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TLS Online TPP Program

#Question id: 2326

The movement of chromosomes during mitosis is due to the:

#Section 3: Genetics, Cellular and Molecular Biology

  1. shortening of microtubules to which they are attached.

  2. lengthening of microtubules to which they are attached.

  3. shortening of microfilaments to which they are attached.

  4. lengthening of microfilaments to which they are attached.

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TLS Online TPP Program

#Question id: 2303

#Section 3: Genetics, Cellular and Molecular Biology

During cell division spindle fibers attach themselves to the _______ located on the chromosomes.
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: 1847

#Section 2: General Biology

Which of the following statements is TRUE of DNA vaccines?
TLS Online TPP Program

#Question id: 14227

#Section 5: Bioprocess Engineering and Process Biotechnology

A fermenter is maintained at 35⁰C by water circulating at a rate of 0.5 kg s^-1 in a cooling coil inside the vessel. The inlet and outlet temperatures of the water are 8⁰C and 15⁰C respectively. The length of the cooling coil is increased by 50%. In order to maintain the same fermentation temperature, the rate of heat removal must be kept the same. Determine the new cooling-water flow rate and outlet temperature by carrying out the following calculations. The heat capacity of the cooling water can be taken as 4.18 kJ kg^- 1 o C^- 1. Evaluate UA for the original coil. ________________
TLS Online TPP Program

#Question id: 28108

#Section 5: Bioprocess Engineering and Process Biotechnology

Consider the following reversible reaction. In a 3.00 liter container, the following  amounts are found in equilibrium at 400 oC: 0.0420 mole N2, 0.516 mole H2 and 0.0357 mole NH3. Evaluate Keq.

N2(g) + 3H2(g) ↔ 2NH3(g)