This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 9 Biomolecules – Quiz 19 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 9 Biomolecules Quiz 19 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A monomer for carbohydrates is: A) Starch. B) Monosaccharide. C) Glycogen. D) Polysaccharide. Show Answer Correct Answer: B) Monosaccharide. 2. The anomeric carbon in D (+) glucose is A) C-1 carbon. B) C-2 carbon. C) C-5 carbon. D) C-6 carbon. Show Answer Correct Answer: A) C-1 carbon. 3. Which biomolecule provides quick energy and gives plants structure? A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: A) Carbohydrates. 4. What is an example of a protein? A) Butter. B) Pasta. C) Meat. D) Strawberries. Show Answer Correct Answer: C) Meat. 5. What is the basic formulae for starch? A) (C$_{6}$H$_{12}$O$_{6}$)$_{n}$. B) (C$_{6}$H$_{10}$O$_{5}$)$_{n}$. C) C$_{12}$O$_{12}$O$_{11}$. D) (C$_{6}$H$_{12}$O$_{4}$)$_{n}$. Show Answer Correct Answer: B) (C$_{6}$H$_{10}$O$_{5}$)$_{n}$. 6. What is the primary function of lipids in the body? A) Transport of oxygen, nutrients, and waste products. B) Regulation of body temperature. C) Source of energy, insulation, and protection. D) Building and repairing tissues. Show Answer Correct Answer: C) Source of energy, insulation, and protection. 7. (question 1) Enzymes are a type of which biomolecule? A) Carbohydrate. B) Lipid. C) Nucleic Acid. D) Protein. Show Answer Correct Answer: D) Protein. 8. Nucleic acids are the polymers of ..... A) Nucleosides. B) Nucleotides. C) Bases. D) Sugars. Show Answer Correct Answer: B) Nucleotides. 9. Assertion:Glucose exists in $\alpha$and $\beta$ forms which are called anomers.Reason:These anomers are enantiomers. A) Both A & R are correct and R is the correct explanation. B) Both A & R are correct but R is not the correct explanation. C) A is the correct statement but R is wrong. D) Both A & R are wrong. OR A is wrong & R is correct. Show Answer Correct Answer: C) A is the correct statement but R is wrong. 10. Nucleic acid A) Monomer. B) Polymer. C) All the above. D) None of the above. Show Answer Correct Answer: B) Polymer. 11. Assertion:Glucose on reacting with HCN forms cyanohydrin.Reason:This reaction indicates the presence of a carbonyl group is an aldehydicgroup. A) Both A & R are correct and R is the correct explanation. B) Both A & R are correct but R is not the correct explanation. C) A is the correct statement but R is wrong. D) Both A & R are wrong. OR A is wrong & R is correct. Show Answer Correct Answer: C) A is the correct statement but R is wrong. 12. Which biomolecule is primarily involved in the structure of cell membranes? A) Carbohydrates. B) Lipids. C) Nucleic acids. D) Proteins. Show Answer Correct Answer: B) Lipids. 13. Which element is not present in carbohydrates? A) Carbon. B) Hydrogen. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: C) Nitrogen. 14. Which of the following is a high protein food that vegans can eat? A) Salmon. B) Eggs. C) Strawberries. D) Soybeans. Show Answer Correct Answer: D) Soybeans. 15. What is the purpose of an enzyme? A) Give permission for the reaction. B) Raise activation energy. C) Speed up reactions. D) Control how many reactions occur. Show Answer Correct Answer: C) Speed up reactions. 16. Amino acids are the building blocks of these biomolecules. A) CARBOHDRATES. B) PROTEINS. C) LIPIDS (fats). D) NUCLEIC ACIDS. Show Answer Correct Answer: B) PROTEINS. 17. Which is the best way to rid of extra fat? A) Eat more fiber. B) Eat more calories than you burn. C) Eat a large lunch and just a small snack for dinner. D) Burn more calories than you eat. Show Answer Correct Answer: D) Burn more calories than you eat. 18. Adenine always bind with A) Guanine. B) Cytosine. C) Uracil. D) Thymine. Show Answer Correct Answer: D) Thymine. 19. What organelle is mostly responsible for turgor pressure? A) Cell wall. B) Cytoplasm. C) Vacuole. D) Nucleus. Show Answer Correct Answer: C) Vacuole. 20. Which of the following best defines denature? A) An enzyme working in optimal conditions. B) An enzyme's shape changes causing it to no longer catalyze reactions. C) A substrate's shape changes to match the enzyme. D) An enzyme shape changes to match the substrate. Show Answer Correct Answer: B) An enzyme's shape changes causing it to no longer catalyze reactions. 21. Which special thing do Nucleic Acids do, that no other biomolecule does? A) Store and carry genetic codes. B) Provide structural support. C) Supply or store energy for the cell. D) Protect organisms from water. Show Answer Correct Answer: A) Store and carry genetic codes. 22. The polymer which folds into proteins A) Polypeptide. B) Amino Acids. C) Nucleic Acids. D) Polynucleotides. Show Answer Correct Answer: A) Polypeptide. 23. Nucleotides are the building blocks of these biomolecules. A) CARBOHYDRATES. B) PROTEINS. C) LIPIDS (fats). D) NUCLEIC ACIDS. Show Answer Correct Answer: D) NUCLEIC ACIDS. 24. Carbohydrates include all of the following food sources except: A) Bread. B) Fruits. C) Vegetables. D) Butter. Show Answer Correct Answer: D) Butter. 25. Lipids/Carbohydrate provide long-term energy for cells. A) Lipids. B) Carbohydrates. C) All the above. D) None of the above. Show Answer Correct Answer: A) Lipids. ← 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