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?

What is meant by (i) Peptide linkage (ii) Biocatalysts?

Name two water soluble vitamins, their sources and the diseases caused due to their deficiency in diet.

What is essentially the difference between a-form of glucose and b-form of glucose? Explain.

Answer the following questions.
a-amino acids have relatively higher melting points than the corresponding halo acids. Explain.

Answer the following questions.
Give one structural difference between amylose and amylopectin.

Protein found in a biological system with a unique three-dimensional structure and biological activity is called a native protein. When a protein in its native form, is subjected to a physical change like change in temperature or a chemical change like, change in pH, denaturation of protein takes place. Explain the cause.

Explain what is meant by:

1. A peptide linkage.
2. A glycosidic linkage.

Write the main structural difference between DNA and RNA. Of the four bases, name those which are common to both DNA and RNA.

Explain what is meant by the following:

1. Peptide linkage.
2. Pyranose structure of glucose.