List of top Life Science Questions on Microbiology asked in GATE XL

The process of conversion of nitrogen into ammonia by bacteria is called:

Which option(s) correctly match(es) the Antibiotic with their corresponding Target?

Which of the following reactions is/are catalyzed by aldolase?
Which of the following is/are example(s) of animal-microbe mutualism?
Which of the following statements regarding micro-organisms is/are correct?

A culture of lac Escherichia coli is grown in a medium lacking lactose or any other \(\beta\)-galactoside. The response of the lac operon upon induction by lactose can be monitored by measuring the levels of lac mRNA, \(\beta\)-galactosidase enzyme and permease enzyme. Which one of the following profiles correctly captures the on-off response to lactose?}

Correctly match the viruses listed in Column I with the nature of their corresponding genetic materials listed in Column II:

Carl Woese established that short subunit rRNA sequences can be used to reveal evolutionary relationships between various organisms. Based on this, which one of the following options is the established phylogenetic arrangement of the three domains of life?

Which of the following sites is/are the location(s) of ATP generation through oxidative phosphorylation in Escherichia coli?
 

The origin of the Escherichia coli chromosome on the genetic map is shown below.
Bidirectional replication is a feature of this system and both replication forks move at the same rate. Which one of the following sequences of replication of the genes is correct?

Robert Koch used a meat-infused nutrient medium for which one of the following purposes?
India is aiming to be free of tuberculosis by 2025. One of the key approaches for this program is DOTS. Which one of the following options is the full form of DOTS?
A bacterium obtains energy from a chemical source by the oxidation of reduced \({NO}_2^{-}\), with \({CO}_2\) as the principal carbon source. Which one of the following nutritional groups does this bacterium belong to?
A suspension of photosynthetic green algae was illuminated in the presence of \(^{14}\)CO\(_2\) for few seconds. The first metabolite in the Calvin cycle to be radiolabeled will be 3-phosphoglycerate (3-PGA).

Match the test in Group I with its application in Group II 

The presence of excess glucose has been known to prevent the induction of lac operon as well as other operons controlling enzymes involved in carbohydrate metabolism in E. coli. Which of the following processes define(s) the phenomenon?
The organisms that obtain energy from inorganic compounds are known as:
Which of the following antibiotics is/are isolated from Streptomyces spp.?
Which of the following statements about the primary and secondary adaptive immune responses to an antigen is/are correct?
The spontaneous, and induced mutations in bacteria can be distinguished by
Which one of the following is NOT correct about antibiotic resistance mechanism in microbes?
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.
Which one of the following conjugations will result in formation of merodiploids?
Which of the following genus is/are a spirochete(s)?
Which of the following is/are non-membrane bound inclusion bodies?