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Microbes in Human Welfare MCQs
Class XII Biology
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NCERT Based
•
NEET Practice
📘 Concept Based
📝 Exam Level
🤖 AI Explanations
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455 questions in this chapter
Question 251 of 455
📘 CLASS XII
The yeast *Saccharomyces cerevisiae* is used for the commercial production of the alcohol _____.
Yeast (Saccharomyces cerevisiae) is used for commercial production of ethanol.
Question 252 of 455
📘 CLASS XII
_____ are enzymes used in detergent formulations that help remove oily stains from laundry.
Lipases are used in detergent formulations and are helpful in removing oily stains from the laundry.
Question 253 of 455
📘 CLASS XII
Bottled fruit juices are clarified and made clearer using the enzymes pectinases and _____.
The bottled juices are clarified by the use of pectinases and proteases.
Question 254 of 455
📘 CLASS XII
Streptokinase, produced by the bacterium *Streptococcus*, is modified by genetic engineering and used as a _____.
Streptokinase... is used as a ‘clot buster’ for removing clots from the blood vessels.
Question 255 of 455
📘 CLASS XII
Streptokinase is used medically for patients who have undergone _____ leading to heart attack.
Streptokinase is used for patients who have undergone myocardial infarction leading to heart attack.
Question 256 of 455
📘 CLASS XII
The bioactive molecule Cyclosporin A, used as an immunosuppressive agent, is produced by the fungus _____.
Cyclosporin A... is produced by the fungus Trichoderma polysporum.
Question 257 of 455
📘 CLASS XII
_____, produced by the yeast *Monascus purpureus*, are commercialized as blood-cholesterol lowering agents.
Statins produced by the yeast Monascus purpureus have been commercialised as blood-cholesterol lowering agents.
Question 258 of 455
📘 CLASS XII
Statins act by competitively inhibiting the enzyme responsible for the synthesis of _____.
Statins act by competitively inhibiting the enzyme responsible for synthesis of cholesterol.
Question 259 of 455
📘 CLASS XII
The municipal waste-water containing human excreta, organic matter, and microbes is commonly called _____.
This municipal waste-water is also called sewage.
Question 260 of 455
📘 CLASS XII
Sewage is treated in Sewage Treatment Plants (STPs) to make it less _____.
Before disposal, sewage is treated in sewage treatment plants (STPs) to make it less polluting.
