Multiple Choice Questions

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One gene- one enzyme hypothesis of Beadle and Tatum was experimentally proved on

  • Saccharomyces 

  • Neurospora crassa

  • Lathyrus odoratus

  • Claviceps


B.

Neurospora crassa

One gene- one enzyme theory was given by Beadle and Tatum in 1958, while they were working on red mould or Neurospora crassa (Ascomycetes fungus), which is also called Drosophila of plant kingdom.


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Nitrifying bacteria are able to

  • convert atmospheric nitrogen into soluble forms

  • convert ammonia to nitrate

  • ammonia to nitrogen

  • nitrate to nitrogen


Stop codons are

  • AUG, GUG

  • UAA, UGA, UAG

  • UAC, UGG

  • AGU, AGA, UAC


Bio- indicators are used for

  • oxygen demand

  • air pollution

  • mineral present

  • All of the above


According to Kyoto protocol the major nations abide to reduce concentration of green house gases by

  • 2008

  • 2010

  • 2012

  • 2018


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Retrovirus have genetic material

  • DNA only

  • RNA only

  • DNA or RNA only

  • either DNA or RNA


A lake with nutrients is called

  • trophic

  • euphotic

  • oligotrophic

  • eutrophic


Study of Ecology of population is called

  • Autecology

  • Synecology

  • Ecotype

  • Demecology


RNA is not found in

  • chromosome

  • plasmalemma

  • nucleolus

  • ribosome


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Which of the following is not a Pyrimidine?

  • Thymine

  • Uracil

  • Guanine

  • Cytosine