BIOMOLECULES
1. Define the following terms in relation to proteins
peptide linkage
denaturation
glycosidic linkage
2. What are disaccharides give an example.
3. What are monosaccharides.Give two examples.
4. What happens when D glucose is treated with the
following reagents. Indicate the products formed
HNO3
Bromine water
HI
5. Name the four bases present in DNA.Which one of these
is not present in our DNA Name two fat soluble vitamins
their sources and the disease caused due to their
deficiency in diet
6. Name two water soluble vitamins state their sources
and the diseases caused due to their deficiency in diet
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7. Why is sucrose not a reducing sugar
8. What are essential and non essential amino acids in
human food.Give one example Differentiate between
fibrous proteins and globular proteins
9. What is meant by denaturation of a protein
10. Mention three such facts about glucose which cannot
be explained by its open structure
11. What is meant by pyranose structure of glucose
12. What happens when glucose reacts with nitric acid
13. Name the products of hydrolysis maltose lactose
sucrose
14. What is essentially the difference between alpha
glucose and beta glucose
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15. Write a reaction which shows that all the carbon atoms
in glucose have straight chain Write the full form of
DNA and RNA
16. What is glycogen.How is it different from starch.How
was starch structure different from cellulose
17. Where is glycogen present what are the three types of
RNA molecules which perform different functions
18. What type of bonding helps in stabilizing the alcoholic
structure of proteins
19. What is the structural difference between a nucleuside
and a nucleotide
20. Deficiency of which vitamin causes night blindness
21. Name the base that is found in nucleoside
22. Deficiency of which vitamin causes rickets
23. Give one example of fibrous protein and globular protein
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24. What is meant by ‘reducing sugars’?
25. What are monosaccharides?
26. Name a water soluble vitamin which is a powerful
antioxidant. Give its one natural source
27. What are three types of RNA molecules which perform
different functions?
28. Write the name of linkage joining two amino acids.
29. Mention one important function of nucleic acids in our
body.
30. Which of the two components of starch is water
soluble?
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31. Which component of starch is a branched polymer of a-
glucose and insoluble in water?
32. What are enzymes?
33. Explain the following terms :
Invert sugar
Polypeptides
Anomers
34. What is essentially the difference between a-form of
glucose and p-form of glucose? Explain.
35. Describe what you understand by primary structure and
secondary structure of proteins.
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36. Write the main structural difference between DNA and
RNA. Of the four bases, name those which are common
to both DNA and RNA.
37. Write down the structures and names of the products
formed when D-glucose is treated with
(i) Hydroxylamine
(ii) Acetic anhydride.
38. Name the only vitamin which can be synthesized in our
body. Name one disease that is caused due to the
deficiency of this vitamin.
(b) State two functions of carbohydrates
39. Amino acids may be acidic, alkaline or neutral. How
does this happen?
40. What change occurs in the nature of egg protein on
boiling?
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41. How are hormones and vitamins different in respect of
their source and functions?
42. Name the base that is found in nucleotide of RNA only
43. Write the name of vitamin whose deficiency causes
bones deformities in children.
44. Which one of the following is a polysaccharide :
Starch, Maltose, Fructose, Glucose
45. What one difference between a-helix and beta-pleated
sheet structure of protein
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