On entering a germinal center, the primary B-blasts grow exponentially to form which cell type in the dark zone?

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#Question id: 14253

#SCPH05 I Biotechnology

Hybridoma cells immobilized on surfaces of Sephadex beads are used in a packed column for production of monoclonoal antibodies (Mab). Hybridoma concentration is approximately X = 5 g/l in the bed. The flow rate of the synthetic medium and glucose concentration are Q = 2 l/h and S0 = 40 g/l, respectively. The rate constant for Mab formation is k = 1 gX/l-d. Assume that there are no diffusion limitations and glucose is the rate limiting nutrient.  Determine the volume of the packed bed for 95% glucose conversion. Bed diameter is D0 = 0.2 m. Neglect the growth of the hybridomas and assume first order kinetics. 

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#Question id: 2645

#SCPH01 Biochemistry

When uncharged tRNA concentration is low what will you expect as the activity of tryptophan operon?

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#Question id: 754

#SCPH05 I Biotechnology

If the twisting of the DNA is in the same direction as that of the double helix, that is the helix is twisted up before closure, this form of super coiling is known as;

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#Question id: 11922

#SCPH28 | Zoology

Which of the following environmental features might influence microclimates? 

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#Question id: 15267

#SCPH01 Biochemistry

Which of the following is relatively more stable to heat