At which developmental stage should one be able to first distinguish a protostome embryo from a deuterostome embryo?

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#Question id: 5242

#SCPH06 I Botany

Auxotrohic bacteria plating on different medium, it is observed that colonies grow on minimal plus threonine only, no colony on minimal plus leucine and no colonies grow on minimal medium cystein only. What are the actual genotypes of auxotroph?

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#Question id: 5251

#SCPH05 I Biotechnology

What do transduction, transformation, and conjugation have in common?

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#Question id: 14255

#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.  If Yp/s is 4 mg Mab/g glu, determine the effluent Mab concentration of the system?

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#Question id: 19839

#SCPH05 I Biotechnology

If a refrigerator’s door is opened, then we get

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#Question id: 5264

#SCPH06 I Botany

Studies done by Buchner showed that ground-up yeast cells were able to convert sugar to alcohol. The components of the mixture that were responsible for this transformation were