Flycatcher birds that migrate from Africa to Europe feed their nestlings mostly with moth caterpillars. The data presented show the mean dates of egg laying, hatching, and fledging of flycatcher young, and the 1980 and 2000 peak mass of caterpillars.

The most likely cause for the shift in caterpillar peak mass is

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#Question id: 19954

#Part-B Specialized Branches in Biotechnology

A continuous reactor at steady state contains 0.04 g.l^-1 of biomass and 0.02 g.l^-1 of phenol. The feed contained 0.1 g.l^-1 of phenol. The biomass yield would be

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#Question id: 44

#Part-A Aptitude & General Biotechnology

The four covalent bonds in methane (CH4) are arranged around carbon to give which one of the following geometries?

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#Question id: 18959

#Part-A Aptitude & General Biotechnology

 Vectors used for construction of genomic libraries, and their capacity is given match them correctly

A- λ EMBL series                                                                                   I - 300kb - 1,400 kb

B - Cosmids                                                                                                 II - 45 kb

C – BACs and YACs (high capacity vectors)                                             III - 20kb

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#Question id: 14334

#Part-B Specialized Branches in Biotechnology

Laboratory-scale fermenters are usually mixed using small stirrers with electric motors rated between 100 and 500 W. One such motor is used to drive a 7cm turbine impeller in a small reactor containing fluid with the properties of water. The stirrer speed is 900 rpm. Estimate the power requirements for this process.

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#Question id: 18898

#Part-A Aptitude & General Biotechnology

Iodine-123, Iodine-125, Iodine-129, Iodine-131 are the radioactive compound having radioactive properties and used as for the diagnosis of