Practice Questions

TLS Online TPP Program

#Question id: 760

Which force can stabilize a DNA double-helix?

#Unit 1. Molecules and their Interaction Relevant to 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.

More Questions

TLS Online TPP Program

#Question id: 18732

#Unit 13. Methods in Biology

Mechanism of ligation for both T4 DNA ligase and E. coli DNA ligase makes use of Adenosine Monophosphate (AMP). Which of the steps is involved in the ligation mechanism?

TLS Online TPP Program

#Question id: 5182

#General Aptitude

Find the numbers of prime factors contained in the product of (23^11)×(7^4)×(3^5)

TLS Online TPP Program

#Question id: 489

#Unit 1. Molecules and their Interaction Relevant to Biology

An enzyme used in both glycolysis and gluconeogenesis is:

TLS Online TPP Program

#Question id: 26408

#Unit 3. Fundamental Processes

DNA Polymerase enzymes and their functions are given Match them correctly

TLS Online TPP Program

#Question id: 5239

#Unit 8. Inheritance Biology

Which of the following statements is not true for Hfr strains of E. coli ?