This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 9 Biomolecules – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 9 Biomolecules Quiz 4 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. ..... Breaks down polymers A) Dehydration Synthesis. B) Hydrolysis. C) All the above. D) None of the above. Show Answer Correct Answer: B) Hydrolysis. 2. Adenine bonds with ..... A) Guanine. B) Cytosine. C) Thymine. D) Adenine. Show Answer Correct Answer: C) Thymine. 3. Which type of macromolecule has the monomer nucleotide? A) Nucleic Acid. B) Carbohydrate. C) Protein. D) Lipid. Show Answer Correct Answer: A) Nucleic Acid. 4. What are nucleic acids? A) Fats. B) Sugar. C) Protein. D) DNA. Show Answer Correct Answer: D) DNA. 5. Glucose forms cyanohydrin with HCN indicate A) Presence of OH group. B) Absence of carbonyl group. C) Absence of OH group. D) Presence of carbonyl group. Show Answer Correct Answer: D) Presence of carbonyl group. 6. Which among the following correctly describes lipids? A) It is soluble with water. B) It is insoluble with water. C) All forms of lipids are bad for the health. D) Its monomer is amino acid. Show Answer Correct Answer: B) It is insoluble with water. 7. Which biomolecule is useful for insulation and energy storage in the human body? A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: B) Lipids. 8. DNA and RNA are polymers that belong to A) Lipids. B) Nucleic acids. C) Carbohydrates. D) Proteins. Show Answer Correct Answer: B) Nucleic acids. 9. What are special types of proteins that act as catalysts? A) Polysaccharides. B) Enzymes. C) Lipids. D) DNA. Show Answer Correct Answer: B) Enzymes. 10. Which of the following is NOT a class of biomolecules mentioned? A) Lipids. B) Vitamins. C) Carbohydrates. D) Proteins. Show Answer Correct Answer: B) Vitamins. 11. Which type of biomolecule is most involved in catalyzing biochemical reactions? A) Nucleic Acids. B) Proteins. C) Carbohydrates. D) Lipids. Show Answer Correct Answer: B) Proteins. 12. What are the 4 nitrogen bases of DNA? A) Adenine, thymine, cytoplasm, and guanine. B) Adenine, thymine cytosine, and guanine. C) Adenine, thymine, cytosine, and gylcerol. D) Adenine, thymine, cytosine, and glucose. Show Answer Correct Answer: B) Adenine, thymine cytosine, and guanine. 13. Which of the following may be caused by a lack of enough proteins in your diets? A) Frail nails and hair. B) Fat deposit in your iris. C) Low blood-sugar levels. D) High blood pressure. Show Answer Correct Answer: A) Frail nails and hair. 14. What is the basic building block of matter? A) Atom. B) Cell. C) All the above. D) None of the above. Show Answer Correct Answer: A) Atom. 15. Which of the following is a non-reducing sugar? A) Maltose. B) Sucrose. C) Lactose. D) Glucose. Show Answer Correct Answer: B) Sucrose. 16. What are the three main types of lipids found in the body? A) Triglycerides, phospholipids, and sterols. B) Monosaccharides, disaccharides, polysaccharides. C) Proteins, carbohydrates, nucleic acids. D) Saturated, unsaturated, trans fats. Show Answer Correct Answer: A) Triglycerides, phospholipids, and sterols. 17. Biochemical reactions that require high temperatures to proceed are able to take place at body temperature within the cells of living organisms. Which factor is mainly responsible for allowing biochemical reactions to proceed at body temperature? A) The cellular enzymes act as catalysts. B) The small size of cells keeps reactants together. C) The pH of the cytoplasm increases reaction rate. D) The reactants are present in small quantities in the cell. Show Answer Correct Answer: A) The cellular enzymes act as catalysts. 18. What are the monomers of carbohydrates? A) Glycerol & Fatty Acids. B) Amino Acids. C) Nucleotides. D) Monosaccharides. Show Answer Correct Answer: D) Monosaccharides. 19. N the ..... of tRNA, three unpaired nucleotides are present called as anticodon which pair with codon present on mRNA. A) DHU loop. B) Amino acid binding loop. C) T loop. D) Anticodon loop. Show Answer Correct Answer: D) Anticodon loop. 20. An advertisement for a health supplement for dogs claims to build lean muscle and strengthen tendons and ligaments, as well as provide energy. Which two biomolecules must the supplement contain to provide these benefits? A) Carbohydrates and lipids. B) Proteins and carbohydrates. C) Nucleic acids and carbohydrates. D) Lipids and nucleic acids. Show Answer Correct Answer: B) Proteins and carbohydrates. 