TLS Online TPP Program

#Question id: 565


A transition-state analog:

#Section 2: General Biology
  1. is less stable when binding to an enzyme than the normal substrate.

  2. resembles the active site of general acid-base enzymes.

  3. resembles the transition-state structure of the normal enzyme-substrate complex.

  4. stabilizes the transition state for the normal enzyme-substrate complex.

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TLS Online TPP Program

#Question id: 14314

#Section 5: Bioprocess Engineering and Process Biotechnology

An industrial waste-water stream is fed to a stirred-tank reactor continuously and the cells are recycled back to the reactor from the bottom of the sedimentation tank placed after the reactor. The following are given for the system: F = 100 l/h; S0 = 5000 mg/l; mm = 0.25 h^-1 ; Ks = 200 mg/l; α (recycle ratio) = 0.6; C (cell concentration factor) = 2; Y M X/S = 0.4. The effluent concentration is desired to be 100 mg/l.  The effluent concentration is desired to be 100 mg/l. If the residence time is 2 h in the sedimentation tank, determine the volume of the sedimentation tank and cell concentration in the effluent of the sedimentation tank.

TLS Online TPP Program

#Question id: 27055

#Section 4: Fundamentals of Biological Engineering

What is the enthalpy of 150 g formic acid at 70°C and 1 atm relative to 25°C  and 1 atm? 
(Cp for formic acid is 0.524 cal g-1 °C-1)

TLS Online TPP Program

#Question id: 16000

#Section 6: Plant, Animal and Microbial Biotechnology

Range of osmolarity tolerated/accepted in mOsm/Kg of H2O by mammalian cells is

TLS Online TPP Program

#Question id: 15639

#Section 1: Engineering Mathematics

If A is Hermitian matrix, then IA is

TLS Online TPP Program

#Question id: 3045

#Section 2: General Biology

Which one of the following combinations Mac-Conkey Agar allows to growth of gram negative bacteria?

(P) Bile salts                          (Q) Sodium chloride

(R) Methylene blue                  (S) Crystal violet