This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 9 Biomolecules – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 9 Biomolecules Quiz 8 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Enzymes function by A) Increasing activation energy. B) Having a specific shape that allows it to bond with specific reactants (like a lock and key). C) Greatly decreasing reaction rates. D) Acting as a catalyst for many different reactions. Show Answer Correct Answer: B) Having a specific shape that allows it to bond with specific reactants (like a lock and key). 2. Which of the following is a term that refers to an energy source obtained from plants? A) Cellulose. B) Glycogen. C) Lipids. D) Starch. Show Answer Correct Answer: D) Starch. 3. Fats are specialized lipid molecules, and enzymes are specialized protein molecules. How do the functions of fats and enzymes differ? A) Fats are structural building materials, while enzymes are transportation molecules. B) Fats provide support for cells, while enzymes lower the pH of gastric fluids. C) Fats regulate body functions, while enzymes denature invasive bacteria. D) Fats are storage molecules, while enzymes are catalytic molecules. Show Answer Correct Answer: D) Fats are storage molecules, while enzymes are catalytic molecules. 4. What does poly-mean? A) One. B) None. C) Many. D) Sugar. Show Answer Correct Answer: C) Many. 5. Which type of biomolecule is most likely to be used as a quick source of energy during physical activity? A) Proteins. B) Lipids. C) Carbohydrates. D) Nucleic Acids. Show Answer Correct Answer: C) Carbohydrates. 6. Monomer:monosaccharide (sugar) A) Carbohydrate. B) Lipid. C) Protein. D) Nucleic Acid. Show Answer Correct Answer: A) Carbohydrate. 7. What is a substance called if it speeds up a chemical reaction? A) Reusable. B) Catalyst. C) Specific. D) Fragile. Show Answer Correct Answer: B) Catalyst. 8. Storing and transmitting genetic material is the function of which biomolecule? A) Nucleic acids. B) Protiens. C) Lipids. D) Carbohydrates. Show Answer Correct Answer: A) Nucleic acids. 9. The four most common elements found in biomolecules are ..... A) Sulfur, Phosphorus, Carbon, Oxygen. B) Carbon, Oxygen, Nitrogen, Hydrogen. C) Sulfur, Nitrogen, Carbon, Iron. D) Carbon, Nitrogen, Hydrogen, Sulfur. Show Answer Correct Answer: B) Carbon, Oxygen, Nitrogen, Hydrogen. 10. Triglycerides are: A) A class of proteins. B) A class of lipids. C) A specific type of carbohydrate. D) None of the above. Show Answer Correct Answer: B) A class of lipids. 11. CHON A) Carbohydrate. B) Lipid. C) Protein. D) Nucleic acid. Show Answer Correct Answer: C) Protein. 12. Oils are which type of biomolecule? A) Carbohydrates. B) Lipids. C) Nucleic acids. D) Proteins. Show Answer Correct Answer: B) Lipids. 13. ..... Breaks down polymers A) Dehydration Synthesis. B) Hydrolysis. C) All the above. D) None of the above. Show Answer Correct Answer: B) Hydrolysis. 14. Adenine bonds with ..... A) Guanine. B) Thymine. C) Cytosine. D) Adenine. Show Answer Correct Answer: B) Thymine. 15. Which type of macromolecule has the monomer nucleotide? A) Carbohydrate. B) Lipid. C) Protein. D) Nucleic Acid. Show Answer Correct Answer: D) Nucleic Acid. 16. What are nucleic acids? A) Fats. B) Sugar. C) Protein. D) DNA. Show Answer Correct Answer: D) DNA. 17. Glucose forms cyanohydrin with HCN indicate A) Presence of OH group. B) Presence of carbonyl group. C) Absence of carbonyl group. D) Absence of OH group. Show Answer Correct Answer: B) Presence of carbonyl group. 18. What is a function of carbohydrates? A) To provide energy to living organisms. B) The provide the structure in muscles. C) Providing insulation. D) Storing your genetic information. Show Answer Correct Answer: A) To provide energy to living organisms. 19. 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. 20. Which biomolecule is useful for insulation and energy storage in the human body? A) Carbohydrates. B) Lipids. C) Nucleic Acids. D) Proteins. Show Answer Correct Answer: B) Lipids. 21. DNA and RNA are polymers that belong to A) Lipids. B) Proteins. C) Carbohydrates. D) Nucleic acids. Show Answer Correct Answer: D) Nucleic acids. 22. What are special types of proteins that act as catalysts? A) Enzymes. B) Lipids. C) Polysaccharides. D) DNA. Show Answer Correct Answer: A) Enzymes. 23. Which of the following is NOT a class of biomolecules mentioned? A) Carbohydrates. B) Lipids. C) Vitamins. D) Proteins. Show Answer Correct Answer: C) Vitamins. 24. Which type of biomolecule is most involved in catalyzing biochemical reactions? A) Lipids. B) Proteins. C) Nucleic Acids. D) Carbohydrates. Show Answer Correct Answer: B) Proteins. 25. 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. ← PreviousNext →Related 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 9Class 11 Biology Chapter 9 Biomolecules Quiz 10Class 11 Biology Chapter 9 Biomolecules Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books