TLS Online TPP Program

#Question id: 2081


The plasma membrane around a eukaryotic cell is composed of:

#Section 2: General Biology
  1. hydrophilic fatty acyl side chains.

  2. hydrophobic phospholipids.

  3. a phospholipid bilayer.

  4. lignin polymers.

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TLS Online TPP Program

#Question id: 2061

#Section 2: General Biology

Which of the following types of molecules are hydrophilic and therefore excluded from the hydrophobic portion of the phospholipid bilayer?

TLS Online TPP Program

#Question id: 14181

#Section 5: Bioprocess Engineering and Process Biotechnology

Aerobic degradation of benzoic acid by a mixed culture of microorganisms can be represented by the following reaction.


                Determine the yield coefficients YX/S. 

TLS Online TPP Program

#Question id: 14184

#Section 5: Bioprocess Engineering and Process Biotechnology

Aerobic degradation of benzoic acid by a mixed culture of microorganisms can be represented by the following reaction.


             Determine degree of reduction for bacteria.

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TLS Online TPP Program

#Question id: 1127

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following steps does not occur after acetylcholine binds to the muscarinic acetylcholine receptor in heart muscle cells?

TLS Online TPP Program

#Question id: 14257

#Section 5: Bioprocess Engineering and Process Biotechnology

The kLa of a small bubble column (2 l) has been measured as 20 h-1 at an airflow of 4 l/m in. If the rate of oxygen uptake by a culture of Catharanthus roseus is 0.2 mmol O2/g dry weight-h and if the critical oxygen concentration must be above 10% of saturation (about 8 mg/l), what is the maximum concentration of cells that can be maintained in the reactor?