This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 9 Biomolecules – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 9 Biomolecules Quiz 7 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. This biomolecule forms body structures, muscle, bones, skin, hair etc. A) Nucleic Acid. B) Lipid. C) Protein. D) Carbohydrate. Show Answer Correct Answer: C) Protein. 2. The monomers used to synthesize proteins are called ..... A) Fatty Acids. B) Nucleotides. C) Sugars. D) Amino Acids. Show Answer Correct Answer: D) Amino Acids. 3. These building blocks consist of a sugar, phosphate, and nitrogen base. A) Gene. B) Nucleotide. C) Ribose. D) Protein. Show Answer Correct Answer: B) Nucleotide. 4. What are two factors that can affect an enzymes ability to function? A) No changing. B) Temperature and pH. C) Night and day. D) Hot and cold. Show Answer Correct Answer: B) Temperature and pH. 5. All enzymes are examples of organic molecules known as A) Nucleic acids. B) Proteins. C) Carbohydrates. D) Lipids. Show Answer Correct Answer: B) Proteins. 6. (question 12) What is the monomer of nucleic acids? A) Nucleotides. B) Amino Acids. C) Glycerol. D) Monosaccharides. Show Answer Correct Answer: A) Nucleotides. 7. If we think of DNA as a ladder, which parts are the steps of the ladder? A) The phosphate-sugar backbone. B) The nitrogenous base pairs. C) The genes. D) The phospholipid bilayer. Show Answer Correct Answer: B) The nitrogenous base pairs. 8. Which is NOT a function of Protiens? A) Short term energy. B) Chemical reactions of enzymes. C) Cell signaling. D) Immune responce. Show Answer Correct Answer: A) Short term energy. 9. How do enzymes control chemical reactions in the body? A) Enzymes slow down chemical reactions. B) Enzymes speed up chemical reactions. C) Enzymes increase the activation energy of a reaction. D) Enzymes inhibit the catalysts of a reaction. Show Answer Correct Answer: B) Enzymes speed up chemical reactions. 10. Vegetable oils, such as corn oil, belong to which general class of organic substances? A) Proteins. B) Carbohydrates. C) Lipids. D) Salts. Show Answer Correct Answer: C) Lipids. 11. The substrate is Sucrose (carbohydrate), what is the enzyme? A) Sucrase. B) Lactase. C) Lactose. D) Sucrose. Show Answer Correct Answer: A) Sucrase. 12. Which of the following is the monomer of nucleic acids? A) Glucose. B) Nucleotide. C) Amino acids. D) Fats. Show Answer Correct Answer: B) Nucleotide. 13. The Iodine Test will test for the presence of ..... A) Simple Sugars. B) Protein. C) Starch. D) Lipids. Show Answer Correct Answer: C) Starch. 14. DNA and RNA belong to this biomolecule group. A) Proteins. B) Lipids. C) Nucleic acids. D) Carbohydrates. Show Answer Correct Answer: C) Nucleic acids. 15. The building blocks for Nucleic Acids (its monomer) are ..... : A) Triglycerides. B) Amino Acids. C) Monosaccharides. D) Nucleotides. Show Answer Correct Answer: D) Nucleotides. 16. Function:Quick Energy A) Protein. B) Lipid. C) Nucleic Acid. D) Carbohydrate. Show Answer Correct Answer: D) Carbohydrate. 17. This serves as the blueprint of life. A) Carbohydrates. B) Nucleic acids. C) Lipids. D) Proteins. Show Answer Correct Answer: B) Nucleic acids. 18. Which of the following elements is present in Nucleic acid but not in other biomolecules? A) Hydrogen. B) Nitrogen. C) Carbon. D) Phosphorus. Show Answer Correct Answer: D) Phosphorus. 19. Also called a polysaccharide A) Proteins. B) Carbohydrates. C) Nucleic acids. D) Lipids. Show Answer Correct Answer: B) Carbohydrates. 20. Which biomolecule helps to carry out chemical reactions (makes enzymes!) and helps transport molecules in the cell membrane? A) Carbohydrates. B) Lipids. C) Nucleic Acids. D) Proteins. Show Answer Correct Answer: D) Proteins. 