This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 9 Biomolecules – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 9 Biomolecules Quiz 8 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What does mono-mean? A) One. B) None. C) Many. D) Energy. Show Answer Correct Answer: A) One. 2. Which of the following reagents is used to convert glucose into saccharic acid? A) HI. B) Br2 water. C) NH2OH. D) HNO3. Show Answer Correct Answer: D) HNO3. 3. Which are examples of Nucleic Acids? A) Fats, oils, waxes. B) DNA, RNA. C) Meats, enzyme, lactase, eggs. D) Glucose, pasta, bread. Show Answer Correct Answer: B) DNA, RNA. 4. The monomer of carbohydrates is known as ..... A) Fatty Acid. B) Saccharide. C) Nucleotide. D) Amino Acid. Show Answer Correct Answer: B) Saccharide. 5. Stores energy long term A) Lipids. B) Nucleic acids. C) Carbohydrates. D) Proteins. Show Answer Correct Answer: A) Lipids. 6. What is an example of something that contains nucleic acids? A) Butter. B) Pasta. C) Meat. D) Strawberries (and anything that was once living). Show Answer Correct Answer: D) Strawberries (and anything that was once living). 7. Nucleotides consist of the following elements: A) CHO. B) CHONP. C) CHON. D) None of the above. Show Answer Correct Answer: B) CHONP. 8. Where do substrates bind on an enzyme? A) Surface receptor. B) Calcium channels. C) Voltage-gated channels. D) Active site. Show Answer Correct Answer: D) Active site. 9. A monomer for carbohydrates is: A) Polysaccharide. B) Starch. C) Monosaccharide. D) Glycogen. Show Answer Correct Answer: C) Monosaccharide. 10. The anomeric carbon in D (+) glucose is A) C-1 carbon. B) C-6 carbon. C) C-2 carbon. D) C-5 carbon. Show Answer Correct Answer: A) C-1 carbon. 11. Which biomolecule provides quick energy and gives plants structure? A) Proteins. B) Nucleic Acids. C) Carbohydrates. D) Lipids. Show Answer Correct Answer: C) Carbohydrates. 12. What is an example of a protein? A) Butter. B) Meat. C) Pasta. D) Strawberries. Show Answer Correct Answer: B) Meat. 13. What is the basic formulae for starch? A) C$_{12}$O$_{12}$O$_{11}$. B) (C$_{6}$H$_{12}$O$_{4}$)$_{n}$. C) (C$_{6}$H$_{10}$O$_{5}$)$_{n}$. D) (C$_{6}$H$_{12}$O$_{6}$)$_{n}$. Show Answer Correct Answer: C) (C$_{6}$H$_{10}$O$_{5}$)$_{n}$. 14. What is the primary function of lipids in the body? A) Transport of oxygen, nutrients, and waste products. B) Regulation of body temperature. C) Source of energy, insulation, and protection. D) Building and repairing tissues. Show Answer Correct Answer: C) Source of energy, insulation, and protection. 15. (question 1) Enzymes are a type of which biomolecule? A) Lipid. B) Nucleic Acid. C) Carbohydrate. D) Protein. Show Answer Correct Answer: D) Protein. 16. Nucleic acids are the polymers of ..... A) Bases. B) Nucleotides. C) Nucleosides. D) Sugars. Show Answer Correct Answer: B) Nucleotides. 17. Assertion:Glucose exists in $\alpha$and $\beta$ forms which are called anomers.Reason:These anomers are enantiomers. A) Both A & R are correct and R is the correct explanation. B) Both A & R are correct but R is not the correct explanation. C) A is the correct statement but R is wrong. D) Both A & R are wrong. OR A is wrong & R is correct. Show Answer Correct Answer: C) A is the correct statement but R is wrong. 18. Assertion:Glucose on reacting with HCN forms cyanohydrin.Reason:This reaction indicates the presence of a carbonyl group is an aldehydicgroup. A) Both A & R are correct and R is the correct explanation. B) Both A & R are correct but R is not the correct explanation. C) A is the correct statement but R is wrong. D) Both A & R are wrong. OR A is wrong & R is correct. Show Answer Correct Answer: C) A is the correct statement but R is wrong. 19. Which biomolecule is primarily involved in the structure of cell membranes? A) Proteins. B) Carbohydrates. C) Nucleic acids. D) Lipids. Show Answer Correct Answer: D) Lipids. 20. Which element is not present in carbohydrates? A) Oxygen. B) Nitrogen. C) Hydrogen. D) Carbon. Show Answer Correct Answer: B) Nitrogen. 