This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 9 Biomolecules – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 9 Biomolecules Quiz 5 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. All organic compounds contain atoms of which element? A) Sulphur. B) Phosphorous. C) Carbon. D) Iron. Show Answer Correct Answer: C) Carbon. 2. Which sugar is present in RNA? A) Deoxyribose. B) Ribose. C) Glucose. D) Galactose. Show Answer Correct Answer: B) Ribose. 3. Which of the following can be compared to a battery in need of recharging? A) ADP. B) ATP. C) Ribose. D) Adenosine. Show Answer Correct Answer: A) ADP. 4. What is the primary function of enzymes in biological reactions? A) Provide structural support. B) Store genetic information. C) Speed up chemical reactions. D) Transport oxygen. Show Answer Correct Answer: C) Speed up chemical reactions. 5. Which biomolecule is involved in the storage and transmission of genetic information? A) DNA. B) Carbohydrate. C) Protein. D) RNA. Show Answer Correct Answer: A) DNA. 6. A substance that speeds up a chemical reaction without being consumed or changed in the process A) Activation energy. B) Catalyst. C) Specificity. D) None of the above. Show Answer Correct Answer: B) Catalyst. 7. All amino acids must have these EXCEPT A) Carboxylic. B) Aldehyde. C) Amine. D) Hydrogen. Show Answer Correct Answer: B) Aldehyde. 8. The following information are most likely found in nutrition facts except: A) Calories per serving. B) Population group of consumer. C) Percent saturated fat. D) Serving size. Show Answer Correct Answer: B) Population group of consumer. 9. Which biomolecule contracts, transports and makes up internal cell structures A) Carbohydrate. B) Protein. C) Lipid. D) Nucleic acid. Show Answer Correct Answer: B) Protein. 10. Which of the following is not a polysaccharide? A) Chitin. B) Pectin. C) Cellulose. D) None. Show Answer Correct Answer: D) None. 11. What is the primary function of carbohydrates in cells? A) Major energy source. B) Long-term energy storage. C) Coding for traits. D) Structural support in cell membranes. Show Answer Correct Answer: A) Major energy source. 12. Which examples are a sources of energy? A) Starch, cellulose, glycogen. B) Valine, Histidine, Cysteine. C) DNA, RNA. D) Unsaturated and Saturated Fats. Show Answer Correct Answer: A) Starch, cellulose, glycogen. 13. ..... builds polymer. A) Hydrolysis. B) Dehydration Synthesis. C) All the above. D) None of the above. Show Answer Correct Answer: B) Dehydration Synthesis. 14. Which biomolecule is the main source of energy for all living things? A) Proteins. B) Nucleic acids. C) Lipids. D) Carbohydrates. Show Answer Correct Answer: D) Carbohydrates. 15. If you want a reaction to speed up you need an ..... A) Nucleic acid. B) Enzyme. C) Nerve cell. D) Carbohydrate. Show Answer Correct Answer: B) Enzyme. 16. Which other biomolecule provides structural support to cells? A) Carbohydrates. B) Nucleic Acids. C) Lipids. D) None of the above. Show Answer Correct Answer: A) Carbohydrates. 17. Nucleotides of DNA have ..... sugar. A) Ribose. B) Glucose. C) Deoxyribose. D) Fructose. Show Answer Correct Answer: C) Deoxyribose. 18. Enzyme is a/an ..... A) Carbohydrate. B) Lipid. C) Protein. D) Nucleic acid. Show Answer Correct Answer: C) Protein. 19. The suffix "saccharide" means ..... A) Sugar. B) Protein. C) Lipid. D) Phospholipid. Show Answer Correct Answer: A) Sugar. 20. Identify the key role of nucleic acids: A) Instant energy. B) Hormone, buoyancy, forms cell membranes, insulation, energy storage. C) Transport hemoglobin, immunity, chemical reactions, regulate proteins, tissue structure. D) Store and transmit heredity, genetic information. Show Answer Correct Answer: D) Store and transmit heredity, genetic information. 21. Which of the following statements best describes a DNA molecule? A) It is a double helix. B) It contains the sugar ribose. C) It is composed of amino acids. D) It contains the nitrogenous base uracil. Show Answer Correct Answer: A) It is a double helix. 22. Which of the following levels of protein structure is often stabilized by S-S bonds? A) Primary structure. B) Secondary structure. C) Tertiary structure. D) Quaternary structure. E) Both tertiary and quaternary structures. Show Answer Correct Answer: E) Both tertiary and quaternary structures. 23. Your friend is really irritable while sitting in class. He feels lightheaded and dizzy. He is also feeling a bit of confusion and brain fog.What inferences are most realistic to make about the biomolecules in your friend's body? A) He is running low on fast sources of energy. B) Proteins are being broken down or reshaped. C) The coding information in the cell is incorrect or incomplete. D) There is not enough insulation or energy storage. Show Answer Correct Answer: A) He is running low on fast sources of energy. 24. Which biomolecule are in starches and fibers? A) Lipid. B) Protein. C) Nucleic Acid. D) Carbohydrate. Show Answer Correct Answer: D) Carbohydrate. 25. Which of the following are biomolecules? A) RNA, DNA, proteins, lipids. B) Proteins, lipids, carbohydrates, polymers. C) Nucleic acid, lipids, carbohydrates, monomers. D) Proteins, lipids, carbohydrates, nucleic acids. Show Answer Correct Answer: D) Proteins, lipids, carbohydrates, nucleic acids. ← 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 6Class 11 Biology Chapter 9 Biomolecules Quiz 7Class 11 Biology Chapter 9 Biomolecules Quiz 8Class 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