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.

(i) The chemical name of vitamin A is retinol.
The deficiency of vitamin A leads to xerophthalmia and night blindness. Important Sources of Vitamin ‘A’ : Milk, butter, egg, fish, and fish oil (Cod liver oil). It can also be synthesised in the body from carotenoids present in carrots, tomatoes, ripe mangoes etc. Carotenoids are the precursors of vitamin A.

(ii) The chemical name of vitamin C is ascorbic acid. The deficiency of vitamin C leads to scurvy.
Important Sources of Vitamin C: Citrus fruits (oranges, lemon, grape fruit, lime etc.), amla, cabbage, guava etc.

163 Views