NEET Biology Microbes in Human Welfare Question Bank

done Self Evaluation Test - Microbes in Human Welfare Total Questions - 58

• question_answer1)
  Vitamin\[{{B}_{2}}\] is obtained from:
  A)
  Penicillium                                 done clear
  B)
  Acetobacter done clear
  C)
  Aspergillus       done clear
  D)
                     Ashbya gossypii done clear
  View Solution play_arrow

• question_answer2)
  Methanogenic bacteria present in:
  A)
  Anaerobic sludge done clear
  B)
  Rumen (a part of stomach) of cattle done clear
  C)
  Both [a] and [b] done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer3)
  Lichen that yields antibiotic is:
  A)
  Ampicillin       done clear
  B)
                     Oxacillin done clear
  C)
  Both [a] and [b] done clear
  D)
  Tetracycline done clear
  View Solution play_arrow

• question_answer4)
  Acetic acid is produced with the help of:
  A)
  Albugo species done clear
  B)
  Acetobacter species done clear
  C)
  Aspergillus species done clear
  D)
  Lactobacillus species done clear
  View Solution play_arrow

• question_answer5)
  Antibiotics are mostly got from:
  A)
  Fungi                                         done clear
  B)
  Virus done clear
  C)
  Bacteria done clear
  D)
  Cyanobacteria done clear
  View Solution play_arrow

• question_answer6)
  Which antibiotic inhibits peptide bond formation?
  A)
  Streptomycin     done clear
  B)
                     Tetracyclin done clear
  C)
  Chloramphenicol                         done clear
  D)
  Neomycin done clear
  View Solution play_arrow

• question_answer7)
  Penicillin inhibits bacterial multiplication because it:
  A)
  checks RNA synthesis. done clear
  B)
  checks DNA synthesis. done clear
  C)
  destroys chromatin formation. done clear
  D)
  inhibits cell wall formation. done clear
  View Solution play_arrow

• question_answer8)
  Pasteurisation is heating at:
  A)
  \[120{}^\circ C\]for 60 minutes done clear
  B)
  \[60{}^\circ -63{}^\circ C\]for 30 minutes done clear
  C)
  \[70{}^\circ C\]for 60 minutes done clear
  D)
  \[80{}^\circ C\]for 30 minutes done clear
  View Solution play_arrow

• question_answer9)
  Which of the following is not an antibiotic?
  A)
  Griseofulvin     done clear
  B)
                     Cephalosporin done clear
  C)
  Citric acid    done clear
  D)
                     Streptomycin done clear
  View Solution play_arrow

• question_answer10)
  Probiotics are:       
  A)
  live microbial food supplement. done clear
  B)
  cancer inducing microbes. done clear
  C)
  new kind of food allergens. done clear
  D)
  safe antibiotics. done clear
  View Solution play_arrow

• question_answer11)
  Streptokinase, used as a 'clot buster' is obtained from:             
  A)
  Streptococcus    done clear
  B)
                     Staphylococcus done clear
  C)
  Lactobacillus     done clear
  D)
                     Saccharomyces done clear
  View Solution play_arrow

• question_answer12)
  Secondary sludge uses:
  A)
  gravitational sedimentation done clear
  B)
  primary clarifier done clear
  C)
  non-biodegradable materials done clear
  D)
  micro-organism to consume waste organic done clear
  View Solution play_arrow

• question_answer13)
  Indicator of water pollution is:
  A)
  E. coli         done clear
  B)
  Chlorella done clear
  C)
  Beggiatoa        done clear
  D)
                     Ulothrix done clear
  View Solution play_arrow

• question_answer14)
  Germinating barley is employed for preparation of:
  A)
  Wine                                         done clear
  B)
  Beer done clear
  C)
  Lactic acid      done clear
  D)
                     Cheese done clear
  View Solution play_arrow

