McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Bachelor of Agriculture (BSc agri) .
Chapters
| 901. |
Nalidixic acid activity is due to |
| A. | The inhibition of DNA synthesis |
| B. | Inhibition of protein synthesis |
| C. | The inhibition of cell wall synthesis |
| D. | Both b and c |
| Answer» A. The inhibition of DNA synthesis | |
| 902. |
The best test for the susceptibility of a microorganism to antibiotics and other chemotherapeutic agents: |
| A. | Tube-dilution test |
| B. | Paper-disc test |
| C. | Both a and b |
| D. | None of these |
| Answer» C. Both a and b | |
| 903. |
The smallest amount of chemotherapeutic agents required to inhibit the growth of the organism in Vitro is known as |
| A. | MIC (minimum inhibitory concentration) |
| B. | Thermal death point (TDP) |
| C. | Death rate |
| D. | None of these |
| Answer» A. MIC (minimum inhibitory concentration) | |
| 904. |
Clear-zones formation around antibiotic disc is due to |
| A. | Growth of the bacterium surrounding of the disc |
| B. | Lysis of the bacterial cells surrounding the disc |
| C. | The destruction of paper disc (antibiotic) |
| D. | None of these |
| Answer» B. Lysis of the bacterial cells surrounding the disc | |
| 905. |
Bacitracin is obtained from |
| A. | subtilis b. |
| B. | anthracis |
| C. | B. cereus |
| D. | B. anthracoid |
| Answer» A. subtilis b. | |
| 906. |
Vancomycin is obtained from |
| A. | Streptococcus species |
| B. | Aspergillus niger |
| C. | Streptomyces orientalis |
| D. | Bacillus anthracis |
| Answer» C. Streptomyces orientalis | |
| 907. |
â-lactum antibiotics are |
| A. | Penicillin |
| B. | Cephalosporin |
| C. | Both a & b |
| D. | None of these |
| Answer» C. Both a & b | |
| 908. |
Virus causing mumps is also responsible for |
| A. | Measle |
| B. | Hepatitis A |
| C. | Rabies |
| D. | Variola |
| Answer» A. Measle | |
| 909. |
Epidemic pleurodynia and myocarditis of new born infants are both caused by |
| A. | Group B cox sack virus |
| B. | Reovirus |
| C. | Polyomavirus |
| D. | Cytomegalovirus |
| Answer» A. Group B cox sack virus | |
| 910. |
Human papillomavirus causes following tumors: |
| A. | Hepatic carcinoma |
| B. | Cervical cancer |
| C. | Condyloma acuminatum |
| D. | Plantar wart |
| Answer» A. Hepatic carcinoma | |
| 911. |
Viral infection is caused due to |
| A. | Acute self limited illness |
| B. | No apparent symptoms |
| C. | Chronic infection with persistent viral shedding |
| D. | All of these |
| Answer» D. All of these | |
| 912. |
Viruses which have teratogenic property are |
| A. | Herpes simplex virus |
| B. | Cytomegalovirus |
| C. | Rubella virus |
| D. | All of these |
| Answer» D. All of these | |
| 913. |
Kawasaki syndrome is |
| A. | Most prevalent in Japan and Hawaii |
| B. | Patients show rickettsia like bacteria in skin biopsies |
| C. | Strain involved may be propionibacterium |
| D. | All of these |
| Answer» D. All of these | |
| 914. |
Mode of action of quinolone antibiotics on growing bacteria was thought to be |
| A. | Inhibition of â lactamase |
| B. | Prevention of the cross linking of glycine |
| C. | Inhibition of DNA gyrase |
| D. | Inhibition of reverse transcriptase |
| Answer» C. Inhibition of DNA gyrase | |
| 915. |
The role that human play in the plague life cycle is |
| A. | Secondary reservoir |
| B. | Primary transmission vector |
| C. | Primary host |
| D. | Accidental intruder in rat flea cycle |
| Answer» D. Accidental intruder in rat flea cycle | |