21. Which of the following is a high protein food that vegans can eat? A) Eggs. B) Soybeans. C) Strawberries. D) Salmon. Show Answer Correct Answer: B) Soybeans. 22. What is the purpose of an enzyme? A) Speed up reactions. B) Raise activation energy. C) Control how many reactions occur. D) Give permission for the reaction. Show Answer Correct Answer: A) Speed up reactions. 23. Amino acids are the building blocks of these biomolecules. A) CARBOHDRATES. B) NUCLEIC ACIDS. C) PROTEINS. D) LIPIDS (fats). Show Answer Correct Answer: C) PROTEINS. 24. Which is the best way to rid of extra fat? A) Eat more fiber. B) Eat more calories than you burn. C) Eat a large lunch and just a small snack for dinner. D) Burn more calories than you eat. Show Answer Correct Answer: D) Burn more calories than you eat. 25. Adenine always bind with A) Thymine. B) Cytosine. C) Guanine. D) Uracil. Show Answer Correct Answer: A) Thymine. 26. What organelle is mostly responsible for turgor pressure? A) Cell wall. B) Cytoplasm. C) Vacuole. D) Nucleus. Show Answer Correct Answer: C) Vacuole. 27. Which of the following best defines denature? A) An enzyme working in optimal conditions. B) An enzyme shape changes to match the substrate. C) A substrate's shape changes to match the enzyme. D) An enzyme's shape changes causing it to no longer catalyze reactions. Show Answer Correct Answer: D) An enzyme's shape changes causing it to no longer catalyze reactions. 28. Which special thing do Nucleic Acids do, that no other biomolecule does? A) Store and carry genetic codes. B) Provide structural support. C) Supply or store energy for the cell. D) Protect organisms from water. Show Answer Correct Answer: A) Store and carry genetic codes. 29. The polymer which folds into proteins A) Amino Acids. B) Nucleic Acids. C) Polynucleotides. D) Polypeptide. Show Answer Correct Answer: D) Polypeptide. 30. Nucleotides are the building blocks of these biomolecules. A) CARBOHYDRATES. B) LIPIDS (fats). C) NUCLEIC ACIDS. D) PROTEINS. Show Answer Correct Answer: C) NUCLEIC ACIDS. 31. Carbohydrates include all of the following food sources except: A) Bread. B) Vegetables. C) Fruits. D) Butter. Show Answer Correct Answer: D) Butter. 32. Lipids/Carbohydrate provide long-term energy for cells. A) Lipids. B) Carbohydrates. C) All the above. D) None of the above. Show Answer Correct Answer: A) Lipids. 33. Example of a monomer A) Starch. B) Glycine. C) DNA. D) Triglycerides. Show Answer Correct Answer: B) Glycine. 34. Which organic molecule would a long-distance runner most likely choose to eat two hours before a race? A) A carbohydrate because it releases energy quickly. B) A protein, because it transports oxygen into the blood stream. C) A lipid because it provides long term energy storage. D) A protein, because it builds muscle mass. Show Answer Correct Answer: A) A carbohydrate because it releases energy quickly. 35. Which biomolecule acts as long-term energy storage for the cell and also cushions and insulates organs? A) Lipids. B) Carbohydrates. C) Nucleic Acids. D) Proteins. Show Answer Correct Answer: A) Lipids. 36. Which of the following organic compounds is the main source of energy in living things? A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic acids. Show Answer Correct Answer: A) Carbohydrates. 37. True or FalseLipids are hydrophobic A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 38. Lipase is produced by the pancreas to help digest fat. Lipase breaks down the fats into fatty acids. What role does the lipase play in this reaction? A) Enzyme. B) Substrate. C) Substrate-enzyme complex. D) Product. Show Answer Correct Answer: A) Enzyme. 39. I can contain long fatty acid chains. A) Nucleic Acids. B) Proteins. C) Lipids. D) Carbohydrates. Show Answer Correct Answer: C) Lipids. 