21. Triglycerides are compounds created by combining a molecule of glycerol with three fatty acids. Triglycerides are used to store large amounts of energy and are classified as a form of which biomolecule? A) Lipids. B) Carbohydrates. C) Proteins. D) Nucleic acids. Show Answer Correct Answer: A) Lipids. 22. What three components make up a nucleotide? A) Sugar, phosphate, nitrogenous base. B) Phosphate, nitrogenous base, uracil. C) Sugar, phosphate, carboxyl. D) Uracil, carboxyl, phosphate. Show Answer Correct Answer: A) Sugar, phosphate, nitrogenous base. 23. One of amino acids A) Adenosine. B) Ribose. C) Methionine. D) Sucrose. Show Answer Correct Answer: C) Methionine. 24. Fatty acids and glycerol form the polymer ..... A) Nucleic acids. B) Lipids. C) Carbohydrates. D) Proteins. Show Answer Correct Answer: B) Lipids. 25. Which of the following are considered the building blocks of proteins? A) Fatty acids. B) Monosaccharides. C) Amino acids. D) Nucleotides. Show Answer Correct Answer: C) Amino acids. 26. Which best describes the role of hemoglobin in red blood cells? A) It supplies support to human body tissues. B) It transports oxygen to human body tissues. C) It hydrates human body tissues. D) It increases the rate of reactions in body tissues. Show Answer Correct Answer: B) It transports oxygen to human body tissues. 27. DNA is composed of which type of biomolecule? A) Nucleic acids. B) Lipids. C) Proteins. D) Carbohydrates. Show Answer Correct Answer: A) Nucleic acids. 28. 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. 29. 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. 30. The process by which a DNA molecule is copied is called ..... A) Binary fission. B) Replication. C) Translation. D) Mitosis. Show Answer Correct Answer: B) Replication. 31. Which biomolecule produces sugars and starches? A) Nucleic Acid. B) Lipids. C) Carbohydrates. D) Proteins. Show Answer Correct Answer: C) Carbohydrates. 32. I am helpful for long term energy storage A) Proteins. B) Lipids. C) Nucleic Acids. D) Carbohydrates. Show Answer Correct Answer: B) Lipids. 33. 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. 34. Which biomolecule is known as the body's main source of energy? A) Carbohydrates. B) Proteins. C) Nucleic Acids. D) Lipids. Show Answer Correct Answer: A) Carbohydrates. 35. What type of biomolecule are enzymes, which catalyze biochemical reactions in the body? A) Proteins. B) Lipids. C) Nucleic Acids. D) Carbohydrates. Show Answer Correct Answer: A) Proteins. 36. Which elements are found in all four biomolecules? A) Carbon, nitrogen, phosphorus. B) Carbon, hydrogen, oxygen. C) Carbon, hydrogen, oxygen, nitrogen. D) Carbon, hydrogen, oxygen, nitrogen, phosphorus. Show Answer Correct Answer: B) Carbon, hydrogen, oxygen. 37. 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) Parasitism. B) Commensalism. C) Mutualism. D) Predation. Show Answer Correct Answer: C) Mutualism. 38. ..... is the main substrate for ATP synthesis. A) Fructose. B) Glucose. C) Galactose. D) Lactose. Show Answer Correct Answer: B) Glucose. 39. What are the largest carbohydrates called? A) Oligosaccarides. B) Disaccarides. C) Polysaccarides. D) Monosaccarides. Show Answer Correct Answer: C) Polysaccarides. 40. Which of the following is a mnemonic to remember the 4 biomolecules? A) Cats Make Purple Noise. B) Cats Love Playing Night Activities. C) CHO CHO CHON CHONP. D) Cats Like Maroon Noodles. Show Answer Correct Answer: B) Cats Love Playing Night Activities. 41. What portion of the lipid is made of glycerol? A) The tails. B) The cap. C) Lipids do not have glycerol. D) The entire structure. Show Answer Correct Answer: B) The cap. 42. What do enzymes do? A) They have no effect on chemical reactions. B) They speed up chemical reactions to break down food. C) They slow down chemical reactions to break down food. D) They stop chemical reactions from breaking down food. Show Answer Correct Answer: B) They speed up chemical reactions to break down food. 43. Which macromolecule is the body's preferred energy source? A) Proteins. B) Lipids. C) Carbohydrate. D) Nucleic acid. Show Answer Correct Answer: C) Carbohydrate. 