• question_answer15)
  Most widely used enzyme in detergents is:
  A)
  Amylases        done clear
  B)
                     Lipases done clear
  C)
  Proteases    done clear
  D)
                     Glucoisomerases done clear
  View Solution play_arrow

• question_answer16)
  Passage of effluents into oxidation tank is for:
  A)
  Primary treatment done clear
  B)
  Secondary treatment done clear
  C)
  Tertiary treatment done clear
  D)
  Both [a] and [b] done clear
  View Solution play_arrow

• question_answer17)
  Enzymes are immobilised through:
  A)
  covalently attaching to solid support done clear
  B)
  cross-linking done clear
  C)
  entrapping in gel done clear
  D)
  All of the above done clear
  View Solution play_arrow

• question_answer18)
  Cheese and yogurt are products of:
  A)
  Pasteurisation     done clear
  B)
  Fermentation done clear
  C)
  Dehydration      done clear
  D)
                     Distillation done clear
  View Solution play_arrow

• question_answer19)
  Citric acid is obtained from:
  A)
  Aspergillus niger done clear
  B)
  Rhizobium nigricans done clear
  C)
  Penicillium citrinum done clear
  D)
  Lactobacillus bulgaricus done clear
  View Solution play_arrow

• question_answer20)
  Baculoviruses are excellent pathogens for:
  A)
  species-specific narrow spectrum pesticidal applications. done clear
  B)
  species-specific broad spectrum pesticidal applications. done clear
  C)
  species-specific narrow spectrum insecticidal applications. done clear
  D)
  species-specific broad spectrum insecticidal applications. done clear
  View Solution play_arrow

• question_answer21)
  Human insulin is being commercially produced from a transgenic species of:
  A)
  Rhizobium       done clear
  B)
                     Saccharomyces done clear
  C)
  Escherichia done clear
  D)
                     Mycobacterium done clear
  View Solution play_arrow

• question_answer22)
  The amount of oxygen required by the microbes in the decomposition of organic matter is called:
  A)
  Chemical oxygen demand done clear
  B)
  Biochemical oxygen demand done clear
  C)
  Total oxygen demand done clear
  D)
  Dissolved oxygen done clear
  View Solution play_arrow

• question_answer23)
  Enzyme immobilisation is:   
  A)
  conversion of an active enzyme into inactive form. done clear
  B)
  providing enzyme with protective covering. done clear
  C)
  changing a soluble enzyme into insoluble state. done clear
  D)
  changing pH so that enzyme is not able to carry out its function. done clear
  View Solution play_arrow

• question_answer24)
  In sewage treatment process, which part of decomposer bacteria is recycled into starting of the process is called:
  A)
  Cyclic treatment done clear
  B)
  Primary treatment done clear
  C)
  Tertiary treatment done clear
  D)
  Activated sludge treatment done clear
  View Solution play_arrow

• question_answer25)
  A lake with an inflow of domestic sewage rich in organic waste may result in:
  A)
  drying of the lake very soon due to algal bloom. done clear
  B)
  an increased production of fish due to lot of nutrients. done clear
  C)
  death of fish due to lack of oxygen. done clear
  D)
  increased population of aquatic food web organisation. done clear
  View Solution play_arrow

• question_answer26)
  Sewage purification is done by:
  A)
  Microbes     done clear
  B)
                     Fertilisers done clear
  C)
  Antibiotics       done clear
  D)
                     Antiseptics done clear
  View Solution play_arrow

• question_answer27)
  Cider is prepared by:       
  A)
  action of Lactobacillus on milk. done clear
  B)
  action of Saccharomyces on apple juice. done clear
  C)
  action of Saccharomyces on cane sugar. done clear
  D)
  action of Bacillus on ramie. done clear
  View Solution play_arrow

• question_answer28)
  Activated sludge has the ability to settle quickly this enables it to:
  A)
  be rapidly pumped back from sedimentation to aeration tank. done clear
  B)
  absorb pathogenic bacteria while sinking to the bottom of the settling-tank. done clear
  C)
  anaerobically digested and be discarded. done clear
  D)
  absorb colloidal organic matter. done clear
  View Solution play_arrow

• question_answer29)
  Jatropha is a:
  A)
  Biodiesel crop    done clear
  B)
                     Biopetro crop done clear
  C)
  Fibre crop        done clear
  D)
                     Food crop done clear
  View Solution play_arrow

• question_answer30)
  Consider the following statements about, secondary sewage treatment. Which of the statements given are correct?

