McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Bachelor of Agriculture (BSc agri) .
Chapters
| 451. |
Nagler’s reaction detects |
| A. | Coagulase |
| B. | Hyaluronidase |
| C. | Lecithinase |
| D. | None of these |
| Answer» C. Lecithinase | |
| 452. |
Incubation period of Cl. welchii is |
| A. | 8-12 hour |
| B. | 7-10 hours |
| C. | 5-7 hours |
| D. | 2-4 hours |
| Answer» A. 8-12 hour | |
| 453. |
The average incubation period of tetanus is |
| A. | 2-3 day |
| B. | 7-10 days |
| C. | 14-21 days |
| D. | 3-4 weeks |
| Answer» B. 7-10 days | |
| 454. |
Salt agar is used for |
| A. | Streptococcu |
| B. | Staphylococcus |
| C. | Vibrio |
| D. | Shigella |
| Answer» B. Staphylococcus | |
| 455. |
Culture medium of Leishmania is |
| A. | Sabousand’s medium |
| B. | NNN medium |
| C. | Wilson Blair medium |
| D. | Czapek – dox medium |
| Answer» B. NNN medium | |
| 456. |
A simple asexual spore which develops by budding is known as |
| A. | Chlamydospore |
| B. | Blastospore |
| C. | Arthospore |
| D. | Conidia |
| Answer» B. Blastospore | |
| 457. |
Culture medium used for fungus is |
| A. | Sabouraud’s medium |
| B. | Nutrient agar |
| C. | Nutrient broth |
| D. | Minimal agar medium |
| Answer» A. Sabouraud’s medium | |
| 458. |
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» D. All of these | |
| 459. |
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» D. All of these | |
| 460. |
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» C. Moller’s staining | |
| 461. |
Wilson and Blair bismuth sulphite medium is used for the growth |
| A. | Salmonella typhi |
| B. | Shigella dysenteriae |
| C. | Vibrio cholerae |
| D. | E. coli |
| Answer» A. Salmonella typhi | |
| 462. |
Which Rickettsia can be grown on blood agar media? |
| A. | Lactobacilli |
| B. | Streptobacillus |
| C. | Bacillus anthrax |
| D. | Vibrio cholerae |
| Answer» A. Lactobacilli | |
| 463. |
Which virus was first observed? |
| A. | Hepatitis Virus |
| B. | TMV |
| C. | Cauliflower mossaic virus |
| D. | None of these |
| Answer» B. TMV | |
| 464. |
The most important energy-yielding reaction for an aerobic organism is |
| A. | Glycosi |
| B. | EMP |
| C. | KDPG |
| D. | Both b and c |
| Answer» D. Both b and c | |
| 465. |
A disease that can be transmitted by an infectious agent from one individual to another was called |
| A. | Epidemic |
| B. | Pandemic |
| C. | Communicable |
| D. | Comma |
| Answer» C. Communicable | |
| 466. |
Cell cycle regulated by |
| A. | Cyclin |
| B. | Cdks |
| C. | Cyclins and Cd ks |
| D. | None of these |
| Answer» C. Cyclins and Cd ks | |
| 467. |
The prote inaceous compound are converted to ammonia by |
| A. | Putrification bacteria |
| B. | Ammonifiaction bacteria |
| C. | Nitrification bacteria |
| D. | Denitrifying bacteria |
| Answer» B. Ammonifiaction bacteria | |
| 468. |
A cell becomes flaccid when placed in a |
| A. | Isotonic solution |
| B. | Hypertonic solution |
| C. | Hypotonic solution |
| D. | Normal solution |
| Answer» B. Hypertonic solution | |
| 469. |
A mutation causing a substitution of one amino acid is called |
| A. | Point mutation |
| B. | Silent mutation |
| C. | Missence mutation |
| D. | None of these |
| Answer» C. Missence mutation | |
| 470. |
The formation spindle fibres in the process of cell division is prevented by |
| A. | Corchicine |
| B. | ATP |
| C. | Hydrazine |
| D. | All of these |
| Answer» C. Hydrazine | |
| 471. |
Important class of respiratory enzymes: |
| A. | NAD |
| B. | Cytochromes |
| C. | ATPase |
| D. | Hydrolases |
| Answer» B. Cytochromes | |
| 472. |
The primary mode of transmission of poliomyelitis virus: |
| A. | Flie |
| B. | Milk |
| C. | Person to person |
| D. | Food and water |
| Answer» D. Food and water | |
| 473. |
Genetic constitution of the cell is |
| A. | Phenotype |
| B. | Genotype |
| C. | Cryptotype |
| D. | Histotype |
| Answer» B. Genotype | |
| 474. |
The primary mode of transmission of poliomyelitis is |
| A. | Oral route |
| B. | Blood |
| C. | Milk |
| D. | Person to person |
| Answer» C. Milk | |
| 475. |
Cerebral malaria is caused by |
| A. | Plasmodium vivox |
| B. | P.ovale |
| C. | P.falsiparum |
| D. | P.malaria |
| Answer» C. P.falsiparum | |
| 476. |
Ergot disease is caused by |
| A. | Puccinia |
| B. | Rhizopus |
| C. | Claveceps |
| D. | Penicillium |
| Answer» C. Claveceps | |
| 477. |
Most bacteria require vitamins as |
| A. | Growth Factors |
| B. | Sources of energy |
| C. | Sources of carbon |
| D. | Sources of electron donars |