44. 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. 45. Emma, Abigail, and Kai are having a friendly competition while studying for their biology exam. They come across a tricky question about biomolecules and decide to challenge each other. Can you help them figure out which biomolecule is made up of amino acids? A) Proteins. B) Lipids. C) Nucleic acids. D) Carbohydrates. Show Answer Correct Answer: A) Proteins. 46. How many sugar-phosphate strands exist in each RNA molecule? A) 4. B) 2. C) 1. D) None. Show Answer Correct Answer: C) 1. 47. Biuret's solutions is used to test for A) Nucleic acids. B) Proteins. C) Lipids. D) Carbohydrates. Show Answer Correct Answer: B) Proteins. 48. Function:store genetic information A) Lipid. B) Carbohydrate. C) Nucleic Acid. D) Protein. Show Answer Correct Answer: C) Nucleic Acid. 49. The monomer Nucleotides make up the polymer ..... A) Nucleic Acids. B) Carbohydrates. C) Lipids. D) Proteins. Show Answer Correct Answer: A) Nucleic Acids. 50. What elements are common to all 4 biomolecules? A) Carbon, Hydrogen, Oxygen. B) Carbon, Nitrogen, Phosphorus. C) Carbon, Hydrogen, Phosphorus. D) Carbon, hydrogen, nitrogen. Show Answer Correct Answer: A) Carbon, Hydrogen, Oxygen. 51. In animal world the most abundant protein is ..... while in the whole biosphere the most abundant protein is ..... A) Collagen, RuBisCo. B) Antibody, Collagen. C) Collagen, Oxidase. D) RuBisCo, Collagen. Show Answer Correct Answer: A) Collagen, RuBisCo. 52. Which of the following biomolecules is correctly paired with its function? A) Nucleic acids-growth maintenance. B) Cell membrane-build muscle. C) Carbohydrates-long-term energy storage. D) Lipids-long-term energy storage. Show Answer Correct Answer: D) Lipids-long-term energy storage. 53. Which of the following is a primary function of carbohydrates in living organisms? A) Genetic information storage. B) Catalyzing biochemical reactions. C) Energy storage. D) Structural support in cell membranes. Show Answer Correct Answer: C) Energy storage. 54. A banana is an example of which biomolecule A) Protein. B) Lipid. C) Carbohydrate. D) Nucleic acid. Show Answer Correct Answer: C) Carbohydrate. 55. Which biomolecule is the main component of the cell membrane, providing structural integrity and fluidity? A) Carbohydrates. B) Nucleic Acids. C) Proteins. D) Lipids. Show Answer Correct Answer: D) Lipids. 56. Which biomolecule's monomer (or building block) is nucleotides? A) Carbohydrate. B) Lipids. C) Proteins. D) Nucleic Acid. Show Answer Correct Answer: D) Nucleic Acid. 57. The genetic material of an organism is composed of ..... A) Deoxyribonucleic acids. B) Complex carbohydrates. C) Lipids. D) Proteins. Show Answer Correct Answer: A) Deoxyribonucleic acids. 58. What is the function of a carbohydrate?(Why do I need this before a workout?) (a) A) Movement. B) Stores genetic information. C) A. Quick energy. D) Speeds up reactions. Show Answer Correct Answer: C) A. Quick energy. 59. There are only ..... different kinds of biomolecules that make up all living things, and it only takes ..... different kinds of atoms to create them. A) 8, 4. B) 4, 5. C) 6, 3. D) 6, 2. Show Answer Correct Answer: B) 4, 5. 60. Which of the following B group vitamin can be stored in our body A) Vitamin B$_{12}$. B) Vitamin B$_{1}$. C) Vitamin B$_{6}$. D) Vitamin B$_{2}$. Show Answer Correct Answer: A) Vitamin B$_{12}$. ← PreviousNext →Related 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 8Class 11 Biology Chapter 9 Biomolecules Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books