BIOMOLECULES
Very Short & Short Qs [1 - 3 marks]
1. What happens when 𝐷 - glucose is treated with the following reagents?
(A) Bromine water (B) HNO3 [CBSE SQP 2022]
2. Account for the following:
(A) There are 5 − OH groups in glucose (B) Glucose is a reducing sugar [CBSE SQP 2022]
3. Define the following terms:
(A) Oligosaccharidesm (B) Invert sugar [CBSE 2020]
4. Name the disaccharide which on hydrolysis gives two molecules of glucose. [CBSE 2020]
5. Write the name of linkage joining two monosaccharides. [CBSE 2020]
6. Write the products of hydrolysis of lactose. [CBSE 2019]
7. Write chemical reactions to show that open structure of D-glucose contains the following:
(A) Straight chain (B) Five alcohol groups (C) Aldehyde as carbonyl group [CBSE 2019]
8. Write the product when D-glucose react with conc. HNO3. [CBSE 2018]
9. Glucose on reaction with acetic anhydride gives glucose pentaacetate. What does it suggest
about the structure of glucose? [CBSE 2017]
10. Which one of the following is a disaccharide: Starch, Maltose, Fructose, Glucose? [CBSE 2015]
11. Write the product obtained when D-glucose reacts with H2 N − OH. [CBSE 2015]
12. Which one of the following is a monosaccharide: Starch, Maltose, Fructose, Cellulose. [CBSE
2015]
13. Which of the two components of starch is water soluble? [CBSE 2014]
14. Write the product formed on reaction of D-glucose with Br2 water.[CBSE 2014]
15. Write the product formed when glucose is treated with HI.[CBSE 2014]
16. Define the following term: Polysaccharides[CBSE 2014
17. 34. Differentiate between the following:
(A) Amylose and Amylopectin
(B) Peptide linkage and glycosidic linkage
[CBSE 2019]
18. Name the species formed when an aqueous solution of amino acid is dissolved in water?
[CBSE SQP 2019]
Define the following with an example of each:
(A) Denatured Protein. (B) Essential Amino Acid. [CBSE 2018]
37. What is the difference between fibrous protein and globuar protein? [CBSE 2017, 15]
38. Give one example each for fibrous and globular protein. [CBSE 2016]
39. What is the difference between acidic amino acids and basic amino acids? [CBSE 2015]
40. What type of linkage is repsonsible for the formation of protiens?[CBSE 2014]
46. (A) DNA fingerprinting is used to determine paternity of an individual. Which property of DNA
helps in the procedure?
(B) What structural change will occur when a native protein is subjected to change in pH ?
[CBSE SQP 2023]
47. Why Vitamin C can't be stored in our body?[CBSE 2016]
48. What is the difference between a nucleotide and nucleoside?[CBSE 2016, 14]
49. What type of linkage is present in nucleic acids?[CBSE 2016]
50. Write the name of the vitamin whose deficiency causes bone deformities in children.[CBSE 2015]
51. "Vitamins are organic compounds that people need in small quantities. Most vitamins need to come
from food because the body either does not produce them or produces very little. Different vitamins
play different roles in the body, and a person requires a different amount of each vitamin to stay
healthy."
Deficiency of which vitamin causes:
(A) night blindness
(B) poor coagulation of blood. [CBSE 2014]
52. Deficiency of which vitamin causes scurvy?[CBSE 2014]
53. Why are vitamin 𝐴 and vitamin 𝐶 essential for us?[CBSE 2014]
54. Name the base that is found in nucleotide of RNA only.[CBSE 2014]
55. Differentiate between following:
(A) Amylose and Amylopectin
(B) Globular and Fibrous protein
(C) Nucleotide and Nucleoside.
[CBSE 2014]