| Answer» A. Growth Factors | |
| 478. |
Which of these is a trace element for bacteria? |
| A. | Mg+2 |
| B. | Na+ |
| C. | Ca+2 |
| D. | Mn+2 |
| Answer» B. Na+ | |
| 479. |
Virulent factor in pneumococcus is |
| A. | Cell wall |
| B. | Capsule |
| C. | Mesosomes |
| D. | Emdotoxins |
| Answer» D. Emdotoxins | |
| 480. |
The Bacter ia move in response to magnetic field is |
| A. | Spirochets |
| B. | Treponema |
| C. | Aquaspirillum Magnetotacticum |
| D. | None of these |
| Answer» C. Aquaspirillum Magnetotacticum | |
| 481. |
Nagler reaction detects |
| A. | Corynebacterium diphtheriae |
| B. | Clostridium tetani |
| C. | Clostridium perfringens |
| D. | Clostridium botulinum |
| Answer» C. Clostridium perfringens | |
| 482. |
The following organisms lack definite cell wall |
| A. | Mycoplasma |
| B. | L-forms |
| C. | Both a and b |
| D. | Bacteria |
| Answer» C. Both a and b | |
| 483. |
The following disease are caused by Mycoplasma except |
| A. | Pneumonia in human beings |
| B. | Little leaf of Brinjal |
| C. | Dwarf disease of Mulbery |
| D. | Citrus canker |
| Answer» D. Citrus canker | |
| 484. |
Mycotoxins are produced by |
| A. | Bacteria |
| B. | Fungi |
| C. | Algae |
| D. | Protozoans |
| Answer» B. Fungi | |
| 485. |
The main product of glycolysis under aerobic conditions is |
| A. | Pyruvate |
| B. | Lactate |
| C. | None of these |
| D. | Both a and b |
| Answer» A. Pyruvate | |
| 486. |
The protein moiety of an enzyme is known as |
| A. | Holo enzyme |
| B. | Apo enzyme |
| C. | Co enzyme |
| D. | Enzyme |
| Answer» B. Apo enzyme | |
| 487. |
Yeast extract is an excellent source of |
| A. | A Vitamin |
| B. | Proteins |
| C. | B Vitamin |
| D. | Carbohydrates |
| Answer» C. B Vitamin | |
| 488. |
Example of anaerobic medium |
| A. | Wilson blair medium |
| B. | Mac conkey broth |
| C. | Robertson’s cooked meat medium |
| D. | EMB agar |
| Answer» C. Robertson’s cooked meat medium | |
| 489. |
Biological Oxygen Demand (BOD) is a measure of: |
| A. | Industrial wastes poured into water bodies |
| B. | Extent to which water is polluted with organic compounds |
| C. | Amount of carbon monoxide inseparably combined with haemoglobin |
| D. | Amount of oxygen needed by green plants during night |
| Answer» A. Industrial wastes poured into water bodies | |
| 490. |
An example of competitive inhibition of an enzyme is the inhibition of |
| A. | Succinic dehydrogenase by malonic acid |
| B. | Cytochrome oxidase by cyanide |
| C. | Hexokinase by glucose-6-phosphate |
| D. | Carbonic anhydrase by carbon dioxide |
| Answer» A. Succinic dehydrogenase by malonic acid | |
| 491. |
The following organisms have been proposed as sources of single cell protein |
| A. | Bacteria |
| B. | Yeasts |
| C. | Algae |
| D. | All the three |
| Answer» D. All the three | |
| 492. |
Nitrites are oxidized to nitrates by a microorganism |
| A. | Nitrosomona |
| B. | Nitrosococcus |
| C. | Nitrobacter |
| D. | Azatobacter |
| Answer» C. Nitrobacter | |
| 493. |
The major constituents in agar are |
| A. | Fat |
| B. | Aminoacids |
| C. | Polysaccharides |
| D. | Polypeptides |
| Answer» C. Polysaccharides | |
| 494. |
Multiple antibiotic resistance is mediated by |
| A. | Episome |
| B. | Plasmid |
| C. | Colplasmid |
| D. | Both b and c |
| Answer» B. Plasmid | |
| 495. |
“Antagonism “ is seen in |
| A. | Lag phase |
| B. | Plasmids |
| C. | Log phase |
| D. | None of these |
| Answer» D. None of these | |
| 496. |
the first phase of a growth curve is |
| A. | Log phase |
| B. | Lag phase |
| C. | γ phase |
| D. | Both a and b |
| Answer» B. Lag phase | |
| 497. |
In gram positive and gram negative bacteria the electron transport contains |
| A. | Naphthquinone |
| B. | Plastoquinone |
| C. | Ubiquinone |
| D. | Both a and b |
| Answer» A. Naphthquinone | |
| 498. |
Growth in a closed system, affected by nutrient limitation and waste product accumulation is called |
| A. | Batch culturing |
| B. | Ascus |
| C. | Fruiting body |
| D. | Sporangiosphore |
| Answer» A. Batch culturing | |
| 499. |
Cells are active and synthesizing new protoplasm. This stage of growth is called |
| A. | Lag phase |
| B. | Stationary phase |
| C. | Log phase |
| D. | All of these |
| Answer» A. Lag phase | |
| 500. |
Which one of the following tissues can metabolize glucose, fatty acids and ketone bodies for ATP production? |
| A. | Liver |
| B. | Muscle |
| C. | Brain |
| D. | R.B.C |
| Answer» B. Muscle | |
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