This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 9 Biomolecules – Quiz 18 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 9 Biomolecules Quiz 18 (40 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which is a function of lipids? A) To supply cells with quick-release energy. B) To provide the body with insulation. C) To store genetic information. D) To regulate cell processes. Show Answer Correct Answer: B) To provide the body with insulation. 2. The monomer for proteins is? A) Nucleotides. B) Monosaccharides. C) Triglycerides. D) Amino acids. Show Answer Correct Answer: D) Amino acids. 3. The Sudan IV Test will test for the presence of ..... A) Lipids. B) Starch. C) Simple Sugars. D) Protein. Show Answer Correct Answer: A) Lipids. 4. Which biomolecules does a slice of pepperoni pizza have? A) Carbohydrates. B) Carbohydrates and Lipids. C) Protein and Carbohydrates. D) Carbohydrates, Lipids, Protein, and Nucleic Acids. Show Answer Correct Answer: D) Carbohydrates, Lipids, Protein, and Nucleic Acids. 5. Water LOVING molecules that form hydrogen bonds with water and dissolve in water. A) Monomers. B) Hydrophobic. C) Hydrophilic. D) Polymers. Show Answer Correct Answer: C) Hydrophilic. 6. What is the basic structure of carbohydrates? A) Carbon, hydrogen, and nitrogen atoms. B) Carbon, hydrogen, and sulfur atoms. C) Carbon, hydrogen, and oxygen atoms. D) Carbon and oxygen atoms. Show Answer Correct Answer: C) Carbon, hydrogen, and oxygen atoms. 7. What does the element S stand for? A) Strontium. B) Sulfer. C) Antimony. D) Tin. Show Answer Correct Answer: B) Sulfer. 8. Which statement describes the major role of lipids wihtin the cell? A) They cause DNA to replicate. B) They are the main structural components of membranes. C) They move RNA in the cytoplasm. D) They catalyze chemical reactions in the cell cytoplasm. Show Answer Correct Answer: B) They are the main structural components of membranes. 9. Carbohydrates are water-soluble. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 10. Which elements are found in nucleic acids? A) C, H, O, N, P. B) C, H, O, N. C) C, H, O. D) None of the above. Show Answer Correct Answer: A) C, H, O, N, P. 11. Carbohydrates are classified on the basis of their behaviour on hydrolysis and also as reducing or non-reducing sugar. Sucrose is a ..... A) Polysaccharide. B) Monosaccharide. C) Non-reducing sugar. D) Reducing sugar. Show Answer Correct Answer: C) Non-reducing sugar. 12. Substrates bind to enzymes at the ..... A) Polymer. B) Denature site. C) Active site. D) Complex. Show Answer Correct Answer: C) Active site. 13. A biomolecule compose of carbon, hydrogen, oxygen and nitrogen A) Protein. B) Carbohydrate. C) Lipid. D) Nucleic acid. Show Answer Correct Answer: A) Protein. 14. The chemical reaction that breaks down a polymer by adding water is A) Dehydration Synthesis. B) Hydrophobia. C) Hydrolysis. D) Dehydration. Show Answer Correct Answer: C) Hydrolysis. 15. I contain elements C, H, and O and have a ring-like structure A) Lipids. B) Nucleic Acids. C) Carbohydrates. D) Proteins. Show Answer Correct Answer: C) Carbohydrates. 16. Provides genetic information A) Carbohydrates. B) Nucleic acids. C) Lipids. D) Proteins. Show Answer Correct Answer: B) Nucleic acids. 17. Which biomolecule is correctly paired with one of its functions? A) Carbohydrates:Store genetic information. B) Proteins:Provide structure in skin, hair, nails. C) Lipids:Give quick energy to cells. D) Nucleic Acids:serves as insulation for animals. Show Answer Correct Answer: B) Proteins:Provide structure in skin, hair, nails. 18. ..... is defined as a single unit. A) Monomer. B) Polymer. C) Oxygen. D) Carbon. Show Answer Correct Answer: A) Monomer. 