  (i) In secondary treatment useful aerobic microbes grow rapidly and form floes of bacterial and fungal filaments in a mesh- like structure.

  (ii) The growing microbes consume organic matter reducing the BOD after which the effluent is passed into settling tank.

  (iii) In settling tank, the bacterial floes settle and the sediment is called activated sludge.

  (iv) A small part of the sludge is used as an inoculum. The remaining part is passed into anaerobic sludge digesters.

  (v) On anaerobic digestion of bacteria and fungi mixture of gases such as, carbon dioxide, nitrogen and carbon monoxide are produced.

  A)
  (i), (ii), (iii) and (iv) done clear
  B)
  (i), (iii), (iv) and (v) done clear
  C)
  (ii), (iii), (iv) and (v) done clear
  D)
  (i), (ii), (iii), (iv) and (v) done clear
  View Solution play_arrow

• question_answer31)
  Name the blank spaces A, B, C and D given in the following table.

  Type of Microbe	Scientific Name	Commercial Product
  Bacterium	A	Clot buster enzyme
  B	Aspergillus niger	Citric acid
  Fungi	Trichoderma polysporum	C
  Bacterium	D	Butyric acid

   
  A)
  A - Streptococcus, B - Fungus, C - Cyclosporin-A, D- Clostridium butylicum. done clear
  B)
  A-Clostridium butylicum, Q-Streptococcus, C - Fungus, D - Cyclosporin-A done clear
  C)
  A- Cyclosporin-A, B - Clostridium butylicum, C - Streptococcus, D - Fungus done clear
  D)
  A - Fungus, B - Cyclosporin-A, C - Clostridium butylicum, D - Streptococcus done clear
  View Solution play_arrow

• question_answer32)
  Following is the sewage treatment. In which of the following options, correct word for all the four numbers (1, 2, 3 and 4) are indicated.                                              
  A)
  1 - Large aeration tanks; 2 - Chemical agitation; 3 - High; 4 - Anaerobic done clear
  B)
  1 - Large aeration tanks; 2 - Mechanical agitation; 3 - Low; 4 - Anaerobic done clear
  C)
  1 - Large aeration tanks; 2 - Chemical agitation; 3 - Low; 4 - Aerobic done clear
  D)
  1 - Large aeration tanks; 2 - Mechanical agitation; 3 - High; 4 - Anaerobic done clear
  View Solution play_arrow

• question_answer33)
  Pyrethnn is a common ingredient of:
  A)
  Mosquito coils                            done clear
  B)
  Fly sprays done clear
  C)
  Mosquito mats                            done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer34)
  Thurioside is an:    
  A)
  Insecticide   done clear
  B)
  Fungicide done clear
  C)
  Antibiotic                                   done clear
  D)
  Weedicide done clear
  View Solution play_arrow

• question_answer35)
  The free-living fungus Trichoderma can be used for:
  A)
  killing insects done clear
  B)
  biological control of plant diseases done clear
  C)
  controlling butterfly caterpillars done clear
  D)
  producing antibiotics done clear
  View Solution play_arrow

• question_answer36)
  A genetically engineered micro-organism used successfully in bioremediation of oil spills is a species of:
  A)
  Pseudomonas                             done clear
  B)
  Trichoderma done clear
  C)
  Xanthomonas    done clear
  D)
                     Bacillus done clear
  View Solution play_arrow

