Practice Questions

TLS Online TPP Program

#Question id: 341

Which force can stabilize a DNA double-helix?

#Section 2: General Biology

Hydrophobic bases are found in the interior of the helix where each base-pair is stabilized by the same number of hydrogen bonds.
Hydrophilic sugar-phosphate groups are found on the exterior of the helix where they can interact with water.
Non-covalent N-glycosidic bonds can form between nitrogenous bases in opposite strands in the helix.
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: 548

#Section 2: General Biology

Which one of the following statements is true of enzyme catalysts?

TLS Online TPP Program

#Question id: 2793

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

Chromosome painting involves

TLS Online TPP Program

#Question id: 3794

#Section 3: Genetics, Cellular and Molecular Biology

An input of energy is not required for which of the following steps of replication?

TLS Online TPP Program

#Question id: 8293

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

The importance of computers and of computer software to modern systematics s is most closely linked to advances in ________.

TLS Online TPP Program

#Question id: 20416

#Section 5: Bioprocess Engineering and Process Biotechnology

Which of the following would be correct concerning the concentration of biomass (X). growth limiting substrate (S) and product (P) in a chemostat when the cells have been washed out?