19. What are the 4 bases that can be found in a nucleotide in DNA? A) U, T, G, C. B) A, T, G, C. C) A, U, G, C. D) A, T, U, G. Show Answer Correct Answer: B) A, T, G, C. 20. Which molecules belongs to macromolecule protein? A) Enzymes, insulin, hemoglobin. B) DNA, RNA, nucleotides. C) Cellulose, glycogen, starch. D) Fatty acids, glycerol, cholesterol. Show Answer Correct Answer: A) Enzymes, insulin, hemoglobin. 21. What is the major function of carbohydrates? A) Cell membrane structure. B) Energy storage. C) Muscle tissue formation. D) Cell signaling. Show Answer Correct Answer: B) Energy storage. 22. Which of the following is an essential amino acid? A) Serine. B) Valine. C) Glycine. D) Alanine. Show Answer Correct Answer: B) Valine. 23. The general structure for a lipid can be described by which letter? A) F. B) D. C) C. D) E. Show Answer Correct Answer: D) E. 24. Which of the following is a carbohydrate? A) DNA. B) Sugars. C) Protein. D) Fats. Show Answer Correct Answer: B) Sugars. 25. Vitamin A is ..... A) Calciferol. B) Ascorbic acid. C) Thiamine. D) Retinol. Show Answer Correct Answer: D) Retinol. 26. The word "saccharide" means:(a) A) A. sugar. B) Protein. C) Amino acids. D) None of the above. Show Answer Correct Answer: A) A. sugar. 27. Enzyme fall under the which category of biomolecules? A) Nucleic Acid. B) Protein. C) Lipid. D) Carbohydrate. Show Answer Correct Answer: B) Protein. 28. Which contains carbon, hydrogen, oxygen (CHO) in a 1:2:1 ratio and may have a ring-like structure? A) Proteins. B) Nucleic acid. C) Carbohydrates. D) Lipids. Show Answer Correct Answer: C) Carbohydrates. 29. Which foods are NOT rich in lipids? (a) A) Fats. B) Oils. C) Butter. D) A. Pasta. Show Answer Correct Answer: D) A. Pasta. 30. A substrate will bind to an enzyme at the ..... A) The dip. B) Active site. C) Key hole. D) Binding site. Show Answer Correct Answer: B) Active site. 31. Which are examples of lipids? A) Meats, enzyme, lactase, eggs. B) Fats, oils, waxes. C) Glucose, pasta, bread. D) DNA, RNA. Show Answer Correct Answer: B) Fats, oils, waxes. 32. The process of copying a single strand of DNA to create two new strands is called ..... A) Replication. B) Translating. C) Xeroxing. D) Protein synthesis. Show Answer Correct Answer: A) Replication. 33. Which biomolecule is involved in protecting the body? A) Proteins. B) Nucleic Acids. C) Lipids. D) Carbohydrates. Show Answer Correct Answer: A) Proteins. 34. Oils and fats are examples of ..... A) Nucleic acids. B) Fats. C) Glucose. D) Proteins. Show Answer Correct Answer: B) Fats. 35. What is the function of RNA and DNA? A) Storing sugars. B) Storing energy. C) Storing cells. D) Storing genetic material. Show Answer Correct Answer: D) Storing genetic material. 36. Fats and oils are composed of what two groups of molecules? A) Glucose and fructose. B) Starch and sugar. C) Water and cellulose. D) Fatty acids and glycerol. Show Answer Correct Answer: D) Fatty acids and glycerol. 37. What is a type of nucleic acid that is found in ALL cells? A) Nucleotides. B) Amino acids. C) DNA. D) None of the above. Show Answer Correct Answer: C) DNA. 38. A ..... is the reactant on which an enzyme works. A) Substrate. B) Enzyme-Substrate Complex. C) Enzyme. D) Products. Show Answer Correct Answer: A) Substrate. 39. Which biomolecule is responsible for long term energy and storage? A) Carbohydrate. B) Protein. C) Nucleic Acid. D) Lipid. Show Answer Correct Answer: D) Lipid. 40. Sucrase, an enzyme, is added to a solution containing water and sucrose. Which experimental factor would have the least impact on the rate of the reaction? A) Temperature. B) Light. C) Substrate concentration. D) Enzyme concentration. Show Answer Correct Answer: B) Light. ← PreviousRelated 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