• question_answer37)
  Viral pesticide used against gypsy moths is:
  A)
  NPV            done clear
  B)
  Nosema locustae done clear
  C)
  Fusarium        done clear
  D)
                     Beauveria bassiana done clear
  View Solution play_arrow

• question_answer38)
  Identify the microorganism which is commercially exploited as the source of bioinsecticides?
  A)
  Chrysanthemum cinerariifolium done clear
  B)
  Phytophthora palmivora done clear
  C)
  Bacillus thuringiensis done clear
  D)
  Both [a] and [c] done clear
  View Solution play_arrow

• question_answer39)
  Methane content of biogas is:
  A)
  24.6%                                       done clear
  B)
  55.8% done clear
  C)
  8%                                            done clear
  D)
  4% done clear
  View Solution play_arrow

• question_answer40)
  For biogas production besides dung, an extensive use of which weed is recommended in our country?
  A)
  Mangifera indica                         done clear
  B)
  Hydrilla done clear
  C)
  Eichhornia crassipes done clear
  D)
  Solanum done clear
  View Solution play_arrow

• question_answer41)
  IPM (Integrated Pest Management) involves:
  A)
  Tissue culture      done clear
  B)
        Biological control     done clear
  C)
  Biofertilisers          done clear
  D)
    Confusion technique done clear
  View Solution play_arrow

• question_answer42)
  Organic farming includes:
  A)
  use of fertilisers and pesticides of biological origin. done clear
  B)
  IPM   (integrated pest   management programme). done clear
  C)
  locally developed pest resistant varieties. done clear
  D)
  All of the above done clear
  View Solution play_arrow

• question_answer43)
  Which of the following is the pair ofbiofertilisers?
  A)
  Azolla and blue green algae done clear
  B)
  Nostoc and legume      done clear
  C)
  Rhizobium and grasses done clear
  D)
  Salmonella & E. coli done clear
  View Solution play_arrow

• question_answer44)
  Which of the following plants are used as green manure in crop fields and in sandy soils?
  A)
  Dichanthlum annulatum and Azolla pinnata done clear
  B)
  Crotalaria juncea and Alhagi maurorum done clear
  C)
  Calotropis procera and Phyllanthus niruri done clear
  D)
  Saccharum munja and Lantana camara done clear
  View Solution play_arrow

• question_answer45)
  Consider the following four statements (i)-(iv) and select the .option which includes all the correct ones only.

  (i) Single cell Spirulina can produce large quantities of food rich in protein, minerals, vitamins etc.

  (ii) Body weight wise, the micro-organism Methylophilus methylotrophus may be able to produce several times more proteins than the cows per day.

  (iii) Common button mushrooms are a very rich source of vitamin C.

  (iv) A rice variety has been developed which is very rich in calcium.

  A)
  (iii) and (iv)                                done clear
  B)
  (i), (iii) and (iv) done clear
  C)
  (ii), (iii) and (iv) done clear
  D)
                     (i) and (ii) done clear
  View Solution play_arrow

• question_answer46)
  Match the column-I with column-II and choose the right option.

  	Column-I		Column-II
  A.	Statins	I.	Yeast
  B.	Ethanol	II.	Blood-cholesterol lowering agent
  C.	Dung	III.	Insect-resistant plant
  D.	Bt-cotton	IV.	Biogas

  A)
  A-II;    B-I;     C-IV;   D-III done clear
  B)
  A-III;   B-IV;   C-I;     D-II done clear
  C)
  A-I;      B-II;    C-III;   D-IV done clear
  D)
  A-IV;    B-II;   C-I;     D-III done clear
  View Solution play_arrow

• question_answer47)
  Which of the following statements is incorrect for stirred tank fermentaion?
  A)
  Buffer needed to control pH. done clear
  B)
  Batch and feed possible. done clear
  C)
  Control dissolved oxygen. done clear
  D)
  Easy in process sampling. done clear
  View Solution play_arrow

• question_answer48)
  Sewage or municipal sewer pipes should not be directly left into rivers, streams and other water bodies because:

  (i) It contains human excreta and other organic waste.

