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TLS Online TPP Program

#Question id: 341

 Which force can stabilize a DNA double-helix?

#Unit 1. Molecules and their Interaction Relevant to 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: 21271

#Unit 12. Applied Biology

Which one of the following is a detection device or transducer?
TLS Online TPP Program

#Question id: 5808

#Unit 8. Inheritance Biology

Mitochondrial DNA polymerase does not have an error checking mechanism such as that of nuclear DNA polymerase. This would be expected to lead to a higher rate of which type of mutation in mitochondrial DNA?
TLS Online TPP Program

#Question id: 27556

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following amino acid involved in N linked Glycosylation
TLS Online TPP Program

#Question id: 4677

#Unit 3. Fundamental Processes

In bacteriophage lambda, PRM (promoter for repressor maintenance) transcribes only the
TLS Online TPP Program

#Question id: 12049

#Unit 7. System Physiology – Animal

Which of the following hormones is released by the presence of fat and protein in the small intestine and has a major effect to decrease gastric emptying?