| 916. |
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» D. Brucella melitensis | |
| 917. |
The parasite related to ancylostoma duodenale is |
| A. | Wuchereria bancrofti |
| B. | Necatur americanes |
| C. | Loa loa |
| D. | Trichinella spiralis |
| Answer» B. Necatur americanes | |
| 918. |
Which of the following amoeba does not live in large intestine ? |
| A. | Entamoeba coli |
| B. | Entamoeda histolytica |
| C. | Endolimax nana |
| D. | Entamoeba gingivalis |
| Answer» D. Entamoeba gingivalis | |
| 919. |
Which of the following is not related to congenital syphilis? |
| A. | Aneurysm |
| B. | Saddle nose |
| C. | Still birth |
| D. | Hutchiso’s teeth |
| Answer» A. Aneurysm | |
| 920. |
Streptococcus pyogens produce infection – |
| A. | Streptococcal sore throat |
| B. | Acute glomerulo nephritis |
| C. | Rheumatic fever |
| D. | None of these |
| Answer» A. Streptococcal sore throat | |
| 921. |
Salmonella which can cause prolong septicaemia. |
| A. | Salmonella anetum |
| B. | Salmonella cholerasuis |
| C. | Salmonella typhimurium |
| D. | Salmonella entritidis |
| Answer» B. Salmonella cholerasuis | |
| 922. |
E.coli produce which type of toxins? |
| A. | Exotoxin |
| B. | Endotoxins |
| C. | Leucocidin |
| D. | Both a and b |
| Answer» D. Both a and b | |
| 923. |
Main causative organism of gas gangrene is |
| A. | anthrax |
| B. | Clostridium tetani |
| C. | Cl.deficile |
| D. | Cl.perfringens |
| Answer» D. Cl.perfringens | |
| 924. |
Causative organism of whooping cough is |
| A. | Bordetella pertussis |
| B. | Bordetella parapertussis |
| C. | Bordetella bronchi septica |
| D. | None of these |
| Answer» A. Bordetella pertussis | |
| 925. |
Pfeiffer phenomenon is related to |
| A. | Vibrio cholerae |
| B. | B.anthrax |
| C. | Rickettsial pox |
| D. | All of these |
| Answer» A. Vibrio cholerae | |
| 926. |
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» D. Dark ground microscopic examination | |
| 927. |
Sporadic summer diarrhea may be caused by |
| A. | E.coli |
| B. | Enterobacter |
| C. | Hafnia |
| D. | Serratia |
| Answer» A. E.coli | |
| 928. |
Biological false reaction in VDRL is related to |
| A. | Lepra bacilli |
| B. | Corynebacterium diphtheria |
| C. | Cl.welchi |
| D. | None of these |
| Answer» A. Lepra bacilli | |
| 929. |
The best medium for the production of Penicillin is |
| A. | Nutrient agar |
| B. | Corn steep liquor |
| C. | Sulfite waste liquor |
| D. | Whey |
| Answer» B. Corn steep liquor | |
| 930. |
Industrially important Antibiotic producing organisms shall be isolated by |
| A. | Disk plate method |
| B. | Direct plate method |
| C. | Serial dilution method |
| D. | Crowded plate method |
| Answer» D. Crowded plate method | |
| 931. |
Industrial alchohol will be produced by using starter culture |
| A. | Top yeast |
| B. | Middle yeast |
| C. | Bottom yeast |
| D. | Feeder yeast |
| Answer» C. Bottom yeast | |
| 932. |
Pyruvate decarboxylase acetaldehyde + CO2 = This reaction is specially observed in |
| A. | Lactic acid fermentors |
| B. | Ethanol fermentors |
| C. | Algae |
| D. | Plants |
| Answer» B. Ethanol fermentors | |
| 933. |
The pyruvate, dehydrogenase → multienzyme complex does not occur in |
| A. | Aerobic bacteria |
| B. | Microphilic bacteria |
| C. | Facultative anaerobic bacteria |
| D. | Strictly anaerobic bacteria |
| Answer» B. Microphilic bacteria | |
| 934. |
A major ingradient of penicillin production media is |
| A. | Corn meal |