  (ii) It contains a number of pathogenic microbes.

  Which of the statement given above is/are correct?

  A)
  Only (i)                                      done clear
  B)
  Only (ii) done clear
  C)
  Both [a] and [b] done clear
  D)
                     None of the above done clear
  View Solution play_arrow

• question_answer49)
  Which of the following statements regarding Baculoviruses as bio-control agents is/are correct?

  (i) Baculoviruses are pathogens that attack insects and other arthropods.

  (ii) Most of these biocontrol agents belong to the genus Nucleopolyhedrovirus.

  (iii) They do not harm plants mammals, birds, fish and other non-target insects.

  (iv) Baculoviruses are helpful in Integrated Pest Management (IPM) programme, in which beneficial insects are conserved.

  Choose the correct option.

  A)
  (i), (ii) and (iii)                            done clear
  B)
  (i), (ii) and (iv) done clear
  C)
  (ii), (iii) and (iv) done clear
  D)
                     All of these done clear
  View Solution play_arrow

• question_answer50)
  Which of the following is common to Azospirillum, Azotobacter, Anabaena, Nostoc and Oscillatoria?
  A)
  Prokaryotes      done clear
  B)
                     \[{{N}_{2}}\]-fixers done clear
  C)
  Both [a] and [b]                          done clear
  D)
  Eukaryotes done clear
  View Solution play_arrow

• question_answer51)
  Bacillus thuringiensis (Bt) strains have been used as:
  A)
  Biofertilisers done clear
  B)
  Biometallurgical techniques done clear
  C)
  Biomineralisation processes done clear
  D)
  Bioinsecticidal plants done clear
  View Solution play_arrow

• question_answer52)
  Azolla enriches rice fields with nitrogen due to its association with:
  A)
  Anabaena   done clear
  B)
                     Nostoc done clear
  C)
  Rhizobium       done clear
  D)
                     Frankia done clear
  View Solution play_arrow

• question_answer53)
  Meliantiol and salanin bioinsecticides have been extracted from:        
  A)
  Chrysanthemum cinerariifolium done clear
  B)
  Derris elliptica done clear
  C)
  Azadirichta indica done clear
  D)
  Eichhornia done clear
  View Solution play_arrow

• question_answer54)
  The bioacrive molecule Cyclosporine A is used in:
  A)
  Whooping cough done clear
  B)
  Diphtheria done clear
  C)
  Leprosy done clear
  D)
  Organ-transplant patients done clear
  View Solution play_arrow

• question_answer55)
  The bacterium that commonly lives in animal and human intestines is:
  A)
  Bacillus anthracis done clear
  B)
                     Vibrio cholera done clear
  C)
  Escherichia coli                           done clear
  D)
  Corynebacterium done clear
  View Solution play_arrow

• question_answer56)
  Cochineal insects have proved very useful for:
  A)
  Weeds control     done clear
  B)
      Parthenium control done clear
  C)
  Cactus prevention done clear
  D)
  Eichhornia prevention done clear
  View Solution play_arrow

• question_answer57)
  Consider the following statements about organic farming. Which of the given statements are correct?

  (i) It utilises genetically modified crops like Bt cotton.

  (ii) It uses only naturally produced inputs like compost.

  (iii) It does not use pesticides and urea.

  (iv) It produces vegetables rich in vitamins and minerals.

  A)
  (ii), (iii) and (iv)  done clear
  B)
                     (iii) and (iv) only done clear
  C)
  (ii) and (iii) only done clear
  D)
                     (i) and (ii) only done clear
  View Solution play_arrow

• question_answer58)
  Most of eubacterial antibiotics are obtained from
  A)
  Rhizobium       done clear
  B)
                     Bacillus done clear
  C)
  Streptomyces     done clear
  D)
                     Cephalosporium done clear
  View Solution play_arrow