Free NEET Biology multiple-choice questions on Microbes in Human Welfare. Attempt each question and reveal the answer with a full explanation.
For retting of Jute the fermenting microbe used is - Methophilic bacteria Helicobactor pylori Butyric acid bacteria Streptococcus lactin Conversion of milk to curd improves its nutritional value by increasing the amount of Vitamin B 12 Vitamin A Vitamin D Vitamin E Which of the following can be used as a biocontrol agent in the treatment of plant disease? (1) Lactobacillus (2) Trichoderma (3) Chlorella (4) Anabaena Which of the following is a commercial blood cholesterol lowering agent? Lipases Cyclosporin A Statin Streptokinase Among the following, the narrow spectrum antibiotic is : Chloramphenicol Penicillin G Ampicillin Amoxycillin Which of the following is put into Anaerobic sludge digester for further sewage treatment? Floating debris Effluents of primary treatment Activated sludge Primary sludge Match List-I with List-II array ll List-I & List-II (a) Aspergillus niger & (i) Acetic Acid (b) Acetobacter aceti & (ii) Lactic Acid (c) Clostridium butylicum & (iii) Citric Acid (d) Lactobacillus & (iv) Butyric Acid array Choose the correct answer from the options given below a-i, b-ii, c-iii, d-iv a-ii, b-iii, c-i, d-iv a-iv, b-ii, c-i, d-iii a-iii, b-i, c-iv, d-ii A dehydration reaction links two glucose molecules to product maltose. If the formula for glucose is C6H12O6 then what is the formula for maltose? C12H24O12 C12H22O11 C12H24O11 C12H20O10 Identify the microorganism which is responsible for the production of an immunosuppressive molecule cyclosporin A : Clostridium butylicum Aspergillus niger Streptococcus cerevisiae Trichoderma polysporum Streptokinase produced by bacterium Streptococcus is used for Removing clots from blood vessels Curd production Ethanol production Liver disease treatment Which of the following is an example of non-distilled alcoholic beverage produced by yeast? Rum Whisky Brandy Beer Probiotics are cancer inducing microbes new kind of food allergens live microbial food supplement safe antibiotics What is the reason behind production of large holes in ‘Swiss Cheese’? The production of large amount of CO2 and H2 by Trichoderma polysporum The production of large amount of CO2 and H2 by lactic acid bacteria called Lactobacillus The production of large amount of CO2 by Propionibacterium sharmanii The production of large amount of CO2 by Clostridium butylicum Match List I with List II: array llll ; & List I (Bioactive molecules) & ; & List II (Importance) A. & Streptokinase & I. & Immunosuppressive agent B. & Statins & II. & Removal of clots from the blood vessels C. & Lipases & III. & Blood cholesterol-lowering agent D & Cyclosporin A & IV & Detergent formulations array Choose the correct answer from the options given below: A–II, B–III, C–I, D–IV A–III, B–II, C–IV, D–I A–II, B–III, C–IV, D–I A–IV, B–III, C–II, D–I Curing of tea leaves is brought about by the activity of- Bacteria Mycorrhiza Viruses Fungi Which of the following is wrongly matched in the given table ? (1) Trichoderma polysporum → Cyclosporin A → immunosup-pressive drug (2) Monascus purpureus → Statins → lowering of blood cholesterol (3) Streptococcus → Streptokinase → removal of clot from blood vessel (4) Clostridium butylicum → Lipase → removal of oil stains Match the following organisms with the products they produce array ll (a) Lactobacillus & (i) Cheese (b) Saccharomyces cerevisiae & (ii) Curd (c) Aspergillus niger & (iii) Citric Acid (d) Acetobacter aceti & (iv) Bread ; & (v) Acetic Acid array Select the correct option. (1) (ii) (i) (iii) (v) (2) (ii) (iv) (v) (iii) (3) (ii) (iv) (iii) (v) (4) (iii) (iv) (v) (i) Select the correct group of biocontrol agents. (1) Nostoc, Azospirillium, Nucleopolyhedrovirus (2) Bacillus thuringiensis, Tobacco mosaic virus, Aphids (3) Trichoderma, Baculovirus, Bacillus thuringiensis (4) Oscillatoria, Rhizobium, Trichoderma Match the following columns and array ll Column-I & Column-II (a) Clostridium butylicum & (i) Cyclosporin-A (b) Trichoderma polysporum & (ii) Butyric Acid (c) Monascus purpureus & (iii) Citric Acid (d) Aspergillus niger & (iv) Blood cholesterol lowering agent array select the correct option. a-ii, b-i, c-iv, d-iii a-i, b-ii, c-iv, d-iii a-iv, b-iii, c-ii, d-i a-iii, b-iv, c-ii, d-i Match List I with List II array ll List I & List II A. Clostridium butylicum & I. Ethanol B. Saccharomyces cerevisiae & II. Streptokinase C. Trichoderma polysporum & III. Butyric acid D. Streptococcus sp. & IV. Cyclosporin-A array Choose the correct answer from the options given below: A-III, B-I, C-II, D-IV A-II, B-IV, C-III, D-I A-III, B-I, C-IV, D-II A-IV, B-I, C-III, D-II Which of the following microbes is NOT involved in the preparation of household products? A. Aspergillus niger B. Lactobacillus C. Trichoderma polysporum D. Saccharomyces cerevisiae E. Propionibacterium sharmanii Choose the correct answer from the options given below: C and E only A and B only A and C only C and D only Which of the following is used as a clot buster? Streptokinase Penicillin Cyclosporin A Statins Which one of the following pairs is wrongly matched ? yeast - ethanol streptomycetes - antibiotic coliforms - vinegar methanogens - gobar gas. Which of the following is not used as a biopesticide ? Xanthomonas Campestris Bacillus thringiensis Trichoderma harzianum Nuclear Polyhedral Virus (NPV) Which one of the following pairs is wrongly matched ? Textile – amylase Detergents – lipase Alcohol – nitrogenase Fruit juice – pectinase A good producer of citric acid is Aspergillus Pseudomonas Clostridium Saccharomyces During sewage treatment, biogases are produced which include (1) Methane, hydrogensulphide, carbon dioxide (2) Methane, oxygen, hydrogensulphide (3) Hydrogensulphide, methane, sulphur dioxide (4) Hydrogensulphide, nitrogen, methane What gases are produced in anaerobic sludge digesters :- Methane and CO2 only Methane, Hydrogen Sulphide and CO2 Methane, Hydrogen Sulphide and O2 Hydrogen Sulphide and CO2 The two functional groups characteristic of sugars are Carbonyl and phosphate Carbonyl and methyl Hydroxyl and methyl Carbonyl and hydroxyl