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TLS Online TPP Program

#Question id: 341

 Which force can stabilize a DNA double-helix?

#Section 2: General Biology

  1. Hydrophobic bases are found in the interior of the helix where each base-pair is stabilized by the same number of hydrogen bonds.

  2. Hydrophilic sugar-phosphate groups are found on the exterior of the helix where they can interact with water.

  3. Non-covalent N-glycosidic bonds can form between nitrogenous bases in opposite strands in the helix.

  4. Covalent base-stacking interactions can occur between adjacent bases within the same strand in the helix.

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TLS Online TPP Program

#Question id: 14528

#Section 1: Engineering Mathematics

The value of 
TLS Online TPP Program

#Question id: 3773

#Section 3: Genetics, Cellular and Molecular Biology

DNA contains the template needed to copy itself, but it has no catalytic activity in cells. What catalyzes the formation of phosphodiester bonds between adjacent nucleotides in the DNA polymer being formed during DNA replication?
TLS Online TPP Program

#Question id: 15904

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

If the cell arc treated with 0.01% solution of FDA, what will be the effect on live cell?
TLS Online TPP Program

#Question id: 158

#Section 2: General Biology

At the isoelectric pH of a tetrapeptide:
TLS Online TPP Program

#Question id: 16074

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

Match the items in Group 1 with an appropriate description in Group 2 
Group 1                                                    Group 2 
P. PSI-BLAST                                    1. ungapped, aligned motif 
Q. CLUSTALW                                 2. Profiles
R. BLOCK                                         3. Heuristic method
S. FASTA                                           4. Multiple sequence alignment