Welcome to your Biomolecules MCQs Mock Test of Class 12th Chemistry
Question 1. Which compound can exist in a dipolar (zwitter ion) structure?
Question 2. Which of the following is an acidic amino acid?
Question 3. The melting points of amino acids are higher than the corresponding hal-acids because
Question 4. Most common types of secondary structures of proteins are
Question 5. Mark the incorrect example
Question 6. During acetylation of glucose it needs ,v moles of.acetic anhydride. The value of x would be
Question 7. On oxidation with a mild oxidising agent like Br2/H20, the glucose is oxidized to
Question 8. Invert sugar is
Question 9. Which of the following compounds is found abundatly in nature?
Question 10. Glycosidic linkage is an
Question 11. Starch is composed of two polysaccharides which arc
Question 12. Which reagent is used to convert glucose into saccharic acid?
Question 13. Maltose is made up of
Question 14. What is the basic formulae for starch?
Question 15. Whicn of the following is an example of an aldopentose?
Question 16. Which of the following treatment will convert starch directly into glucose?
Question 17. The general formula of carbohydrates is
Question 18. The a-and p-forms of glucose are
Question 19. The conversion of maltose into glucose is possible by the enzyme
Question 20. Which of the following is a non-reducing sugar?
Question 21. Which one of the following is not correct?
Question 22. In cellulose, D-glucose units are joined by
Question 23. The anomeric carbon in D (+) glucose is
Question 24. How many C-atoms are there is a pyranose ring?
Question 25. Cellulose is a
Question 26. Amino acids generally exist in the form of Z witter ions. This means they contain
Question 27. Globular proteins are present in
Question 28. The letter ‘D’ in carbohydrates signifies
Question 29. A diabetic person carries a packet of glucose with him always, because
Question 30. Among the naturally occurring carbohydrates, furanose ring is found in the
Question 31. Which one of the amino acids can be synthesised in the body?
Question 32. Which of the following is not true about amino acids?
Question 33. A compound which contains both ………… and ………… is called amino acid. The amino acids is polypeptide chain are joined by ………/ bonds.
Question 34. Denaturation of protein leads to loss of its biological activity by
Question 35. Proteins are condensation polymers of
Question 36. Mark the wrong statement about denaturation of proteins
Question 37. In fibrous proteins, polypeptide chains are held together
Question 38. Which type of interactions are responsible for making the a-helix structure stable?
Question 39. Secondary structure of protein refers to
Question 40. What are the hydrolysis products of sucrose?
Question 41. Carbohydrates are stored in human body as the polysaccharide
Question 42. The glycosidic linkage involved in linking the glucose units in amylose part of starch is
Question 43. Which of the following B group vitamins can be stored in our body?
Question 44. Which of the following bases is not present in DNA?
Question 45. Which of the following reactions of glucose can be explained only by its cyclic structure?
Question 46. Glycogen is a branched chain polymer of α-D-glucose units in which chain is formed by C1—C4 glycosidic linkage whereas branching occurs by the formation of C1-C6 glycosidic linkage. Structure of glycogen is similar to _____________________ .
Question 47. Which of the following polymer is stored in the liver of animals?
Question 48. Sucrose (cane sugar) is a disaccharide. One molecule of sucrose on hydrolysis gives
Question 49. Proteins are found to have two different types of secondary structures viz. α-helix and β-pleated sheet structure. α-helix structure of protein is stabilised by:
Question 50. Which of the following acids is a vitamin?