The first-order reaction A → B, has k = 5.67 s^–1. If [A]₀ = 0.500 M, how long will it take [A] = 0.124 M?

TLS Online TPP Program

#Question id: 2118

#Section 2: General Biology

Which of the following statements correctly describes the normal tonicity conditions for typical plant and animal cells? The animal cell is in:

TLS Online TPP Program

#Question id: 13055

#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 will provide least specific amplification in qPCR?

TLS Online TPP Program

#Question id: 3260

#Section 3: Genetics, Cellular and Molecular Biology

Consider a diploid population at Hardy-Weinberg equilibrium. For a locus with two alleles, the frequency of the A1A1 genotype is 0.04) The frequency of A2 allele is

TLS Online TPP Program

#Question id: 27910

#Section 5: Bioprocess Engineering and Process Biotechnology

The rate of oxygen tranfer is given by equation 

TLS Online TPP Program

#Question id: 14699

#Section 1: Engineering Mathematics

If A and B are arbitrary events, then