21. Glycogen and starch are A) Nucleic acids. B) Lipids. C) Carbohydrates. D) Proteins. Show Answer Correct Answer: C) Carbohydrates. 22. Function:insulation A) Carbohydrate. B) Nucleic Acid. C) Protein. D) Lipid. Show Answer Correct Answer: D) Lipid. 23. Which biomolecule contains pastas and breads? A) Nucleic Acid. B) Protein. C) Carbohydrate. D) Lipid. Show Answer Correct Answer: C) Carbohydrate. 24. What is the major function of lipids? A) Cell signaling. B) Energy storage. C) Muscle tissue formation. D) Cell membrane structure. Show Answer Correct Answer: B) Energy storage. 25. DNA and RNA differ in A) Sugar. B) Purines. C) Pyrimidines. D) Both (a) and (c). Show Answer Correct Answer: D) Both (a) and (c). 26. A molecule that is produced by living things is called a ..... A) Gas. B) Biomolecule. C) Carbon. D) Molecule. Show Answer Correct Answer: B) Biomolecule. 27. Just under an orca's skin lies a thick layer of blubber. Blubber helps insulate a whale from heat loss. Based on this information, which biomolecule is blubber primarily made of? A) Lipids. B) Carbohydrates. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: A) Lipids. 28. Which biomolecule is made of nucleotides and contain your DNA? A) Lipids. B) Nucleic Acid. C) Protein. D) Carbohydrate. Show Answer Correct Answer: B) Nucleic Acid. 29. Examples:Insulin and Hemoglobin A) Nucleic Acid. B) Lipid. C) Carbohydrate. D) Protein. Show Answer Correct Answer: D) Protein. 30. Lipids are made up of which of the following? A) Glycerol and fatty acids tails. B) Glycerol and monolipids. C) Fatty acids and phosolipids. D) Amino acids and nucleotides. Show Answer Correct Answer: A) Glycerol and fatty acids tails. 31. The shape of the DNA molecule is called ..... A) Double helix. B) Deoxyribose twist. C) Dodecahedron. D) Spiral staircase. Show Answer Correct Answer: A) Double helix. 32. Why are lipids important? A) They make DNA and are responsible for the coding of your traits. B) They build muscle and work as enzymes. C) They are a fast source of energy. D) They provide insulation (warmth) and long term energy. Show Answer Correct Answer: D) They provide insulation (warmth) and long term energy. 33. Biomolecules consist mainly of the elements ..... A) Carbon, Hydrogen, Oxygen, Potassium. B) Nitrogen, Hydrogen, Oxygen, Sodium. C) Carbon, Nitrogen, Hydrogen, Sulfur. D) Carbon, Nitrogen, Hydrogen, Oxygen. Show Answer Correct Answer: D) Carbon, Nitrogen, Hydrogen, Oxygen. 34. What are the functions of carbohydrates in the body? A) Carbohydrates are harmful to the body and should be avoided. B) Carbohydrates have no function in the body. C) Carbohydrates are only used for energy storage in the body. D) Carbohydrates serve as the primary source of energy for the body and also play a role in cell signaling, immune function, and the structure of DNA and RNA. Show Answer Correct Answer: D) Carbohydrates serve as the primary source of energy for the body and also play a role in cell signaling, immune function, and the structure of DNA and RNA. 35. In a chemical reaction, the chemicals on the left side of a reaction arrow ( ..... $\rightarrow$ ..... ) are called A: ..... and the the chemicals on the right side are called B: ..... A) A:Reactants; B:Ingredients. B) A:Products; B:Ingredients. C) A:Reactants; B:Products. D) A:Ingredients; B:Products. Show Answer Correct Answer: C) A:Reactants; B:Products. 36. Which of the following biomolecules typically contains both nitrogen and phosphate? A) Nucleic acid. B) Carbohydrate. C) Lipid. D) Protein. Show Answer Correct Answer: A) Nucleic acid. 37. Which biomolecules provide quick energy for the cell? A) Nucleic Acids. B) Lipids. C) Carbohydrates. D) Proteins. Show Answer Correct Answer: C) Carbohydrates. 38. The following equation represents the digestion of a protein.Peptide + Water $\rightarrow$ Amino acid + Amino Acid What type of reaction does this demonstrate? A) Single replacement. B) Dehydration synthesis. C) Combustion. D) Hydrolysis. Show Answer Correct Answer: D) Hydrolysis. 39. It is essential for the storage and expression of genetic information. A) Protein. B) Nucleic Acid. C) Carbohydrate. D) Lipid. Show Answer Correct Answer: B) Nucleic Acid. 40. What type of energy makes a battery useful? A) Nuclear. B) Chemical. C) Electrical. D) Magnetic. Show Answer Correct Answer: B) Chemical. 