |
| C. | Both a and b |
| D. | None of these |
| Answer» C. Both a and b | |
| 250. |
Which of the following is the charachteristic of bacterial spore? |
| A. | Highly refractile |
| B. | Usually dehydrated |
| C. | Sensitive to formaldehyde |
| D. | All of these |
| Answer» D. All of these | |
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