This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 9 Biomolecules – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 9 Biomolecules Quiz 17 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which biomolecule includes sugars and starches? A) Lipids. B) Proteins. C) Carbohydrates. D) Nucleic Acid. Show Answer Correct Answer: C) Carbohydrates. 2. One of amino acids A) Ribose. B) Adenosine. C) Sucrose. D) Methionine. Show Answer Correct Answer: D) Methionine. 3. Fatty acids and glycerol form the polymer ..... A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic acids. Show Answer Correct Answer: B) Lipids. 4. Which of the following are considered the building blocks of proteins? A) Amino acids. B) Nucleotides. C) Monosaccharides. D) Fatty acids. Show Answer Correct Answer: A) Amino acids. 5. Which best describes the role of hemoglobin in red blood cells? A) It hydrates human body tissues. B) It supplies support to human body tissues. C) It transports oxygen to human body tissues. D) It increases the rate of reactions in body tissues. Show Answer Correct Answer: C) It transports oxygen to human body tissues. 6. DNA is composed of which type of biomolecule? A) Nucleic acids. B) Carbohydrates. C) Proteins. D) Lipids. Show Answer Correct Answer: A) Nucleic acids. 7. Protein functions include structural support, storage, transport, cellular communications, movement, and defense against foreign substances A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 8. Enzymes are which type of biomolecule? A) Carbohydrate. B) Lipid. C) Protein. D) Nucleic Acid. Show Answer Correct Answer: C) Protein. 9. What is the key role (function) of a protein? A) Instant energy for the cell/body. B) Hormones, buoyancy, forms cell membranes, insulation, energy storage. C) Growth, repair, and energy, immune system, enzymes. D) Store and transmit genetic information/heredity. Show Answer Correct Answer: C) Growth, repair, and energy, immune system, enzymes. 10. The process by which a DNA molecule is copied is called ..... A) Binary fission. B) Mitosis. C) Replication. D) Translation. Show Answer Correct Answer: C) Replication. 11. Which biomolecule produces sugars and starches? A) Lipids. B) Proteins. C) Carbohydrates. D) Nucleic Acid. Show Answer Correct Answer: C) Carbohydrates. 12. I am helpful for long term energy storage A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: B) Lipids. 13. Which of the following biomolecules doesn't contain C, H and O? A) Protein. B) Lipids. C) Carbohydrates. D) DNA. E) None of the above. All of the biomolecules contain C, H, and O. Show Answer Correct Answer: E) None of the above. All of the biomolecules contain C, H, and O. 14. Which biomolecule is known as the body's main source of energy? A) Lipids. B) Proteins. C) Nucleic Acids. D) Carbohydrates. Show Answer Correct Answer: D) Carbohydrates. 15. What type of biomolecule are enzymes, which catalyze biochemical reactions in the body? A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: C) Proteins. 16. What is starch? A) A monomer for lipids. B) A polymer for lipids. C) A monomer for carbohydrates. D) A polymer for carbohydrates. Show Answer Correct Answer: D) A polymer for carbohydrates. 17. Which elements are found in all four biomolecules? A) Carbon, hydrogen, oxygen. B) Carbon, hydrogen, oxygen, nitrogen. C) Carbon, hydrogen, oxygen, nitrogen, phosphorus. D) Carbon, nitrogen, phosphorus. Show Answer Correct Answer: A) Carbon, hydrogen, oxygen. 18. What type of relationship is it when ants live on an acacia tree and protect it from insects? The acacia tree provides food for the ants. A) Commensalism. B) Mutualism. C) Parasitism. D) Predation. Show Answer Correct Answer: B) Mutualism. 19. ..... is the main substrate for ATP synthesis. A) Galactose. B) Lactose. C) Fructose. D) Glucose. Show Answer Correct Answer: D) Glucose. 20. What are the largest carbohydrates called? A) Monosaccarides. B) Oligosaccarides. C) Disaccarides. D) Polysaccarides. Show Answer Correct Answer: D) Polysaccarides. 21. Which of the following is a mnemonic to remember the 4 biomolecules? A) Cats Make Purple Noise. B) CHO CHO CHON CHONP. C) Cats Love Playing Night Activities. D) Cats Like Maroon Noodles. Show Answer Correct Answer: C) Cats Love Playing Night Activities. 22. What portion of the lipid is made of glycerol? A) The cap. B) The tails. C) Lipids do not have glycerol. D) The entire structure. Show Answer Correct Answer: A) The cap. 23. What do enzymes do? A) They slow down chemical reactions to break down food. B) They speed up chemical reactions to break down food. C) They stop chemical reactions from breaking down food. D) They have no effect on chemical reactions. Show Answer Correct Answer: B) They speed up chemical reactions to break down food. 24. Which macromolecule is the body's preferred energy source? A) Nucleic acid. B) Lipids. C) Proteins. D) Carbohydrate. Show Answer Correct Answer: D) Carbohydrate. 25. Which of the following is not true about amino acids? A) They are constituents of all proteins. B) Alanine having one amino and one carboxylic group. C) Most naturally occurring amino acids have D-configuration. D) Glycine is the only naturally occuring amino acid which is optically inactive. Show Answer Correct Answer: C) Most naturally occurring amino acids have D-configuration. ← 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