71.

Stop codons are

• AUG, GUG

• UAA, UGA, UAG

• UAC, UGG

• AGU, AGA, UAC

A lake with nutrients is called

• trophic

• euphotic

• oligotrophic

• eutrophic

Retrovirus have genetic material

• DNA only

• RNA only

• DNA or RNA only

• either DNA or RNA

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

• 2008

• 2010

• 2012

• 2018

Study of Ecology of population is called

• Autecology

• Synecology

• Ecotype

• Demecology

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

• Saccharomyces 

• Neurospora crassa

• Lathyrus odoratus

• Claviceps

Which of the following is not a Pyrimidine?

• Thymine

• Uracil

• Guanine

• Cytosine

Bio- indicators are used for

• oxygen demand

• air pollution

• mineral present

• All of the above

Nitrifying bacteria are able to

• convert atmospheric nitrogen into soluble forms

• convert ammonia to nitrate

• ammonia to nitrogen

• nitrate to nitrogen

RNA is not found in

• chromosome

• plasmalemma

• nucleolus

• ribosome