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NEET UG BIOLOGY MCQ: MICROBES IN HUMAN WELFARE
1
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Understanding
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Assertion (A): Streptokinase acts as a clot-buster.
Reason (R): Streptokinase is given to patients who have undergone myocardial infarction.
Reason (R): Streptokinase is given to patients who have undergone myocardial infarction.
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Correct option: B
Both (A) and (R) are true and (R) is not correct explanation of (A)
Option B is correct because both the assertion and the reason are true, but the reason is not the correct explanation of the assertion. Streptokinase is a clot-buster and is used in myocardial infarction, but the reason doesn't fully explain the mechanism.
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Assertion: An organ transplant patient if not
provided with cyclosporin A may reject the
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Reason: Cyclosporin A inhibits activation of T-cells
and interferes with destruction of non-self cells. The bacterium that commonly lives in animal and human intestine is Consider the following statements I. Ladybirds and dragonflies are used to get rid of aphids and mosquitoes II. The bacteria Bacillus thuringiensis (Bt) are used to control caterpillar III. Trichoderma sp. free living fungi, are present in root ecosystems where they act against several plant pathogens IV. Rhizobium is a symbiotic bacterium that lives in the stem of legumes Which of the statements given above are correct? Which of the following serve as biofertilizer in paddy fields? Methanogens, growing anaerobically on cellulosic material, produce Clot buster agent streptokinase is produced by
provided with cyclosporin A may reject the
transplanted organ.
Reason: Cyclosporin A inhibits activation of T-cells
and interferes with destruction of non-self cells. The bacterium that commonly lives in animal and human intestine is Consider the following statements I. Ladybirds and dragonflies are used to get rid of aphids and mosquitoes II. The bacteria Bacillus thuringiensis (Bt) are used to control caterpillar III. Trichoderma sp. free living fungi, are present in root ecosystems where they act against several plant pathogens IV. Rhizobium is a symbiotic bacterium that lives in the stem of legumes Which of the statements given above are correct? Which of the following serve as biofertilizer in paddy fields? Methanogens, growing anaerobically on cellulosic material, produce Clot buster agent streptokinase is produced by