This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 9 Biomolecules – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 9 Biomolecules Quiz 3 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is a complex polysaccharide? A) Starch. B) Glucose. C) Glycerol. D) Phosphate. Show Answer Correct Answer: A) Starch. 2. Which of the following reactions of glucose can be explained only by its cyclicstructure? A) Glucose forms gluconic acid. B) Glucose forms pentaacetate. C) Glucose reacts with hydroxylamine. D) Pentaacetate of glucose does not react with hydroxylamine. Show Answer Correct Answer: D) Pentaacetate of glucose does not react with hydroxylamine. 3. What is a biomolecule? A) The dissolved particle in a solution. B) One of the by-products of respiration. C) Large organic molecules that are present in living organisms. D) None of the above. Show Answer Correct Answer: C) Large organic molecules that are present in living organisms. 4. A plant wilting is an example of- A) An internal stimulus. B) An external stimulus. C) Plant death. D) A response to maintain homeostasis. Show Answer Correct Answer: A) An internal stimulus. 5. Which of the following biomolecules is primarily responsible for catalyzing biochemical reactions in the body? A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: C) Proteins. 6. When looking at the cell membrane, where are the lipid tails located? A) Inner part of the bilayer. B) Outer part of the bilayer. C) At the end of the bilayer. D) Goes through each end of the bilayer. Show Answer Correct Answer: A) Inner part of the bilayer. 7. Many people are lactose intolerant and cannot digest dairy products. What enzyme are their bodies most likely lacking? A) Lipase. B) Lactase. C) Maltase. D) Protease. Show Answer Correct Answer: B) Lactase. 8. This biomolecule stores the genetic information of a living thing. A) Carbohydrates. B) Lipids. C) Nucleic Acid. D) Protein. Show Answer Correct Answer: C) Nucleic Acid. 9. What does organic mean (in science)? A) It costs more at the grocery store. B) It contains carbon. C) It is made of many individual parts. D) It produces energy. Show Answer Correct Answer: B) It contains carbon. 10. Which of the following proteins is fibrous in nature? A) Hemoglobin. B) Insulin. C) Keratin. D) Myoglobin. Show Answer Correct Answer: C) Keratin. 11. Monomer:nucleotide A) Carbohydrate. B) Lipid. C) Protein. D) Nucleic Acid. Show Answer Correct Answer: D) Nucleic Acid. 12. What is the function of an enzyme? A) Enzymes break themselves into small pieces. B) Enzymes slow down chemical reactions. C) Enzymes speed up chemical reactions. D) Enzymes combine products to form reactants. Show Answer Correct Answer: C) Enzymes speed up chemical reactions. 13. Which biomolecule includes Enzymes that control chemical reactions and gates that control what enters or leaves a cell? A) Carbohydrates. B) Lipids. C) Proteins. D) None of the above. Show Answer Correct Answer: C) Proteins. 14. What is the monomer of a protein A) Nucleotides. B) Fatty acids. C) Monosaccharides. D) Amino acids. Show Answer Correct Answer: D) Amino acids. 15. All of the following can cause an enzyme to work less effectively EXCEPT- A) Concetration (amount of) substrate. B) Temperature. C) PH. D) Perfect Conditions. Show Answer Correct Answer: D) Perfect Conditions. 16. Carbohydrates are A) Chains of amino acids. B) A secondary source of energy. C) The primary source of energy. D) Nucleic acids. Show Answer Correct Answer: C) The primary source of energy. 17. The letter 'D' in carbohydrates signifies A) Dextrorotatory. B) Configuration. C) Diamagnetic nature. D) Mode of synthesis. Show Answer Correct Answer: B) Configuration. 18. DNA instructions are transcribed into ..... A) TRNA. B) RRNA. C) MRNA. D) LRNA. Show Answer Correct Answer: C) MRNA. 19. Polymers can be broken down into other polymers / monomers. A) Other polymers. B) Monomers. C) All the above. D) None of the above. Show Answer Correct Answer: B) Monomers. 20. What type of biomolecule are enzymes primarily composed of? A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic acids. Show Answer Correct Answer: C) Proteins. 21. The part of the enzyme that the substrate bonds to is called the ..... A) Active site. B) Activation energy. C) Bond site. D) Dehydration synthesis. Show Answer Correct Answer: A) Active site. 22. It is also known as table sugar. A) Maltose. B) Sucrose. C) Galactose. D) Lactose. Show Answer Correct Answer: B) Sucrose. 23. Which of the following is a term that refers to the building blocks of all cells? A) Macromolecules. B) Micromolecules. C) Molecules. D) DNA. Show Answer Correct Answer: A) Macromolecules. 24. Genes code for which biomolecule? A) Nucleic Acids. B) Protein. C) Carbohydrates. D) Lipids. Show Answer Correct Answer: B) Protein. 25. ..... are useful for a fast source of energy. A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic acids. Show Answer Correct Answer: A) Carbohydrates. ← PreviousNext →Related QuizzesClass 11 Biology Chapter 9 Biomolecules Quiz 1Class 11 Biology Chapter 9 Biomolecules Quiz 2Class 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 10Class 11 Biology Chapter 9 Biomolecules Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books