Biomolecules

Chapter 3


Exercises


1. Describe the classification of carbohydrates.

2. Differentiate between D- and L-forms of glucose.

3. Draw the structure of a disaccharide made up of two monosaccharides glucose and fructose.

4. Draw the partial structure of starch and glycogen.

5. Write the major functions of carbohydrates.

6. Describe isomerisation in monosaccharides.

7. Differentiate between sphingolipids and glycerolipids.

8. Why are membrane lipids called amphipathic?

9. Differentiate between saturated and unsaturated fatty acids.

10. Describe the various categories of amino acids.

11. What is zwitterion and how is it developed?

12. What are non-standard and non-protein amino acids?

13. How the peptide bonds are formed?

14. Draw the structure of Lys-Glu-Lys.

15. Describe the various secondary structures of protein.

16. Differentiate between tertiary and quaternary structure of proteins.

17. Differentiate between nucleosides and nucleotides.

18. Explain the primary structure of DNA.

19. Draw the structure of A-T-C-G polynucleotide.

20. Explain Watson and Crick model of DNA.

21. Describe the various forms of DNA.

22. Describe the clover leaf model of tRNA.

23. In carbohydrates which of these functional groups are present

(a) Alcohol and carboxyl groups

(b) Aldehyde and ketone groups

(c) Hydroxyl and hydrogen groups

(d) Ether and ester groups

24. Which of the following is a non-reducing disaccharide?

(a) Maltose

(b) Lactose

(c) Sucrose

(d) Cellobiose

25. The repeating units of proteins are

(a) Glucose units

(b) Amino acids

(c) Fatty acids

(d) Nucleotides

26. Which of the following is the most common secondary structure of proteins

(a) α-helix

(b) β-pleated sheet

(c) Both (a) and (b)

(d) None of the above

27. A nucleotide contains

(a) Nitrogenous base, sugar and phosphate

(b) Sugar and phosphate

(c) Nitrogenous base and sugar

(d) None of the above

28. The two strands in DNA double helix are joined by

(a) Covalent bond

(b) Hydrogen bond

(c) Glycosidic bond

(d) Phosphodiester bond

29. Which is an example of storage lipid?

(a) Fatty acids

(b) Triacylglycerol

(c) Sphingolipids

(d) Eicosanoids

30. In glycerolipids fatty acids are joined to glycerol through

which bond?

(a) Phosphodiester bond

(b) Glycosidic bond

(c) Peptide bond

(d) Ester bond


Questions Type By : Himashree Bora.