Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Biomolecules

Short Answer Type

121.

What are essential and non-essential amino acid? Give two examples of each type.

309 Views

Long Answer Type

122.

Define the following as related to proteins:
(i) Peptide linkage (ii) Primary structure (iii) Denaturation.

141 Views

Short Answer Type

123.

What are the common types of secondary structure of proteins?

138 Views

124.

Differentiate between globular and fibrous proteins.

528 Views

125.

How do you explain the amphoteric behaviour of amino acids?

508 Views

126.

What is the effect of denaturation on the structure of proteins?

134 Views

127.

How are vitamins classified? Name the vitamin responsible for the coagulation of blood.

196 Views

128.

Why are vitamin A and vitamin C essential to us? Give their important sources.

163 Views

129.

What are nucleic acids? Mention their two important functions.

189 Views

130.
What is the difference between a nucleoside and a nucleotide?

Nucleosides:

1. It contains only two basic components of nucleic acids, i.e., a pentose sugar and a nitrogenous base.

2. During their formation, 1-position of the pyrimi-dine or 9-position of the purine is linked to C, of the sugar (ribose or deoxyribose) by a β-linkage.

Nucleotides:

1. It contains all the three basic components of nucleic acids, i.e., a phosphoric acid group, a pentose sugar and a nitrogenous base.

2. These are formed by esterification of one of the hydroxyl groups (usually C₅—OH of the sugar part) of the nucleoside with phosphoric acid.