TLS Online TPP Program

#Question id: 148


The pKa of a certain weak acid is 4.0. Calculate the ratio of proton acceptor to proton donor at pH 7.0.

#Section 2: General Biology
  1. 1000:1

  2. 20:1

  3. 3:1

  4. 1:1

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TLS Online TPP Program

#Question id: 403

#Section 2: General Biology

For the reaction A -> B, DG'° = –60 kJ/mol.  The reaction is started with 10 mmol of A; no B is initially present.  After 24 hours, analysis reveals the presence of 2 mmol of B, 8 mmol of A. Which is the most likely explanation?

TLS Online TPP Program

#Question id: 14296

#Section 5: Bioprocess Engineering and Process Biotechnology

A two-stage chemostat system is used for production of secondary metabolite. The volume of each reactor is 0.5 m3; the flow rate of feed is 50 l h- 1. Mycelial growth occurs in the first reactor; the second reactor is used for product synthesis. The concentration of substrate in the feed is 10 gl-1. Kinetic and yield parameters for the organism are:

                                                            

Assume that product synthesis is negligible in the first reactor and growth is negligible in the second reactor. Determine cell concentrations entering the second reactor.

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TLS Online TPP Program

#Question id: 14530

#Section 1: Engineering Mathematics

If y = 7x - x^3 and x increase at rate of 4 units/sec how fast is slope of graph changing when x = 3 to

TLS Online TPP Program

#Question id: 4151

#Section 3: Genetics, Cellular and Molecular Biology

The signal sequences that direct proteins to the nucleus are:

TLS Online TPP Program

#Question id: 2009

#Section 2: General Biology

A child is diagnosed with DiGeorge syndrome (DGS). With which of the following would the child have serious immunological problems?