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TLS Online TPP Program

#Question id: 12729

When the two antiparallel strands of DNA are held together partly by the weak forces between complementary bases and partly by hydrophobic interaction between adjacent , stacked base pairs termed as_____

#SCPH06 I Botany
  1. Base Pair
  2. Base Stacking
  3. Dissipating
  4. Dispersing
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TLS Online TPP Program

#Question id: 14271

#SCPH05 I Biotechnology

Penicillin is produced by P. chrysogenum in a fed-batch culture with the intermittent addition of glucose solution to the culture medium. The initial culture volume at quasi-steady state is V0 = 500 l, and glucose-containing nutrient solution is added with a flow rate of F = 50 l/h. Glucose concentration in the feed solution and initial cell concentration are S0 = 300 g/l and X0 = 20 g/l, respectively. The kinetic and yield coefficients of the organism are mm = 0.2 h-1 , KS = 0.5 g/l, and YX/S = 0.3 g dw/g glucose. Determine the concentration of cells at quasi-steady state when t = 10 h.
TLS Online TPP Program

#Question id: 13054

#SCPH28 | Zoology

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.
What would the expected effect be on a PCR reaction if the primers used were slightly shorter and more variable than the intended oligonucleotide sequences?
TLS Online TPP Program

#Question id: 14825

#I Life Science/ Life Sciences Group – I-V

Actinomycetes characteristically form long multinucleate filaments or hyphae that may branch to produce a network called a 
TLS Online TPP Program

#Question id: 2097

#SCPH01 Biochemistry

Free and unesterified fatty acids bind to one of a number of chaperone proteins in order to be transported in the aqueous environment of the cytosol. Which of the following facilitates this intracellular transport?
TLS Online TPP Program

#Question id: 19378

#SCPH01 Biochemistry

Enzyme EPSPS is involved in biosynthesis of