Continuous culture has an advantage over to a batch cultures as

#Question id: 14195

#Section 5: Bioprocess Engineering and Process 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 , K_S = 0.5 g/l, and Y_X/S = 0.3 g dw/g glucose. Determine the concentration of glucose at t = 10 h at quasi-steady state

#Question id: 1977

#Section 2: General Biology

A patient can produce antibodies against some bacterial pathogens, but he does not produce antibodies against viral infections. This is probably due to a disorder in which cells of the immune system?

#Question id: 1093

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following activities would be inhibited by a drug that specifically blocks the addition of phosphate groups to proteins?

#Question id: 1622

#Section 2: General Biology

 Polymorphonuclear neutrophils attack bacteria:

#Question id: 3251

#Section 3: Genetics, Cellular and Molecular Biology

Looking at 3 allele per locus and following Hardy Weinberg equilibrium what will be the expected heterozygosity if q1=0.5, q2=0.3, q3=0.2