Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 789
TLS Online TPP Program

#Question id: 807

Which of the following forces can stabilize a normal DNA double-helix?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. Base-stacking is a non-covalent interaction that occurs between the relatively hydrophobic bases in the interior of the helix.

  2. Base-pairing is a non-covalent interaction that occurs between adjacent bases in the same strand of the DNA molecule.

  3. The hydrophilic sugar-phosphate groups are on the exterior of the helix where they can interact with each other.

  4. The deoxyribose rings form N-glycosidic bonds with the phosphate groups that link neighboring nucleotides.

More Questions
TLS Online TPP Program

#Question id: 16775

#Unit 13. Methods in Biology

If the mean and the mode are given as 35 and 30. Find the Median.
TLS Online TPP Program

#Question id: 26836

#Unit 10. Ecological Principles

species diversity are positive related with
TLS Online TPP Program

#Question id: 19451

#Unit 13. Methods in Biology

We use different lenses in combinations. The total magnification is represented as
TLS Online TPP Program

#Question id: 32583

#Unit 2. Cellular Organization

Which of the following C-terminal kinesin generally travel in the opposite direction from the majority of kinesins?? 
TLS Online TPP Program

#Question id: 3598

#Unit 8. Inheritance Biology

Mendel crossed, round tall pea plants RRTT with wrinkle dwarf rrtt. The F1 plants were all round tall. These F1 plants were selfing, following genotype are selected from F2 generation

A- RrTT       B- RrTt        C- RRtt 

Which of the following decreasing frequency of this genotype?