McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Bachelor of Agriculture (BSc agri) .
Chapters
| 351. |
One flagelium at one end of the organ is called – |
| A. | Monotrichate |
| B. | Amphitrichate |
| C. | Iophotrichate |
| D. | Peritrichate |
| Answer» A. Monotrichate | |
| 352. |
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 | |
| 353. |
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 | |
| 354. |
Which of the following are acid fast structures? |
| A. | Mycobacteria |
| B. | Bacterial spores |
| C. | Nocardia |
| D. | All of these |
| Answer» D. All of these | |
| 355. |
All of the following are acid fast structures except |
| A. | Clostridium |
| B. | Bacterium spores |
| C. | Exoskeleton |
| D. | None of these |
| Answer» A. Clostridium | |
| 356. |
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» C. Absorption of heat | |
| 357. |
Identify the obligate anaerobes |
| A. | Salmonella |
| B. | Vibrio cholera |
| C. | Cl. tetani |
| D. | Sarcinae |
| Answer» C. Cl. tetani | |
| 358. |
Streptococci which are destroyed at 60°C for 30 minutes |
| A. | Preptostreptococci |
| B. | Strepto viridans |
| C. | Strepto hemolyticus |
| D. | All of these |
| Answer» D. All of these | |
| 359. |
Toxins or enzymes which are not produced by streptococcus pyrogens |
| A. | Hyaluronide |
| B. | Phosphate |
| C. | Hemolysin |
| D. | Streptokinase |
| Answer» B. Phosphate | |
| 360. |
Cholera red reaction is identified by |
| A. | Sulphuric acid |
| B. | Nitric acid |
| C. | Hydrochloric acid |
| D. | Carbolic acid |
| Answer» A. Sulphuric acid | |
| 361. |
Diagnosis of carrier of salmonella typhi may be shown by |
| A. | Fecal culture |
| B. | Bile culture |
| C. | Urine culture |
| D. | All of these |
| Answer» D. All of these | |
| 362. |
Daisy head colony is associated with |
| A. | M.tuberculosi |
| B. | C.diphtheriae |
| C. | Cl. tetani |
| D. | None of these |
| Answer» B. C.diphtheriae | |
| 363. |
Neil mooseri reaction is related to |
| A. | Rickettsiae |
| B. | Chlamydiae |
| C. | Spirochaetes |
| D. | Clostridium |
| Answer» A. Rickettsiae | |
| 364. |
All of the following are DNA viruses except – |
| A. | Parvo viru |
| B. | Paramyxo virus |
| C. | Herpes virus |
| D. | Pix virus |
| Answer» B. Paramyxo virus | |
| 365. |
The dengue fever virus is – |
| A. | Arbo viru |
| B. | Echo virus |
| C. | Entero virus |
| D. | Orthomyxo virus |
| Answer» A. Arbo viru | |
| 366. |
Dengue fever is caused by – |
| A. | Bacteria |
| B. | Virus |
| C. | Fungi |
| D. | Rickettsia |
| Answer» B. Virus | |
| 367. |
Which of the following characters are related to viruses? |
| A. | No growth on inanimate culture media |
| B. | Not sensitive to antibiotics |
| C. | No energy producing enzymes |
| D. | Insensitive to interferon |
| Answer» D. Insensitive to interferon | |
| 368. |
Main causative organism of chiken pox is |
| A. | Fox viru |
| B. | Mumps virus |
| C. | Measles virus |
| D. | None of these |
| Answer» D. None of these | |
| 369. |
Rickesia are stained with |
| A. | Giesna and Castaneda stains |
| B. | Macchiavello and Gimnezstains |
| C. | Both a and b |
| D. | Malachite green |
| Answer» C. Both a and b | |
| 370. |
The medium used in membrane filter technique was |
| A. | EMB agar |
| B. | EMR-Vp medium |
| C. | Lactose broth |
| D. | Endo agar |
| Answer» B. EMR-Vp medium | |
| 371. |
Lysol is a |
| A. | Sterilent |
| B. | Disinfectant |
| C. | Antiseptic |
| D. | Antifungal agent |
| Answer» B. Disinfectant | |
| 372. |
Which of the following is a neutral stain? |
| A. | Picric acid |
| B. | Gmiemsa |
| C. | Neutral red |
| D. | Malachite green |
| Answer» C. Neutral red | |
| 373. |
Peptone water medium is an example for |
| A. | Synthetic medium |
| B. | Semisynthetic medium |
| C. | Differential medium |
| D. | None of these |
| Answer» B. Semisynthetic medium | |
| 374. |
The method in which the cells are frozen dehydrated is called |
| A. | Pasteurization |
| B. | Dessication |
| C. | Disinfection |
| D. | Lypophilization |
| Answer» D. Lypophilization | |
| 375. |
The techn ique used to avo id all microorganisms is accomplished by |
| A. | Sterlization |
| B. | Disinfection |
| C. | Surgical sterilization |
| D. | Disinfection Sterilization |
| Answer» A. Sterlization | |
| 376. |
Thermal death time is |
| A. | Time required to kill all cells at a given temperature |
