Life Sciences
GATE XL topic:biological-sciences PYQs
Build your understanding with focused practice from past exam papers.
Questions 441–450 of 1235. Imported answers require independent review unless marked reviewed.
Question 75
Open questionXL-SMCQ2 marksNeeds review
Which one of the following is NOT correct about antibiotic resistance mechanism in microbes?
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A suspension of photosynthetic green algae was illuminated in the presence of
for few seconds. The first metabolite in the Calvin cycle to be radiolabeled will beYour answerChoose one option.
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Determine the correctness or otherwise of the following Assertion [a] and the Reason [r].
Assertion [a]: Endospore can survive heat that would rapidly kill vegetative cells of the same species.
Reason [r]: In endospore, the protoplasm is reduced to minimum volume as a result of the accumulation of calcium-dipicolinic acid complexes and small acid-soluble spore proteins, which forms a cytoplasmic gel and a thick cortex.
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Which one of the following conjugations will result in formation of meroploids?
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Which of the following genus is/are a spirochete(s)?
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Which of the following is/are non-membrane bound inclusion bodies?
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Which of the following antibiotics is/are isolated from Streptomyces spp.?
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Which of the following statements about the primary and secondary adaptive immune responses to an antigen is/are correct?
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The spontaneous and induced mutations in bacteria can be distinguished by
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Open questionXL-SNAT2 marksNeeds review
During the exponential growth, it took 6 hours for the population of bacterial cells to increase from 2.5 × 10⁶ to 5 × 10⁸. The generation time of the bacterium, rounded off to the nearest integer, is ______ minutes.
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