TLS Online TPP Program

#Question id: 15898


Which of the following is not related to embryo culture?

#Section 6: Plant, Animal and Microbial Biotechnology
  1. Developing seedlings
  2. Making virus-free plant
  3. Growth of embryos on culture medium
  4. Multiplication of rare plants
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TLS Online TPP Program

#Question id: 14636

#Section 1: Engineering Mathematics


TLS Online TPP Program

#Question id: 10768

#Section 3: Genetics, Cellular and Molecular Biology

Dihybrid test cross genotypic and phenotypic ratio is

TLS Online TPP Program

#Question id: 18149

#Section 2: General Biology

The cell wall of Gram-negative organisms
Which combination is correct?

TLS Online TPP Program

#Question id: 14319

#Section 5: Bioprocess Engineering and Process Biotechnology

Both Saccharomyces cerevisiae yeast and Zymomonas mobilis bacteria produce ethanol from glucose under anaerobic conditions without external electron acceptors. The biomass yield from glucose is 0.11 g g-1 for yeast and 0.05 g g-I for Z. mobilis. In both cases the nitrogen source is NH3. Both cell compositions are represented by the formula CH1.800.5N0.2. What is the yield of ethanol from glucose by Saccharomyces cerevisiae yeast?

TLS Online TPP Program

#Question id: 14310

#Section 5: Bioprocess Engineering and Process Biotechnology

Glucose is converted to ethanol by immobilized yeast cells entrapped in gel beads. The specific rate of ethanol production is: qP = 0.2 g ethanol/g-cell-h. The effectiveness factor for an average bead is 0.8. Each bead contains 50 g/L of cells. The voids volume in the column is 40%. Assume growth is negligible (all glucose is converted into ethanol). The feed flow rate is F = 400 l/h and glucose concentration in the feed is S0i = 150 g glucose/l. The diameter of the column is 1 m and the yield coefficient is about 0.49 g ethanol/g glucose. The column height is 4 m. What is the ethanol concentration in the exit stream?

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