A fluidized-bed, immobilized-cell bioreactor is used for the conversion of glucose to ethanol by Z. mobilis cells immobilized in k-carrageenan gel beads. The dimensions of the bed are 10 cm (diameter) by 200 cm. Since the reactor is fed from the bottom of the column and because of CO₂ gas evolution, substrate and cell concentrations decrease with the height of the column. The average cell concentration at the bottom of the column is X₀ = 45 g/l, and the average cell concentration decreases with the column height according to the following equation:

                             

where Z is the column height (cm). The specific rate of substrate consumption is q_S = 2 g S/g cells. h. The feed flow rate and glucose concentration in the feed are 5 l/h and 160 g glucose/l, respectively.

Determine the substrate (glucose) concentration in the effluent

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#Question id: 4418

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Histones in repressed regions near telomeres and at the silent mating loci are hypoacetylated, confirmed by using

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#Question id: 10769

#Section 3: Genetics, Cellular and Molecular Biology

In merabilis jalapa plant red plant RR Cross with white plant rr. In F1 generation the phenotype obtained was Rr Pink. Which type of cross it is

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#Question id: 1893

#Section 2: General Biology

The injection of tuberculin into the skin of a sensitized individual elicits:

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#Question id: 4741

#Section 3: Genetics, Cellular and Molecular Biology

The F2 progeny from a particular cross exhibit a modified dihybrid ratio of 9 : 7 (instead of 9 : 3 : 3 : 1). What phenotypic ratio would be expected from a testcross of the F1?

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#Question id: 14560

#Section 2: General Biology

In the growth curve of a bacteria population, the bacteria are rapidly increasing in number in the