40. Which of the following is the template for the production of RNA within a cell? A) ATP. B) Protein. C) DNA. D) Carbohydrate. Show Answer Correct Answer: C) DNA. 41. When it comes to biomolecules, form fits A) Function. B) Structure. C) Chemical composition. D) Identity. Show Answer Correct Answer: A) Function. 42. A sugar that is a polysaccharide is made up of how many sugars? A) One. B) Two. C) More than two. D) None of the above. Show Answer Correct Answer: C) More than two. 43. What are the building blocks of larger molecules called? A) Monomers. B) Legos. C) Megablocks. D) Polymers. Show Answer Correct Answer: A) Monomers. 44. Which is NOT a function for Lipids? A) Long term Energy Storage. B) Chubify. C) Insulation. D) Cell Membrane. Show Answer Correct Answer: B) Chubify. 45. Which biomolecule has simple sugars and complex starches? A) Nucleic Acid. B) Proteins. C) Lipids. D) Carbohydrates. Show Answer Correct Answer: D) Carbohydrates. 46. When digesting a complex carbohydrate, water is added and simple sugar is obtained through which process? A) Condensation. B) Dehydration. C) Photosynthesis. D) Hydrolysis. Show Answer Correct Answer: D) Hydrolysis. 47. What does N-terminus refer to? A) The end of a protein with a free amine group. B) A protein chain. C) The end of a protein with a free carboxylic acid group. D) The first amino acid with the abbreviation 'N' in the protein. Show Answer Correct Answer: A) The end of a protein with a free amine group. 48. Protein is a biologically functional molecule that consists of one or more polypeptides A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 49. All are proteins except- A) Receptors + Insulin. B) CoQ. C) Antibody + Trypsin. D) GLUT-4 + Collagen. Show Answer Correct Answer: B) CoQ. 50. The chemical reaction that breaks down a molecule by adding water is A) Hydrolysis. B) Dehydration. C) Hydrophobia. D) Dehydration Synthesis. Show Answer Correct Answer: A) Hydrolysis. 51. What are the monomers of nucleic acids called? A) Monosaccharides. B) Amino Acids. C) Nucleotides. D) Fatty Acids & Glycerol. Show Answer Correct Answer: C) Nucleotides. 52. Which of the following set consists of only essential amino acid? A) Leucine, phenyl alanine, tryptophan. B) Alanine, glutamine, lysine. C) Leucine, proline proline, glycine. D) Alanine, tyrosine, cysteine. Show Answer Correct Answer: A) Leucine, phenyl alanine, tryptophan. 53. Two components of starch are A) Amylase, amylose. B) Amylose, amylopectin. C) Amylase, amylopectin. D) Glucose. Show Answer Correct Answer: B) Amylose, amylopectin. 54. Which organ in the digestive system is responsible for most of the nutrient absortion in the digestive system? A) Esophagus. B) Large intestine. C) Small intestine. D) Stomach. Show Answer Correct Answer: C) Small intestine. 55. What are the four major macromolecules? A) Carbohydrates, proteins, lipids, and water. B) Carbohydrates, proteins, water, and alkaines. C) Carbohydrates, proteins, lipids, and nucleic acids. D) Carbohydrates, proteins, lipids, and amini acids. Show Answer Correct Answer: C) Carbohydrates, proteins, lipids, and nucleic acids. 56. Which of the following does not correctly match the biomolecule with its monomer (building block)? A) Nucleic acid:is made up of nucleotides. B) Nucleic acid:is made up of amino acids. C) Carbohydrate:is made up of monosaccharides. D) Protein:is made up of amino acids. Show Answer Correct Answer: B) Nucleic acid:is made up of amino acids. 57. Which biomolecule is made of nucleotides and contain you DNA & RNA? A) Lipids. B) Nucleic Acid. C) Protein. D) Carbohydrate. Show Answer Correct Answer: B) Nucleic Acid. 58. Which one is NOT a lipid? A) Nitrogen. B) Butter. C) Olive oil. D) Fat. Show Answer Correct Answer: A) Nitrogen. 59. ..... requires water as a reactant. A) Dehydration Synthesis. B) Hydrolysis. C) All the above. D) None of the above. Show Answer Correct Answer: B) Hydrolysis. 60. NUCLEOTIDES ARE THE BUILDING BLOCKS OF ..... A) CARBOHYDRATES. B) LIPIDS. C) PROTEINS. D) NUCLEIC ACIDS. Show Answer Correct Answer: D) NUCLEIC ACIDS. ← 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books