This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 9 Biomolecules – Quiz 23 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 9 Biomolecules Quiz 23 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When 2 amino acids undergo condensation, what bond is formed? A) Hydrogen bond. B) Peptide bond. C) Van der Waals. D) Hydrophobic interaction. Show Answer Correct Answer: B) Peptide bond. 2. What are carbohydrates? A) Fat. B) Sugar. C) Protein. D) DNA. Show Answer Correct Answer: B) Sugar. 3. Another word for lipid is ..... A) Sugar. B) Fiber. C) Fat. D) Calcium. Show Answer Correct Answer: C) Fat. 4. Monosaccharide are the building blocks of these biomolecules. A) CARBOHYDRATES. B) PROTEINS. C) LIPIDS (fats). D) NUCLEIC ACID. Show Answer Correct Answer: A) CARBOHYDRATES. 5. Which of the following are the main elements found in biomolecules? A) C, H, O, N, P, S. B) Ca, He, Os, Ni, Pt, Si. C) C, He, O, Mg, Pd, S. D) C, H, Os, Ma, Ni, Se. Show Answer Correct Answer: A) C, H, O, N, P, S. 6. The monomer of a carbohydrate is called ..... A) A monosaccharide. B) A fatty acid. C) An amino acid. D) A nucleotide. Show Answer Correct Answer: A) A monosaccharide. 7. An enzyme speeds up a chemical reaction in the cell but can only be used once. True or False? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 8. Amino acids can be classified by the- A) Number of peptide bonds. B) Number of disulfide bridges they can form. C) Number of carbon-carbon double. D) Characteristics of their side chains. Show Answer Correct Answer: D) Characteristics of their side chains. 9. Function:speed up chemical reactions A) Carbohydrate. B) Lipid. C) Protein. D) Nucleic Acid. Show Answer Correct Answer: C) Protein. 10. How how carbohydrates and lipids similar? A) Both contain C, H, O, N, P and store energy. B) Both contain C, H, O, N and give energy. C) Both contain C, H, O, N, S and store energy. D) Both contain C, H, O and give energy. Show Answer Correct Answer: D) Both contain C, H, O and give energy. 11. What are the monomers of a lipid? A) Fat cubes and glycogen. B) Glycerol and amino acids. C) Fatty acids and glycerol. D) Amino acids. Show Answer Correct Answer: C) Fatty acids and glycerol. 12. Which biomolecule can be identified using the Biuret test, which turns purple in its presence? A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: C) Proteins. 13. Which monomer belongs to the biomolecule that contains your genetic information? A) Monosaccharide. B) Fatty Acid. C) Amino Acid. D) Nucleotide. Show Answer Correct Answer: D) Nucleotide. 14. A substance that increases the rate of a chemical reaction without being changed itself A) Enzyme catalyst. B) Reactant. C) Product. D) Base. Show Answer Correct Answer: A) Enzyme catalyst. 15. K$_{m}$ is A) Product. B) Enzyme. C) Constant. D) Unit. Show Answer Correct Answer: C) Constant. 16. Why do people who have a fever usually feel they have no energy, or are really tired? A) Fever interferes with carbohydrate digestion. B) Enzymes that control energy reactions lose their shapes at high temperatures. C) Proteins lose fatty acid molecules at the end of the biomolecular chain. D) DNA gets twisted into a double helix at high temperatures. Show Answer Correct Answer: B) Enzymes that control energy reactions lose their shapes at high temperatures. 17. The monomer Amino acids make up the polymer ..... A) Proteins. B) Lipids. C) Nucleic Acids. D) Carbohydrates. Show Answer Correct Answer: A) Proteins. 18. What is the primary function of nucleic acids in living organisms? A) Store energy. B) Provide structural support. C) Store and transmit genetic information. D) Act as enzymes. Show Answer Correct Answer: C) Store and transmit genetic information. 19. What are foods that are high in carbohydrates? A) Eggs, fish, poultry. B) Cheese, meats, vegetables. C) Bread, potatoes, and pasta. D) Multitude of oils, butter and condiments. Show Answer Correct Answer: C) Bread, potatoes, and pasta. 20. Which of the following describes a protein? A) Fats. B) DNA and RNA. C) Polypeptide Chain. D) Sugars and Starches. Show Answer Correct Answer: C) Polypeptide Chain. 21. Which biomolecule functions include enzymes which speeds the rate of chemical reactions, structural components in cells, mechanical functions in muscles and cytoskeleton, cell signaling, and immune response; provides structure and helps with chemical reactions A) Protein. B) Lipids. C) Carbohydrate. D) Nucleic Acid. Show Answer Correct Answer: A) Protein. 22. Repeating units of monosaccharides make ..... ? A) Lipids. B) Proteins. C) Nucleic acids. D) Polysaccharides. Show Answer Correct Answer: D) Polysaccharides. 23. The monomer for carbohydrates is a? A) Monosaccharide. B) Triglyceride. C) Nucleotide. D) Amino acid. Show Answer Correct Answer: A) Monosaccharide. 24. What is the structure of DNA? A) DNA is a linear structure made up of amino acids. B) DNA is a triple helix structure made up of three strands of nucleotides. C) DNA is a single-stranded structure made up of nucleotides. D) DNA is a double helix structure made up of two strands of nucleotides that are connected by hydrogen bonds. Show Answer Correct Answer: D) DNA is a double helix structure made up of two strands of nucleotides that are connected by hydrogen bonds. 25. Monosaccharide A) Monomer. B) Polymer. C) All the above. D) None of the above. Show Answer Correct Answer: A) Monomer. ← 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 8Class 11 Biology Chapter 9 Biomolecules Quiz 9Class 11 Biology Chapter 9 Biomolecules Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books