| B. | Temperature that kills all cells in a given time |
| C. | Time and temperature needed to kill all cells |
| D. | All of the above |
| Answer» B. Temperature that kills all cells in a given time | |
| 377. |
A culture medium the exact composition of which is not known was called as |
| A. | Simple |
| B. | Complex |
| C. | Defined |
| D. | Natural |
| Answer» A. Simple | |
| 378. |
Elek’s gel diffusion test is used for the detection of |
| A. | Tetani toxin |
| B. | Cholera toxin |
| C. | Diophtheria toxin |
| D. | Toxoid |
| Answer» C. Diophtheria toxin | |
| 379. |
Temperature required for pasteurization is |
| A. | Above 150oC |
| B. | Below 100oC |
| C. | 110oC |
| D. | None of these |
| Answer» B. Below 100oC | |
| 380. |
Separation of a single bacterial colony is calle |
| A. | Isolation |
| B. | Separation |
| C. | Pure culturing |
| D. | All of these |
| Answer» A. Isolation | |
| 381. |
Wh ich of the fo l low ing is ion iz ing radiation? |
| A. | U.V. ray |
| B. | IR |
| C. | γ-rays |
| D. | None of these |
| Answer» C. γ-rays | |
| 382. |
Wh ich of the fo l low ing induces dimerisation of thymine? |
| A. | X-ray |
| B. | U.V. rays |
| C. | ã-rays |
| D. | None of these |
| Answer» B. U.V. rays | |
| 383. |
When food material are preserved at a temperature just above freezing temperature, the process is called. |
| A. | Freezing |
| B. | Pasteurisation |
| C. | Chilling |
| D. | Frosting |
| Answer» C. Chilling | |
| 384. |
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» A. Drying | |
| 385. |
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 | |
| 386. |
Autoclaving is carried at |
| A. | Dry heat |
| B. | Atmospheric pressure |
| C. | 120oC |
| D. | All of these |
| Answer» C. 120oC | |
| 387. |
Temperature in pasteurization is |
| A. | 62.8oC |
| B. | 35.7o |
| C. | 68.2oC |
| D. | 60.8oC |
| Answer» A. 62.8oC | |
| 388. |
The bacterial culture prepared by pure culture method is |
| A. | Inoculum |
| B. | Suspension |
| C. | Dilution |
| D. | None of these |
| Answer» A. Inoculum | |
| 389. |
Algae are rich in |
| A. | Carbohydrate |
| B. | Proteins |
| C. | Vitamins |
| D. | All of these |
| Answer» D. All of these | |
| 390. |
L-Lysine is produced from |
| A. | Corynebacterium glutamicum |
| B. | Clostridium botulinum |
| C. | Mycobacterium sps |
| D. | Pseudomonas |
| Answer» A. Corynebacterium glutamicum | |
| 391. |
The orderly increase in the quantity of all of the cellular components is known as |
| A. | Reproduction |
| B. | Growth |
| C. | Binary fission |
| D. | None of these |
| Answer» B. Growth | |
| 392. |
Theobacillus thio oxidans grow at pH |
| A. | 7.0 |
| B. | 1.0 |
| C. | 6.0 |
| D. | 9.5 |
| Answer» B. 1.0 | |
| 393. |
Slow freezing requires the conditions |
| A. | 0oC to 15oC for 15 min. |
| B. | – 6 oC to – 10oC for 10 min. |
| C. | – 15oC to 3 to 72 hrs. |
| D. | None of these |
| Answer» C. – 15oC to 3 to 72 hrs. | |
| 394. |
Discontinuous heating is called |
| A. | Pasteurization |
| B. | Sterilization |
| C. | Fermentation |
| D. | Tindalisation |
| Answer» D. Tindalisation | |
| 395. |
Isolation is |
| A. | Purification of culture |
| B. | Introduction of inoculum |
| C. | Separation of a single colony |
| D. | To grow microorganisms on surfaces |
| Answer» C. Separation of a single colony | |
| 396. |
The condition required for autoclave |
| A. | 121oC temp.and 15 lbs. pressure for 20 min. |
| B. | 120oC temp.and 20 lbs. pressure for 30 min |
| C. | 150oC temp.for 1 hr. |
| D. | 130oC temp for 2 hr. |
| Answer» C. 150oC temp.for 1 hr. | |
| 397. |
Lysozyme is effective against |
| A. | Gram negative bacteria |
| B. | Gram positive bacteria |
| C. | Protozoa |
| D. | Helminthes |
| Answer» B. Gram positive bacteria | |
| 398. |
Blood agar medium is |
| A. | Enrichment medium |
| B. | Enriched medium |
| C. | Selective medium |
| D. | Differential medium |
| Answer» B. Enriched medium | |
| 399. |
Infrared radiation is a method of sterilization by |
| A. | Dry heat |
| B. | Moist heat |
| C. | Chemical method |
| D. | Mechanical method |
| Answer» D. Mechanical method | |
| 400. |
Lyophilization means |
| A. | Sterilization |
| B. | Freeze-drying |
| C. | Burning to ashes |
| D. | Exposure to formation |
| Answer» B. Freeze-drying | |
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