TLS Online TPP Program

#Question id: 1550


IL-4 responsible for class switch recombination (CSR) into,

#Section 2: General Biology
  1. IgA, IgG2b

  2. IgG1, IgE

  3. IgA

  4. IgG3, IgG2a

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TLS Online TPP Program

#Question id: 15264

#Section 6: Plant, Animal and Microbial Biotechnology

What chemical can be used to deplete the oxygen present in the culture medium

TLS Online TPP Program

#Question id: 14166

#Section 4: Fundamentals of Biological Engineering

Stoichiometric equations are used to represent growth of microorganisms provided a ' molecular formula' for the cells is available. The molecular formula for biomass is obtained by measuring the amounts of C, N, H, O and other elements in cells. For a particular bacterial strain, the molecular formula was determined to be C4.4H7.30 1.2N0.86 . These bacteria are grown under aerobic conditions with hexadecane (C16H34) as substrate. The reaction equation describing growth is:

                             

You have been put in charge of a small fermenter for growing the bacteria and aim to produce 2.5 kg of cells for inoculation of a pilot-scale reactor. What minimum amount of hexadecane substrate must be contained in your culture medium? 

TLS Online TPP Program

#Question id: 3324

#Section 3: Genetics, Cellular and Molecular Biology

If only 20 males and 20 female grizzlies exist today, but only 10 of the males and 6 female breed, what are effective population size?

TLS Online TPP Program

#Question id: 1638

#Section 2: General Biology

Intracellular parasites within macrophages are killed more readily in the presence of:

TLS Online TPP Program

#Question id: 2069

#Section 2: General Biology

Which of the following processes includes all of the others?