This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 9 Biomolecules – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 9 Biomolecules Quiz 11 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Proteins are found to have two different types of secondary structures viz. $\alpha$-helix and $\beta$-pIeated sheet structure, $\alpha$-helix structure of protein is stabilised by A) Peptide bonds. B) Van der Waals forces. C) Hydrogen bonds. D) Dipole-dipole interactions. Show Answer Correct Answer: C) Hydrogen bonds. 2. What term means: "many amino acids connected together" A) Polypeptide. B) Polysaccharide. C) Polyglyceride. D) Polycalorie. Show Answer Correct Answer: A) Polypeptide. 3. What is the role of nucleic acids in cells? A) Store energy. B) Catalyze reactions. C) Store and transmit genetic information. D) Provide structural support. Show Answer Correct Answer: C) Store and transmit genetic information. 4. Monomer:fatty acid + glycerol A) Carbohydrate. B) Lipid. C) Protein. D) Nucleic Acid. Show Answer Correct Answer: B) Lipid. 5. My cousin said that Gatorade is filled with protein, I don't believe him. Which test should I run to see if he is right or wrong? A) Biuret. B) Iodine. C) Sudan IV. D) Benedict. Show Answer Correct Answer: A) Biuret. 6. Smallest unit a biomolecule can be broken down into while still maintaining the properties. A) Monomer. B) Polymer. C) Hydrolysis. D) Atom. Show Answer Correct Answer: A) Monomer. 7. Carbohydrates are also known as A) Sugars. B) Fats. C) Acids. D) Bases. Show Answer Correct Answer: A) Sugars. 8. The conditions for an enzyme to work need to be ..... A) Specific. B) Normal. C) Variable. D) Don't matter. Show Answer Correct Answer: A) Specific. 9. Which biomolecule is properly matched to its monomer? A) Nucleic acid:amino acid. B) Polypeptide:1 glycerol + 3 fatty acids. C) Lipid:nucleotide. D) Carbohydrate:monosaccharide. Show Answer Correct Answer: D) Carbohydrate:monosaccharide. 10. An enzyme serves as a place where a chemical reaction can occur because- A) The enzyme is a substrate. B) The enzyme is one of the reactants in the reaction. C) The charge on the enzyme's active site is the same as the charge on the substrates. D) The shape of the substrates fits perfectly into the shape of the enzyme's active site. Show Answer Correct Answer: D) The shape of the substrates fits perfectly into the shape of the enzyme's active site. 11. Which statement about the enzymes is true? A) They act to speed up a biochemical reaction. B) They are made up of protein or RNA in some cases. C) They are sensitive to temperature and pH. D) All. Show Answer Correct Answer: D) All. 12. Which biomolecule is used to store and transport genetic information? A) Nucleic acid. B) Protein. C) Carbohydrates. D) Lipids. Show Answer Correct Answer: A) Nucleic acid. 13. (question 21) Which of the following is a simple sugar? A) Glucose. B) Flour. C) Seeds. D) Lactase. Show Answer Correct Answer: A) Glucose. 14. Which of the following biomolecules is most directly involved in the process of cellular respiration to provide energy for cells? A) Proteins. B) Carbohydrates. C) Lipids. D) Nucleic Acids. Show Answer Correct Answer: B) Carbohydrates. 15. Liam, Luna, and Ethan are having a debate. They are trying to figure out which biomolecule is composed of nucleotides. Can you help them settle this? A) Nucleic acids. B) Lipids. C) Carbohydrates. D) Proteins. Show Answer Correct Answer: A) Nucleic acids. 16. (T or F) Carbohydrates and Lipids both have carbon, hydrogen, and oxygen (CHO) as the elements that make them up A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 17. What does soluble mean? A) Can be dissolved in water. B) Can be eaten. C) Can make energy from the sun. D) Can not be dissolved in water. Show Answer Correct Answer: A) Can be dissolved in water. 18. Which word means "to speed up" ? A) Digestion. B) Synthesis. C) Catalyze. D) Dentaure. Show Answer Correct Answer: C) Catalyze. 19. (question 8) What are the four biological molecules? A) Proteins, carbohydrates, lipids, nucleic acids. B) Proteins, enzymes, cells, lipids. C) Water, air, earth, and fire. D) Carbon, oxygen, nitrogen, phosphorous. Show Answer Correct Answer: A) Proteins, carbohydrates, lipids, nucleic acids. 20. Which biomolecules provide quick energy for the cell and also provide materials to build the cell membrane/wall? A) Carbohydrates. B) Proteins. C) Lipids. D) Nucleic Acids. Show Answer Correct Answer: A) Carbohydrates. 21. Chemical reaction which REMOVES water from between two or more monomers in order to bond them together to make a polymer. A) Monomer. B) Dehydration synthesis. C) Hydrolysis. D) Polymer. Show Answer Correct Answer: B) Dehydration synthesis. 22. Chains of amino acids are A) Proteins. B) Nucleic acids. C) Carbohydrates. D) Lipids. Show Answer Correct Answer: A) Proteins. 23. (question 17) A monomer is ..... A) A single atom. B) A building block for polymers. C) A single element. D) Is an inorganic molecule. Show Answer Correct Answer: B) A building block for polymers. 24. Which of the following reactions forms peptide bonds? A) Hydration. B) Dehydration. C) Hydrogenation. D) None of these answers. Show Answer Correct Answer: B) Dehydration. 25. What is the key role (function) of carbohydrates? A) Energy storage. B) Immunity, muscles, structure for tissues, cell metabolism. C) Instant energy for cells and body functions. D) Genetic information (heredity). Show Answer Correct Answer: C) Instant energy for cells and body functions. ← 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