This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 9 Biomolecules – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 9 Biomolecules Quiz 9 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which organic macromolecules are composed of chains of amino acids that join to form the structural components of organisms. A) Lipids. B) Proteins. C) Amino Acids. D) Carbohydrates. Show Answer Correct Answer: B) Proteins. 2. Which biomolecules contains your genetic information? A) Lipids. B) Carbohydrates. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: D) Nucleic Acids. 3. What is the main role of carbohydrates in the body? A) Store genetic information. B) Provide energy. C) Catalyze reactions. D) Form cell membranes. Show Answer Correct Answer: B) Provide energy. 4. Which biomolecule has thousands of different varieties and is responsible for performing many jobs in the body? A) Nucleic Acids. B) Carbohydrates. C) Lipids. D) Proteins. Show Answer Correct Answer: D) Proteins. 5. The prefix "poly" means ..... A) One. B) Want a cracker. C) Two. D) Many. Show Answer Correct Answer: D) Many. 6. Which group of biomolecules is involved in storing and transmitting genetic (hereditary) material? A) Nucleic acids. B) Lipids. C) Carbohydrates. D) Proteins. Show Answer Correct Answer: A) Nucleic acids. 7. When protein loses its 3D shape it's nonfunctional and is said to be A) Denatured. B) Essential. C) Structural. D) Saturated. Show Answer Correct Answer: A) Denatured. 8. Which elements are found in lipids? A) C, H, O, N, P. B) C, H, O, N. C) C, H, O. D) None of the above. Show Answer Correct Answer: C) C, H, O. 9. Function:cell membrane A) Lipid. B) Carbohydrate. C) Nucleic Acid. D) Protein. Show Answer Correct Answer: A) Lipid. 10. Which of the following groups are all monosaccharides? A) Glycogen, cellulose and starch. B) Glucose, galactose and fructose. C) Maltose, lactose and fructose. D) Sucrose, glucose and fructose. Show Answer Correct Answer: B) Glucose, galactose and fructose. 11. ..... is a synonym for protein and is its polymer. A) Polymerose. B) Polypeptide. C) Polysaccharide. D) Polyprotein. Show Answer Correct Answer: B) Polypeptide. 12. The primary structure of a protein is determined by the A) Order of amino acids. B) R group. C) Number of attached functional groups. D) Number of peptide bonds. Show Answer Correct Answer: A) Order of amino acids. 13. Mechanical digestion A) Results in a new substance. B) Is a physical process. C) Is not a physical process. D) Does not break down food. Show Answer Correct Answer: B) Is a physical process. 14. Which of the following is responsible for the alpha-helical structure of proteins? A) Hydrogen bonds. B) Ionic interactions. C) Hydrophobic interactions. D) Nonpolar covalent bonds. Show Answer Correct Answer: A) Hydrogen bonds. 15. A nitrogenous base is linked to the pentose sugar through a ..... to form a nucleoside. A) Phosphodiester bonds. B) N-glycosidic linkage. C) Hydrogen bond. D) None of the above. Show Answer Correct Answer: B) N-glycosidic linkage. 16. What are some characteristics of a positive Sudan IV result: A) The solution will separate and produce a dark pink/red ring indicating the presence of lipid. B) The solution will turn a dark brown color indicating starch. C) The solution will turn a bright blue color indicating the presence of simple sugars. D) The solution will dark purple color indicating the presence of protein. Show Answer Correct Answer: A) The solution will separate and produce a dark pink/red ring indicating the presence of lipid. 17. The monomer of a nucleic acid is called ..... A) A monosaccharide. B) A fatty acid. C) A nucleotide. D) An amino acid. Show Answer Correct Answer: C) A nucleotide. 18. Which biomolecules can be DNA and RNA? A) Carbohydrates. B) Proteins. C) Nucleic Acids. D) Lipids. Show Answer Correct Answer: C) Nucleic Acids. 19. What is the function of lipids? A) Provides quick energy. B) Stores energy. C) Helps with growth and repair of tissues. D) Stores genetic information. Show Answer Correct Answer: B) Stores energy. 20. Which biomolecule is made of amino acids? A) Lipid. B) Protein. C) Nucleic Acid. D) Carbohydrate. Show Answer Correct Answer: B) Protein. 