When RNA is hydrolysed there is no relationship among the quantities of different bases obtained . What does this fact suggest about the structure of RNA ? Single stranded structure of RNA.

A nitrogenous base which is present in the structure of RNA but not in DNA is

Write the important structural and functional differences between DNA and RNA.

Identify the correct statements from the following . I. When DNA is hydrolysed adenine and thymine are obtained in equal quantities. II. When RNA is hydrolysed adenine and uracil are obtained in equal equantities . III. Amylose is branched polymer with alpha 1 to 4 and alpha 1 to 6 glycosidic linkages. IV. Addison disease is due to the abnormal functioning of adrenal cortex .

Just as Bohr.s model of atom was developed on the basis of planck.s quantum theory, wave mechanical model of atom has been developed on the basis of quantum mechanics. The herat of quantum mechanism is Schrodinger wave equation which in turn is based on Heisenberg.s uncetainity principle and de broglie concept of dual nature of matter and radiation. Bohr model could explain the main lines of hydrogen or hydrogenic spectra but could not explain their fine structure. To explain this, it was suggested that each level consists of a number of sublevels, it was suggested that each level consists of a number of sublevels, the transitions between which gave rise to closely spaced lines. The numbers representing the main energy level are called Princiapl Quantum Number (n) while those representing sublevels are called Azimuthal Quantum numbers (l) and these determine the angular momentum of the electron. The orbital angular Number (m) which is just like a further split of a sublevel into finer sublevels. Lastly the electron may rotate or spin about its own axis given rise to Spin Quantum number (s) which determines the angular momentum of the electron. The quantum number not obtained from the solution of Schrodinger wave equation is

If one strand of DNA has the nitrogenous base sequence as ATCTG, what would be the complementary RNA strand sequence?

During transcription, RNA polymerase holo-enzyme binds to a gene promoter and assumes a saddle-like structure. What is it.s DNA binding sequence ?