MicroRNAs are important gene regulators, but the miRNAs are also regulated in turn by other RNAs. Which, if any, of the following classes of RNA are not known to contain RNAs that regulate miRNAs?

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#Question id: 1493

#Unit 4. Cell Communication and Cell Signaling

In what way is tumor progression like biological evolution?

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#Question id: 1869

#Unit 4. Cell Communication and Cell Signaling

Which of the following HIV antigens provides a potential target for neutralizing antibody?

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#Question id: 12872

#General Aptitude

If the surface areas of two spheres are in the ratio 9 : 16,the ratio of their volumes is

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#Question id: 28214

#Unit 5. Developmental Biology

Specification of different mesodermal cell types in the frog Xenopus laevis by activin, a paracrine factor of the TGF-beta family. Which of the following observation is correct at the slightly lower concentration of activin?

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#Question id: 5768

#Unit 8. Inheritance Biology

Exposure to gamma radiation leads to severe damage to DNA.  The bacterium Deinococcus radiodurans is able to survive exposure to levels of gamma radiation that would kill any other known organism.  This organism is able to survive because