21. Which two biomolecules are primarily used as energy sources by cells? A) Lipids & Nucleic Acids. B) Nucleic Acids & Carbohydrates. C) Carbohydrates & Lipids. D) Proteins & Carbohydrates. Show Answer Correct Answer: C) Carbohydrates & Lipids. 22. A lipid consists of a glycerol, charged phosphate group, and 3 ..... chains. A) Glycerol. B) Nucleic Acid. C) Peptide. D) Fatty Acid. Show Answer Correct Answer: D) Fatty Acid. 23. Sucrose is an example of A) Simple sugar. B) Polysaccharide. C) Complex sugars. D) Monosaccharide. E) Disaccharide. Show Answer Correct Answer: E) Disaccharide. 24. What type of biomolecule is primarily responsible for storing and transmitting genetic information? A) Carbohydrates. B) Proteins. C) Lipids. D) Nucleic Acids. Show Answer Correct Answer: D) Nucleic Acids. 25. Which macromolecule contains C, H, O, and has hydrogen and oxygen in a 2:1 ratio? A) Lipids. B) Nucleic acid. C) Proteins. D) Carbs. Show Answer Correct Answer: A) Lipids. 26. The level of polypeptide folding in which the primary sequence coils around itself, stabilized by regularly spaced hydrogen bonds, is called A) Beta sheet. B) Alpha helix. C) Tertiary structure. D) Primary structure. E) Quaternary structure. Show Answer Correct Answer: B) Alpha helix. 27. Organic compounds in which molecules are made up of building blocks containing amino groups are classified as- A) Carbohydrates. B) Fatty acids. C) Lipids. D) Proteins. Show Answer Correct Answer: D) Proteins. 28. This macromolecule is for the bodily structures present in our muscles, bones, tendons, and ligaments. It also plays an important role in biological reactions. A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic acids. Show Answer Correct Answer: C) Proteins. 29. Which biomolecules are used for the growth and repair of cells? A) Carbohydrates. B) Proteins. C) Nucleic acids. D) Lipids. Show Answer Correct Answer: B) Proteins. 30. What is the monomer of proteins? A) Nucleotide. B) Glucose. C) Amino acid. D) Maltose. Show Answer Correct Answer: C) Amino acid. 31. Proteins contain the following elements: A) CHO. B) CHON. C) CHONP. D) None of the above. Show Answer Correct Answer: B) CHON. 32. What are the monomers of a protein called? A) Monosaccharides. B) Fatty Acids & Glycerol. C) Amino Acids. D) Nucleotides. Show Answer Correct Answer: C) Amino Acids. 33. Nucleotides are a monomer of which biomolecule? A) Lipids. B) Nucleic acids. C) Carbohydrates. D) Proteins. Show Answer Correct Answer: B) Nucleic acids. 34. Which biomolecule is made of nucleotides and contain you DNA? A) Lipids. B) Protein. C) Nucleic Acid. D) Carbohydrate. Show Answer Correct Answer: C) Nucleic Acid. 35. The arrangement of which three components is used to distinguish one molecule from another? A) Carbon, hydrogen, and oxygen. B) Glucose, fructose, and ribose. C) Peptide, fatty acid, and purine. D) Water, carbon dioxide, and notrogen. Show Answer Correct Answer: A) Carbon, hydrogen, and oxygen. 36. In aqueous solution, an amino acid exist as A) Cation. B) Zwitter ion. C) Anion. D) Neutral molecule. Show Answer Correct Answer: B) Zwitter ion. 37. What are the different types of carbohydrates based on their molecular structure? A) Starch, Cellulose, Glycogen. B) Monosaccharides, Disaccharides, Polysaccharides. C) Simple carbohydrates, Complex carbohydrates, Fiber. D) Glucose, Fructose, Sucrose. Show Answer Correct Answer: B) Monosaccharides, Disaccharides, Polysaccharides. 38. Which of the following is NOT a biomolecules? A) Protein. B) Water. C) Carbohydrate. D) Lipid. E) Nucleic acid. Show Answer Correct Answer: B) Water. 39. The base that pairs with Thymine in DNA A) Adenine. B) Guanine. C) Helicase. D) Nucleotide. Show Answer Correct Answer: A) Adenine. 40. When 2 amino acids undergo condensation, what bond is formed? A) Hydrogen bond. B) Peptide bond. C) Hydrophobic interaction. D) Van der Waals. Show Answer Correct Answer: B) Peptide bond. 41. What are carbohydrates? A) Sugar. B) Fat. C) DNA. D) Protein. Show Answer Correct Answer: A) Sugar. 42. Another word for lipid is ..... A) Fiber. B) Calcium. C) Fat. D) Sugar. Show Answer Correct Answer: C) Fat. 43. Monosaccharide are the building blocks of these biomolecules. A) NUCLEIC ACID. B) PROTEINS. C) LIPIDS (fats). D) CARBOHYDRATES. Show Answer Correct Answer: D) CARBOHYDRATES. 44. Which of the following are the main elements found in biomolecules? A) C, He, O, Mg, Pd, S. B) C, H, Os, Ma, Ni, Se. C) Ca, He, Os, Ni, Pt, Si. D) C, H, O, N, P, S. Show Answer Correct Answer: D) C, H, O, N, P, S. 45. An enzyme speeds up a chemical reaction in the cell but can only be used once. True or False? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 46. Amino acids can be classified by the- A) Characteristics of their side chains. B) Number of peptide bonds. C) Number of disulfide bridges they can form. D) Number of carbon-carbon double. Show Answer Correct Answer: A) Characteristics of their side chains. 47. Function:speed up chemical reactions A) Carbohydrate. B) Nucleic Acid. C) Protein. D) Lipid. Show Answer Correct Answer: C) Protein. 48. How how carbohydrates and lipids similar? A) Both contain C, H, O, N, P and store energy. B) Both contain C, H, O, N and give energy. C) Both contain C, H, O, N, S and store energy. D) Both contain C, H, O and give energy. Show Answer Correct Answer: D) Both contain C, H, O and give energy. 49. Which biomolecule can be identified using the Biuret test, which turns purple in its presence? A) Carbohydrates. B) Proteins. C) Lipids. D) Nucleic Acids. Show Answer Correct Answer: B) Proteins. 50. Which monomer belongs to the biomolecule that contains your genetic information? A) Fatty Acid. B) Monosaccharide. C) Amino Acid. D) Nucleotide. Show Answer Correct Answer: D) Nucleotide. 51. A substance that increases the rate of a chemical reaction without being changed itself A) Product. B) Enzyme catalyst. C) Base. D) Reactant. Show Answer Correct Answer: B) Enzyme catalyst. 52. Why do people who have a fever usually feel they have no energy, or are really tired? A) DNA gets twisted into a double helix at high temperatures. B) Enzymes that control energy reactions lose their shapes at high temperatures. C) Proteins lose fatty acid molecules at the end of the biomolecular chain. D) Fever interferes with carbohydrate digestion. Show Answer Correct Answer: B) Enzymes that control energy reactions lose their shapes at high temperatures. 53. The monomer Amino acids make up the polymer ..... A) Proteins. B) Carbohydrates. C) Lipids. D) Nucleic Acids. Show Answer Correct Answer: A) Proteins. 54. What is the primary function of nucleic acids in living organisms? A) Store energy. B) Provide structural support. C) Store and transmit genetic information. D) Act as enzymes. Show Answer Correct Answer: C) Store and transmit genetic information. 55. What are foods that are high in carbohydrates? A) Eggs, fish, poultry. B) Cheese, meats, vegetables. C) Bread, potatoes, and pasta. D) Multitude of oils, butter and condiments. Show Answer Correct Answer: C) Bread, potatoes, and pasta. 56. Which of the following describes a protein? A) Fats. B) DNA and RNA. C) Polypeptide Chain. D) Sugars and Starches. Show Answer Correct Answer: C) Polypeptide Chain. 57. Which biomolecule functions include enzymes which speeds the rate of chemical reactions, structural components in cells, mechanical functions in muscles and cytoskeleton, cell signaling, and immune response; provides structure and helps with chemical reactions A) Protein. B) Nucleic Acid. C) Carbohydrate. D) Lipids. Show Answer Correct Answer: A) Protein. 58. Repeating units of monosaccharides make ..... ? A) Proteins. B) Lipids. C) Nucleic acids. D) Polysaccharides. Show Answer Correct Answer: D) Polysaccharides. 59. The monomer for carbohydrates is a? A) Nucleotide. B) Monosaccharide. C) Triglyceride. D) Amino acid. Show Answer Correct Answer: B) Monosaccharide. 60. What is the structure of DNA? A) DNA is a linear structure made up of amino acids. B) DNA is a triple helix structure made up of three strands of nucleotides. C) DNA is a single-stranded structure made up of nucleotides. D) DNA is a double helix structure made up of two strands of nucleotides that are connected by hydrogen bonds. Show Answer Correct Answer: D) DNA is a double helix structure made up of two strands of nucleotides that are connected by hydrogen bonds. ← 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 4Class 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books