TLS Online TPP Program

#Question id: 562


Phenyl-methane-sulfonyl-fluoride (PMSF) inactivates serine proteases by binding covalently to the catalytic serine residue at the active site; this enzyme-inhibitor bond is not cleaved by the enzyme.  This is an example of what kind of inhibition?

#Section 2: General Biology
  1. irreversible

  2. competitive

  3. non-competitive

  4. mixed

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TLS Online TPP Program

#Question id: 651

#Section 2: General Biology

Consider an enzyme catalysed reaction treated with inhibitor. Enzyme kinetic was analysed with Eadie Hofstee equation. A plot of V0 versus V0/[S] for an enzyme-catalyzed reaction is shown below. The control curve was obtained in the absence of inhibitor. Which effect is shown on the enzyme activity when an inhibitor is added to the reaction mixture?

TLS Online TPP Program

#Question id: 3701

#Section 3: Genetics, Cellular and Molecular Biology

Frederick Griffith accidentally discovered transformation when attempting to develop a vaccine for pneumonia. He injected mice with samples from S-strain (virulent) and/or R-strain (nonvirulent) pneumococci bacteria (Streptococcus pneumoniae). Which of the following results is NOT consistent with Griffith's experiments?

TLS Online TPP Program

#Question id: 14616

#Section 5: Bioprocess Engineering and Process Biotechnology

for Band broadening in liquid liquid chromatography, van deemter equation given following, term A called   h= A+ B/u + Cu 

TLS Online TPP Program

#Question id: 3735

#Section 3: Genetics, Cellular and Molecular Biology

The best enzyme to use in the Sanger method for DNA sequence determination is

TLS Online TPP Program

#Question id: 20850

#Section 4: Fundamentals of Biological Engineering

Match the group 1 with appropriate description of group 2.
Group 1                                                  group 2
(P) Copper                                        (1) cell wall of plant cells
(Q) Cobalt                                         (2) nitrate reductase
(R) Molybdenum                              (3) respiratory-chain components
(S) Calcium                                        (4) vitamin B12