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TLS Online TPP Program

#Question id: 760

Which force can stabilize a DNA double-helix?

#XL - Q Biochemistry

  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: 2121

#XL - T Zoology

Which of the following membrane activities requires energy from ATP hydrolysis?
TLS Online TPP Program

#Question id: 812

#XL - Q Biochemistry

Which of the following is not known to be involved in the process of assisted folding of proteins?
TLS Online TPP Program

#Question id: 8288

#XL - S Microbiology

Some beetles and flies have antler-like structures on their heads, much like male deer. The existence of antlers in beetle, fly, and deer species with strong male-male competition is an example of ________.
TLS Online TPP Program

#Question id: 571

#XL - Q Biochemistry

The steady state assumption, as applied to enzyme kinetics, implies:
TLS Online TPP Program

#Question id: 12156

#XL - S Microbiology

Which of the following correctly pairs a protist with one of its characteristics?