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TLS Online TPP Program

#Question id: 21731

The smog constituent peroxyacetyl nitrate (PAN) dissociates into peroxyacetyl radicals and NO2(g) in a first order reaction with a half-life of 32 min. 
If the initial concentration of PAN in an air sample is 2.7×1015 molecules/L, what will be the concentration 2.24 h later?

#Section 5: Bioprocess Engineering and Process Biotechnology
  1. 1.4×1014 molecules/L
  2. 14 × 108 molecules/L
  3. 2.8×1014 molecules/L
  4. 14.1×1014 molecules/L
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TLS Online TPP Program

#Question id: 18685

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Match the items in Group 1 with an appropriate description in Group 2 
Group I                                      Group 2 
P. UPGMA                             1. Protein sequence database
Q. CLUSTALW                       2. Phylogenetic Analysis
R. SWISS-PROT                    3. 3-D structure visualization
S. RasMol                              4. Multiple sequence alignment
TLS Online TPP Program

#Question id: 18686

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Homology modeling may be distinguished from ab initio prediction because: 
TLS Online TPP Program

#Question id: 18687

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Homology modeling involves 
TLS Online TPP Program

#Question id: 18688

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Match the items in Group 1 with an appropriate description in Group 2 
Group I                                      Group 2 
P. GOR method                           1. Protein structure visualization 
Q. Genome sequencing           2. Sanger method
R. ESTs                                         3. Protein secondary structure prediction
S. RasMol                                    4. gene expressed as cDNA
TLS Online TPP Program

#Question id: 18689

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Ab initio approach makes structural predictions based on 
TLS Online TPP Program

#Question id: 18690

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

in ab initio approach, generally when a base pairing is formed, the energy of the molecule is____ because of attractive interactions between the two strands.