This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 9 Biomolecules – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 9 Biomolecules Quiz 6 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The differences between two molecules include the type of sugar that forms a section of the molecules and the identify of one of the four nitrogenous bases that make up another section of the molecules. These two molecules are- A) Proteins. B) Lipids. C) Nucleic acids. D) Complex carbohydrates. Show Answer Correct Answer: C) Nucleic acids. 2. What is the primary role of nucleic acids in living organisms? A) Energy storage. B) Genetic information storage and transfer. C) Structural support. D) Insulation. Show Answer Correct Answer: B) Genetic information storage and transfer. 3. Which of the following is an example of ketohexose? A) Mannose. B) Galactose. C) Maltose. D) Fructose. Show Answer Correct Answer: D) Fructose. 4. Which biomolecule is used for short term energy storage? A) Carbohydrates. B) Proteins. C) Lipids. D) Nucleic acids. Show Answer Correct Answer: A) Carbohydrates. 5. In DNA, adenine pairs with: A) Guanine. B) Thymine. C) Cytosine. D) Uracil. Show Answer Correct Answer: B) Thymine. 6. ..... can contain long fatty acid chains. A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic acids. Show Answer Correct Answer: B) Lipids. 7. In a sample of DNA, 20 percent is Adenine. What are the percentages of the other bases? A) Thymine-30 percent, Cytosine 25 percent, Guanine 25 percent. B) Cytosine-20 percent, Thymine-30 percent, Guanine 25 percent. C) Thymine-20 percent, Cytosine 30 percent, Guanine 30 percent. D) Thymine-30 percent, Cytosine 30 percent, Guanine 20 percent. Show Answer Correct Answer: C) Thymine-20 percent, Cytosine 30 percent, Guanine 30 percent. 8. How many C-atoms are there is a pyranose ring? A) 3. B) 5. C) 6. D) 7. Show Answer Correct Answer: C) 6. 9. ..... is a non reducing sugar A) Fructose. B) Lactose. C) Sucrose. D) Glucose. Show Answer Correct Answer: C) Sucrose. 10. The nitrogen bases in DNA are held together by ..... A) Hydrogen bonds. B) Methylhydro bonds. C) Codons. D) A triplet. Show Answer Correct Answer: A) Hydrogen bonds. 11. What is the function of a lipid? A) To store genetic info. B) To provide long-term energy. C) To provide short-term energy. D) To make up our traits. Show Answer Correct Answer: B) To provide long-term energy. 12. Forms polymers A) Monomer. B) Polymer. C) All the above. D) None of the above. Show Answer Correct Answer: A) Monomer. 13. What is the name of the chemical reaction that links monomers to form a polymer? A) Hydrolysis. B) Dehydration synthesis. C) SN2. D) Peptide bond formation. Show Answer Correct Answer: B) Dehydration synthesis. 14. Which biomolecule is used for repair, reproduction and protein synthesis? A) Lipids. B) Proteins. C) Nucleic acids. D) Carbohydrate. Show Answer Correct Answer: C) Nucleic acids. 15. Carbohydrates have C, H, O. What is the ratio of elements? A) 2:1:2. B) 1:3:1. C) 1:2:1. D) 3:1:3. Show Answer Correct Answer: C) 1:2:1. 16. Deficiency of Vitamin B12 causes: A) Beri-beri. B) Scurvy. C) Pernicious anemia. D) