This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 9 Biomolecules – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 9 Biomolecules Quiz 5 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the role of nucleic acids in cells? A) Store energy. B) Catalyze reactions. C) Store and transmit genetic information. D) Provide structural support. Show Answer Correct Answer: C) Store and transmit genetic information. 2. Monomer:fatty acid + glycerol A) Protein. B) Carbohydrate. C) Nucleic Acid. D) Lipid. Show Answer Correct Answer: D) Lipid. 3. My cousin said that Gatorade is filled with protein, I don't believe him. Which test should I run to see if he is right or wrong? A) Iodine. B) Biuret. C) Sudan IV. D) Benedict. Show Answer Correct Answer: B) Biuret. 4. Smallest unit a biomolecule can be broken down into while still maintaining the properties. A) Atom. B) Polymer. C) Monomer. D) Hydrolysis. Show Answer Correct Answer: C) Monomer. 5. Carbohydrates are also known as A) Fats. B) Bases. C) Acids. D) Sugars. Show Answer Correct Answer: D) Sugars. 6. The conditions for an enzyme to work need to be ..... A) Specific. B) Variable. C) Don't matter. D) Normal. Show Answer Correct Answer: A) Specific. 7. Which biomolecule is properly matched to its monomer? A) Carbohydrate:monosaccharide. B) Lipid:nucleotide. C) Polypeptide:1 glycerol + 3 fatty acids. D) Nucleic acid:amino acid. Show Answer Correct Answer: A) Carbohydrate:monosaccharide. 8. An enzyme serves as a place where a chemical reaction can occur because- A) The shape of the substrates fits perfectly into the shape of the enzyme's active site. B) The charge on the enzyme's active site is the same as the charge on the substrates. C) The enzyme is one of the reactants in the reaction. D) The enzyme is a substrate. Show Answer Correct Answer: A) The shape of the substrates fits perfectly into the shape of the enzyme's active site. 9. Which statement about the enzymes is true? A) They act to speed up a biochemical reaction. B) They are made up of protein or RNA in some cases. C) They are sensitive to temperature and pH. D) All. Show Answer Correct Answer: D) All. 10. Which biomolecule is used to store and transport genetic information? A) Lipids. B) Protein. C) Carbohydrates. D) Nucleic acid. Show Answer Correct Answer: D) Nucleic acid. 11. (question 21) Which of the following is a simple sugar? A) Lactase. B) Glucose. C) Seeds. D) Flour. Show Answer Correct Answer: B) Glucose. 12. Which of the following biomolecules is most directly involved in the process of cellular respiration to provide energy for cells? A) Nucleic Acids. B) Lipids. C) Carbohydrates. D) Proteins. Show Answer Correct Answer: C) Carbohydrates. 13. Liam, Luna, and Ethan are having a debate. They are trying to figure out which biomolecule is composed of nucleotides. Can you help them settle this? A) Nucleic acids. B) Carbohydrates. C) Proteins. D) Lipids. Show Answer Correct Answer: A) Nucleic acids. 14. (T or F) Carbohydrates and Lipids both have carbon, hydrogen, and oxygen (CHO) as the elements that make them up A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 15. What does soluble mean? A) Can not be dissolved in water. B) Can make energy from the sun. C) Can be eaten. D) Can be dissolved in water. Show Answer Correct Answer: D) Can be dissolved in water. 16. Which word means "to speed up" ? A) Digestion. B) Synthesis. C) Catalyze. D) Dentaure. Show Answer Correct Answer: C) Catalyze. 17. (question 8) What are the four biological molecules? A) Proteins, carbohydrates, lipids, nucleic acids. B) Proteins, enzymes, cells, lipids. C) Water, air, earth, and fire. D) Carbon, oxygen, nitrogen, phosphorous. Show Answer Correct Answer: A) Proteins, carbohydrates, lipids, nucleic acids. 18. Which biomolecules provide quick energy for the cell and also provide materials to build the cell membrane/wall? A) Lipids. B) Proteins. C) Carbohydrates. D) Nucleic Acids. Show Answer Correct Answer: C) Carbohydrates. 19. Chemical reaction which REMOVES water from between two or more monomers in order to bond them together to make a polymer. A) Polymer. B) Dehydration synthesis. C) Hydrolysis. D) Monomer. Show Answer Correct Answer: B) Dehydration synthesis. 20. Chains of amino acids are A) Lipids. B) Carbohydrates. C) Proteins. D) Nucleic acids. Show Answer Correct Answer: C) Proteins. 21. (question 17) A monomer is ..... A) Is an inorganic molecule. B) A single element. C) A building block for polymers. D) A single atom. Show Answer Correct Answer: C) A building block for polymers. 22. Which of the following reactions forms peptide bonds? A) Hydration. B) Dehydration. C) Hydrogenation. D) None of these answers. Show Answer Correct Answer: B) Dehydration. 23. What is the key role (function) of carbohydrates? A) Energy storage. B) Immunity, muscles, structure for tissues, cell metabolism. C) Instant energy for cells and body functions. D) Genetic information (heredity). Show Answer Correct Answer: C) Instant energy for cells and body functions. 24. Which biomolecule is important source of energy for humans; glucose for human cells, tissues, and organs; provides fiber, sugar, and starches; provides structural support, cell wall, and cell membrane maker? A) Carbohydrate. B) Nucleic Acid. C) Protein. D) Lipid. Show Answer Correct Answer: A) Carbohydrate. 25. If an enzyme becomes over heated what effect, if any, will the heat have on the enzymatic activity? A) The enzyme will not store much chemical energy. B) The enzyme will be denatured and cannot catalyze reactions. C) The enzyme will lose its net electrical charge. D) The enzyme will lose stored genetic information. Show Answer Correct Answer: B) The enzyme will be denatured and cannot catalyze reactions. 26. Which is NOT an example of Carbs? A) Lettuce. B) Potato. C) Corn. D) Pasta. Show Answer Correct Answer: A) Lettuce. 27. ..... PO ..... CH what elements essential for life are missing from the acronym? A) Fe and Na. B) Ca and Na. C) S and N. D) S and Na. Show Answer Correct Answer: C) S and N. 28. The way an organism reacts is called- A) A response. B) Homeostasis. C) Photosynthesis. D) A stimulus. Show Answer Correct Answer: A) A response. 29. The process of making RNA from DNA is called ..... A) Togetherase. B) Transcription. C) DNA decoding. D) Translation. Show Answer Correct Answer: B) Transcription. 30. True or False:Enzymes are substrate specific A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 31. Which biomolecule is primarily responsible for storing energy for later use? A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: B) Lipids. 32. What is a peptide bond? A) Bond that holds two amino acids together. B) A bond that holds hydrogen and oxygen molecules together. C) A bond that holds the phosphate group of one nucleotide and a sugar of a neighboring nucleotide. D) A bond that is formed by the sharing of electrons. Show Answer Correct Answer: A) Bond that holds two amino acids together. 33. 9A. Which of the following biomolecules typically contain both nitrogen and phosphate? A) Nucleic acid. B) Lipid. C) Proteinpro. D) Carbohydrate. Show Answer Correct Answer: A) Nucleic acid. 34. Each polypeptide in a protein has aminoacids linked with each other in a specific sequence. This sequence of amino acids is said to be ..... A) Quaternary structure of proteins. B) Secondary structure of proteins. C) Tertiary structure of proteins. D) Primary structure of proteins. Show Answer Correct Answer: D) Primary structure of proteins. 35. A mutation in DNA would initially start with me. A) Carbohydrates. B) Nucleic Acids. C) Lipids. D) Proteins. Show Answer Correct Answer: B) Nucleic Acids. 36. You need a steady supply of amino acids in your diet to maintain a healthy body. In order to meet this need, you should make sure you eat enough of which class of biomolecule? A) Carbohydrates. B) Nucleic Acids. C) Proteins. D) Lipids. Show Answer Correct Answer: C) Proteins. 37. What are the atoms that all living things are made from? A) Carbon, Hydrogen, Oxygen, Potassium & Nitrogen. B) Cobalt, Horses, Organs, Potatoes & Nickels. C) Carbon, Helium, Oxygen, Potassium & Nitrogen. D) Carbon, Hydrogen, Oxygen, Phosphorus & Nitrogen. Show Answer Correct Answer: D) Carbon, Hydrogen, Oxygen, Phosphorus & Nitrogen. 38. In a molecule of double stranded DNA, the amount of adenine present is always equal to the amount of ..... A) Uracil. B) Guanine. C) Thymine. D) Cytosine. Show Answer Correct Answer: C) Thymine. 39. Which statement best describes how molecules move during DIFFUSION? A) They move from an area of HIGH concentration to an area of LOW concentration. B) They move from an area of LOW concentration to an area of HIGH concentration. C) They move closer together. D) None of the above. Show Answer Correct Answer: A) They move from an area of HIGH concentration to an area of LOW concentration. 40. Which of the following elements is not present in carbohydrates? A) Carbon. B) Hydrogen. C) Oxygen. D) Nitrogen. Show Answer Correct Answer: D) Nitrogen. 41. Milk, Cheese, Butter, and Oils A) Proteins. B) Carbohydrates. C) Lipids. D) Nucleic Acids. Show Answer Correct Answer: C) Lipids. 42. Which of the following is NOT a polymer? A) Protein. B) Lipids. C) Starch. D) Nucleic acids. Show Answer Correct Answer: B) Lipids. 43. Building blocks of polymers. A) Monomer. B) Glycerol. C) Monosaccharide. D) Polypeptide. Show Answer Correct Answer: A) Monomer. 44. Which organic molecules is paired with its function? A) Nucleic acid-to store energy. B) Lipids-to regulate metabolic. C) Carbohydrates-to provide quick-release energy. D) Protein-to provide insulation. Show Answer Correct Answer: C) Carbohydrates-to provide quick-release energy. 45. CHO with a 1:2:1 ratio A) Protein. B) Carbohydrate. C) Nucleic acid. D) Lipid. Show Answer Correct Answer: B) Carbohydrate. 46. Which is a general characteristic of lipids? A) Lipids contain nitrogen. B) Lipids are insoluble in water. C) Lipids contain chains of amino acids. D) Lipids are soluble in water. Show Answer Correct Answer: B) Lipids are insoluble in water. 47. Monosaccharides combine to form ..... A) Lipids. B) Nucleic acids. C) Proteins. D) Carbhoydrates. Show Answer Correct Answer: D) Carbhoydrates. 48. Where does mechanical and chemical digestion take place? A) Mouth. B) Stomach. C) Small intesting. D) Mouth and stomach. Show Answer Correct Answer: D) Mouth and stomach. 49. Beeswax is a waxy substance that is produced by bees and then harvested by humans for a variety of uses. Ancient Romans used beeswax as a waterproofing agent because it is not water-permeable. Beeswax is which of the following types of organic molecule? A) Carbohydrate. B) Nucleic acid. C) Lipid. D) Protein. Show Answer Correct Answer: C) Lipid. 50. What type of linkage is present in $\beta$pleated sheet of protein? A) Peptide linkage. B) Intermolecular H bonding. C) Disulphide linkage. D) Intramolecular H bonding. Show Answer Correct Answer: B) Intermolecular H bonding. 51. Which biomolecules contain N? A) Nucleic acids and carbohydrates. B) Carbohydrates and fatty acids. C) Nucleic acids and amino acids. D) Amino acids and carbohydrates. Show Answer Correct Answer: C) Nucleic acids and amino acids. 52. (question 15) Oils are which type of macromolecule? A) Lipids. B) Proteins. C) Nucleic acids. D) Carbohydrates. Show Answer Correct Answer: A) Lipids. 53. Repeating units of ..... form nucleic acids (DNA and RNA) A) Monosaccharides. B) Amino acids. C) Nucleotides. D) Fatty acids. Show Answer Correct Answer: C) Nucleotides. 54. What is the primary structural component of cell membranes? A) Nucleic acids. B) Proteins. C) Lipids. D) Carbohydrates. Show Answer Correct Answer: C) Lipids. 55. Which biomolecules play a role in the immune system and in the structure of the cytoskeleton? A) Carbohydrates. B) Lipids. C) Nucleic Acids. D) Proteins. Show Answer Correct Answer: D) Proteins. 56. Which of the following is the correct pair of biomolecules and their monomers? A) Protein:Amino acid. B) Nucleic Acid:DNA. C) Carbohydrate:Fatty Acids. D) Lipid:Nucleotide. Show Answer Correct Answer: A) Protein:Amino acid. 57. Which among the following elements does not belong to proteins? A) Carbon. B) Nitrogen. C) Oxygen. D) Hydrogen. E) Phosphorous. Show Answer Correct Answer: E) Phosphorous. 58. Which molecule has the highest amount of energy? A) They are equal in energy. B) ADP. C) ATP. D) None of the above. Show Answer Correct Answer: C) ATP. 59. Lipids can be digested into what smaller subunits? A) Amino acids. B) Nucleic acids. C) Glucose. D) Fatty acids. Show Answer Correct Answer: D) Fatty acids. 60. Nucleic Acids have which elements? A) Carbohydrates, Hydrogen, Nitrogen, and Phosphorus. B) Carbon, Hydrogen, Oxygen, Nitrogen, and Phosphorus. C) Carbohydrates, Hydrogen, Oxygen, Nitrogen, Potassium. D) Carbon, Hydrogen, Nitrogen. Show Answer Correct Answer: B) Carbon, Hydrogen, Oxygen, Nitrogen, and Phosphorus. ← 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 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