Q. A purified DNA sample of leaf contains 20.0 mole of guanine. Calculate the approximate percentage of purine residues?

View solution

Q. Who described the structure of DNA double helix?

View solution

Q. Which form of DNA is described by Watson-Crick model?

View solution

Q. How many base pairs are there in every helical turn of Watson-Crick double helix model?

View solution

Q. Which one of the following statement is INCORRECT for Z-DNA?

View solution

Q. The third strand of triple helix is paired in which scheme?

View solution

Q. Name the nitrogenous base which is found in abundance in G-quadruplex?

View solution

Q. The stability and formation of G-quadruplex depends on __________

View solution

Q. Which of this factor is not responsible for thermal denaturation of DNA?

View solution

Q. Double-stranded DNA with high GC content has higher thermal stability than that of lower GC content?

View solution

Q. What is the term given to the supercoiling of circular DNA?

View solution

Q. Which of them is used to introduce negative supercoiling in DNA?

View solution

Q. Molecules which play the key role in the transfer of genetic information during protein synthesis are ___________

View solution

Q. Double helix formed by RNA is more stable than DNA.

View solution

Q. Which form of structure has been adopted by RNA?

View solution

Q. Name the RNA molecules which is used to carry genetic information copied from DNA?

View solution

Q. Which of the following RNA molecule convert information stored in the nucleic acid to protein?

View solution

Q. Name the secondary structure of tRNA?

View solution

Q. Name the RNA molecule which takes part in the formation of the ribosome?

View solution

Q. Which of the following rRNA molecules have peptidyl transferase activity in prokaryotes?

View solution