| B. | Corn steep liquor |
| C. | Cane steep liquor |
| D. | None of these |
| Answer» B. Corn steep liquor | |
| 935. |
the outstanding example of traditional microbial fermentation product is |
| A. | Vinegar |
| B. | Penicillin |
| C. | Citric acid |
| D. | Tetracyclin |
| Answer» A. Vinegar | |
| 936. |
Which of the following involves the formation of nitrate from ammonia |
| A. | Ammonification |
| B. | Denitrification |
| C. | Nitrification |
| D. | Nitrogen fixation |
| Answer» C. Nitrification | |
| 937. |
First genetically engineered and biotechnologically produced vaccine was against |
| A. | AID |
| B. | Small pox |
| C. | Herpes simplex |
| D. | Hepatitis B. |
| Answer» B. Small pox | |
| 938. |
one of the standard cloning vector widely used in gene cloning is |
| A. | Ti pasmid |
| B. | EMBL 3 |
| C. | pBR 322 |
| D. | EMBL 4 |
| Answer» C. pBR 322 | |
| 939. |
In alchoholic fermentation, CO2 is evolved during |
| A. | Decarboxylatin of pyruvic acid |
| B. | Formation of acetaldehyde |
| C. | Oxidation of acetaldehyde |
| D. | Both a and b |
| Answer» D. Both a and b | |
| 940. |
In the industrial production of streptomycin, the secondary metabolite or byproducts is |
| A. | Vitamin – B12 |
| B. | Vitamin – C |
| C. | Vitamin – B6 |
| D. | Ethanol |
| Answer» A. Vitamin – B12 | |
| 941. |
Tobacco and tea leaves are fermented to give flavour and taste. This type of fermentation is known as |
| A. | Alcohol fermentation |
| B. | Curing |
| C. | Degradation |
| D. | Lactic acid fermentation |
| Answer» B. Curing | |
| 942. |
Vinegar fermentation involves |
| A. | Yeasts only |
| B. | Yeasts with lactic bacteria |
| C. | Yeasts with acetic acid bacteria |
| D. | Yeasts with butric acid bacteria |
| Answer» C. Yeasts with acetic acid bacteria | |
| 943. |
Carcinoma refers to |
| A. | Malignant tumours of the connective tissue |
| B. | Malignant tumors of the skin or mucous membrane |
| C. | Malignant tumours of the colon |
| D. | Malignant tumors of the connective tissue |
| Answer» D. Malignant tumors of the connective tissue | |
| 944. |
By-product of acetone-butanol fermentation include |
| A. | Riboflavin |
| B. | Penicillin |
| C. | Isopropanol |
| D. | All of these |
| Answer» A. Riboflavin | |
| 945. |
Transgenic animals are for improvement of the quality of |
| A. | Milk |
| B. | Meat |
| C. | Eggs |
| D. | All of the above |
| Answer» D. All of the above | |
| 946. |
Thermo resistant bacteria are important in the preservation of foods by |
| A. | Freezing |
| B. | Canning |
| C. | Chemicals |
| D. | Irradiation |
| Answer» B. Canning | |
| 947. |
The fungus used in the industrial production of citric acid: |
| A. | Rhizopus Oryzac |
| B. | Fusarium moniliformae |
| C. | Rhizopus nigricans |
| D. | Aspergillus nigricans |
| Answer» D. Aspergillus nigricans | |
| 948. |
Penicilin is commercially produced by |
| A. | P.notatum |
| B. | P.chrysogenum |
| C. | P.citrinum |
| D. | P.roquefortii |
| Answer» B. P.chrysogenum | |
| 949. |
The most commonly used microorganism in alchohol fermentation is |
| A. | A spergilus niger |
| B. | Bacillus subtilis |
| C. | Sacharomyces cerevisiae |
| D. | Escherichia coli |
| Answer» A. A spergilus niger | |
| 950. |
V itam in B12 can be estimated and determined by using organism |
| A. | Lactobacillus sps |
| B. | Lactobacillus Leichmanni |
| C. | Bacillus subtilis |
| D. | E.Coli |
| Answer» B. Lactobacillus Leichmanni | |
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