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NEET UG BIOLOGY MCQ: MICROBES IN HUMAN WELFARE
1
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Remembering
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For which work, Ernest Chain and Howard Florey were awarded Nobel prize?
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Correct option: A
Establishing full potential of penicillin as an effective antibiotic
Option A is correct because Ernest Chain and Howard Florey were awarded the Nobel Prize for establishing the full potential of penicillin as an effective antibiotic.
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Assertion: An organ transplant patient if not
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. Assertion (A): Streptokinase acts as a clot-buster.
Reason (R): Streptokinase is given to patients who have undergone myocardial infarction. 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
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. Assertion (A): Streptokinase acts as a clot-buster.
Reason (R): Streptokinase is given to patients who have undergone myocardial infarction. 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