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TLS Online TPP Program

#Question id: 4338

Altering patterns of gene expression in prokaryotes would most likely serve an organism's survival by __.

#Section 3: Genetics, Cellular and Molecular Biology

  1. organizing gene expression, so that genes are expressed in a given order

  2. allowing each gene to be expressed an equal number of times

  3. allowing an organism to adjust to changes in environmental conditions

  4. allowing environmental changes to alter a prokaryote's genome

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TLS Online TPP Program

#Question id: 28108

#Section 5: Bioprocess Engineering and Process Biotechnology

Consider the following reversible reaction. In a 3.00 liter container, the following  amounts are found in equilibrium at 400 oC: 0.0420 mole N2, 0.516 mole H2 and 0.0357 mole NH3. Evaluate Keq.

N2(g) + 3H2(g) ↔ 2NH3(g)
TLS Online TPP Program

#Question id: 28109

#Section 5: Bioprocess Engineering and Process Biotechnology

If the equilibrium constant for the reaction
A + 2B ↔ C + 5/2 D
has a value of 4.0, what is the value of the equilibrium constant for the reaction
2C + 5D ↔ 2A + 4B
at the same temperature?
TLS Online TPP Program

#Question id: 28110

#Section 5: Bioprocess Engineering and Process Biotechnology

A certain reaction has a value of Keq = 0.0260 at 25 °C and ΔHrxn=32.4kJ/mol. Calculate the value of Keq at 37 °C. 
TLS Online TPP Program

#Question id: 28111

#Section 5: Bioprocess Engineering and Process Biotechnology
TLS Online TPP Program

#Question id: 28112

#Section 5: Bioprocess Engineering and Process Biotechnology

The ratio of mixing time and circulation time in bioreactor is
TLS Online TPP Program

#Question id: 28113

#Section 5: Bioprocess Engineering and Process Biotechnology

Impeller of diameter 0.25 m with stirrer speed of 1 s-1 is used in 2 m3 baffled bioreactor for the mixing purpose of the medium. The mixing time is equal to (assuming medium viscosity = 0.01 Pa s and density = 1000 kg m-1)