41. The small repeating units that make up proteins are called A) Fatty acids. B) Nucleotides. C) Amino acids. D) Monosaccharides. Show Answer Correct Answer: C) Amino acids. 42. The alpha and beta forms of glucose are A) Isomers of D (+) glucose and L (-) glucose respectivel. B) Diastereomers of glucose. C) Anomers of glucose. D) Isomers which differ in the configuration of C-2. Show Answer Correct Answer: C) Anomers of glucose. 43. What do monomers do? A) Create essential proteins. B) Splits to make more cells. C) Stores energy. D) Bond to make a polymer. Show Answer Correct Answer: D) Bond to make a polymer. 44. What does the element C stand for? A) Carbon. B) Calcium. C) Chalk. D) Cesium. Show Answer Correct Answer: A) Carbon. 45. The waxy, organic substances used by aquatic birds to coat their feathers, when analyzed consists mostly of A) Lipids. B) Carbohydrates. C) Nucleic acids. D) Proteins. Show Answer Correct Answer: A) Lipids. 46. Which of the following is a characteristic of lipids? A) They are soluble in water. B) They are composed of amino acids. C) They are a major component of cell membranes. D) They store genetic information. Show Answer Correct Answer: C) They are a major component of cell membranes. 47. Which of the following acid is a vitamin A) Saccharic acid. B) Ascorbic acid. C) Adipic acid. D) Aspartic acid. Show Answer Correct Answer: B) Ascorbic acid. 48. What biomolecule serves as structural materials in hair, nails and connective tissues? A) Lipid. B) Nucleic acid. C) Protein. D) Carbohydrate. Show Answer Correct Answer: C) Protein. 49. Which contains carbon, hydrogen, oxygen and has a ring-like structure? A) Carbohydrates. B) Nucleic acid. C) Proteins. D) Lipids. Show Answer Correct Answer: A) Carbohydrates. 50. Which of the following is NOT included in the group? A) Sugar. B) Oil. C) Fats. D) Waxes. Show Answer Correct Answer: A) Sugar. 51. Lipids key role (function ) is: A) Store energy. B) Instant energy for cells/body. C) Immunity, chemical reactions in the body, cell metabolism, contract muscles, regulate other proteins. D) Heredity/genetic information. Show Answer Correct Answer: A) Store energy. 52. FATTY ACIDS AND GLYCEROL ARE THE BUILDING BLOCKS OF ..... A) LIPIDS. B) PROTEINS. C) NUCLEIC ACIDS. D) CARBOHYDRATES. Show Answer Correct Answer: A) LIPIDS. 53. The chain of monomers that form proteins are called ..... A) The quaternary structure. B) The secondary structure. C) The tertiary structure. D) The primary structure. Show Answer Correct Answer: D) The primary structure. 54. The monomer for a nucleic acid is: A) Amino acid. B) Fatty acid. C) Monosaccharide. D) Nucleotide. Show Answer Correct Answer: D) Nucleotide. 55. The biomolecule that stores our genetic information. A) Nucleic acids. B) Lipids. C) Proteins. D) Carbohydrates. Show Answer Correct Answer: A) Nucleic acids. 56. Which biomolecule builds muscle? A) Lipids. B) Proteins. C) Carbohydrates. D) Nucleic acids. Show Answer Correct Answer: B) Proteins. 57. Information and instructions on how to build and operate the body are stored in and carried out by ..... A) Carbohydrates. B) Proteins. C) Lipids. D) Nucleic Acids. Show Answer Correct Answer: D) Nucleic Acids. 58. Which biomolecule is an antibody that helps defend against disease? A) Lipids. B) Proteins. C) Carbohydrates. D) Nucleic Acids. Show Answer Correct Answer: B) Proteins. 59. Proteins are found to have two different types of secondary structures viz. $\alpha$-helix and $\beta$-pIeated sheet structure, $\alpha$-helix structure of protein is stabilised by A) Van der Waals forces. B) Hydrogen bonds. C) Dipole-dipole interactions. D) Peptide bonds. Show Answer Correct Answer: B) Hydrogen bonds. 60. What term means: "many amino acids connected together" A) Polysaccharide. B) Polycalorie. C) Polypeptide. D) Polyglyceride. Show Answer Correct Answer: C) Polypeptide. ← PreviousNext →Related QuizzesScience QuizzesClass 11 QuizzesClass 11 Biology Chapter 9 Biomolecules Quiz 1Class 11 Biology Chapter 9 Biomolecules Quiz 2Class 11 Biology Chapter 9 Biomolecules Quiz 3Class 11 Biology Chapter 9 Biomolecules Quiz 5Class 11 Biology Chapter 9 Biomolecules Quiz 6Class 11 Biology Chapter 9 Biomolecules Quiz 7Class 11 Biology Chapter 9 Biomolecules Quiz 8Class 11 Biology Chapter 9 Biomolecules Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books