In analyzing the number of different bases in a DNA sample, which result would be consistent with the base-pairing rules?

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#Question id: 325

#Section 2: General Biology

A true statement about hydrophobic interactions is that they:

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#Question id: 174

#Section 2: General Biology

What is the net charge on the dipeptide Arg-Pro at pH 9.0? The table below gives the pKaʹs of the ionizable groups on the free amino acids.

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#Question id: 14554

#Section 1: Engineering Mathematics

The series 

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#Question id: 13066

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Precision will be reduced, but yield will be increased Optimisation of a PCR reaction is often a compromise between the competing demands for precision, efficiency and yield. Although the specific effects may vary, generally, increasing the annealing temperature will increase non-specific primer binding and reduce precision. Increasing the length of the elongation phase will reduce the proportion of incomplete newly-synthesised strands and therefore increase yield. In this case, the potential effect on efficiency is unclear. Increasing the elongation phase would increase the reaction time, but the time taken to ramp down to a lower annealing temperature would be reduced.

Which of the following is a codominant marker?

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#Question id: 19954

#Section 5: Bioprocess Engineering and Process 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