TLS Online TPP Program

#Question id: 431


Which is not generally a molecule used to conserve energy?

#Section 4: Fundamentals of Biological Engineering
  1. ATP  

  2. NADH

  3. FAD 

  4. QH2

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TLS Online TPP Program

#Question id: 1145

#Section 3: Genetics, Cellular and Molecular Biology

Phospholipase C is activated by:

TLS Online TPP Program

#Question id: 14750

#Section 5: Bioprocess Engineering and Process Biotechnology

Diauxic pattern of biomass growth is associated with
I. multiple lag phase
II. sequential utilisation of multiple substrate
III. Simultaneous utilisation of multiple substrate
IV absence of log phase 

TLS Online TPP Program

#Question id: 1875

#Section 2: General Biology

What is the best description of an antibody that would prevent infection with HIV?

TLS Online TPP Program

#Question id: 14928

#Section 5: Bioprocess Engineering and Process Biotechnology

 Escherichia coli grows with a doubling time of 0.5 h in the exponential growth phase. What is the value of the specific growth rate? 

TLS Online TPP Program

#Question id: 14244

#Section 5: Bioprocess Engineering and Process Biotechnology

Ethanol is produced by anaerobic fermentation of glucose by Saccharomyces cerevisiae. For the particular strain of S. cerevisiae employed, the maintenance coefficient is 0.18 kg kg- 1 h- 1, Yxs is 0.11 kg kg-1, YPX is 3.9 kg kg-1 and µmax is 0.4 h-1.  It is decided to investigate the possibility of using Zymomonas mobilis bacteria instead of yeast for making ethanol. Z. mobilis is known to produce ethanol under anaerobic conditions using a different metabolic pathway to that employed by yeast. Typical values of Yxs are lower than for yeast at about 0.06 kg kg-1; on the other hand, the maintenance coefficient is higher at 2.2 kg kg -1 h -1. Ypx for Z. mobilis is 7.7 kg kg-l; µmax is 0.3 h- 1.  From stoichiometry, what is the maximum theoretical yield of ethanol from glucose