Class XII · Biology practice
Microbes in Human Welfare PYQs Check your understanding, bookmark questions and revisit your mistakes.
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12 questions in this collection · Page 2 of 2
Microbes In Human Welfare
What is the reason behind production of large holes in Swiss cheese?
A The production of large amounts of CO₂ and H₂ by Trichoderma polysporum B The production of large amounts of CO₂ and H₂ by lactic acid bacteria called Lactobacillus C The production of large amounts of CO₂ by Propionibacterium sharmanii D The production of large amounts of CO₂ by Clostridium butylicum
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Large holes in Swiss cheese are produced due to CO₂ released by Propionibacterium sharmanii during fermentation.
Microbes In Human Welfare
Match List-I with List-II:
List-I (Bioactive molecules) List-II (Importance) A. Streptokinase I. Immunosuppressive agent B. Statins II. Removal of clots from blood vessels C. Lipases III. Blood cholesterol-lowering agent D. Cyclosporin A IV. Detergent formulations
A A-II, B-III, C-I, D-IV B A-III, B-II, C-IV, D-I C A-II, B-III, C-IV, D-I D A-IV, B-III, C-II, D-I
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Streptokinase is used as a clot buster, statins lower blood cholesterol, lipases are used in detergent formulations and Cyclosporin A is an immunosuppressive agent.
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