Host-pathogen interactions are an ongoing arms race; pathogens evolve to express unique structures that avoid host detection, and the host germline-encoded recognition system co-evolves to match these new challenges. However, because pathogens generally have much shorter life cycles than their vertebrate hosts, and some utilize error-prone DNA polymerases to replicate their genomes, pathogens can evolve rapidly to evade host encoded recognition systems. Which error prone DNA polymerase is used  by human?

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#Question id: 7546

#General Aptitude

Two families travelling from Meerut to Nagpur (which is 390 km distance) in two cars, started at the same time travelling through the same road, without any traffic block or any abjections. The ratio of the speed of the car-1 and car-2 is 6:7. After how long travelling car-1 has to exchange the speed with car-2 so that they could each the destination at the same time?

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#Question id: 19043

#Unit 13. Methods in Biology

Ion exchange chromatography is based on? 

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#Question id: 2830

#Unit 2. Cellular Organization

The NtrC protein from E. coli

a. is a σ54 RNA polymerase.             

b. stimulates transcription of the glnA gene.

c. is activated by a protein kinase called NtrB.

d. binds both to an enhancer site upstream of the glnA gene and to RNA polymerase.

e. has ATPase activity.

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#Question id: 76

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following illustrations is not a structural isomer of an organic compound with the molecular formula C6H14? For clarity, only the carbon skeletons are shown; hydrogen atoms that would be attached to the carbons have been omitted.

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#Question id: 3694

#Unit 3. Fundamental Processes

 In eukaryotes, DNA polymerase alpha is a multi-subunit enzyme with different functions. They include: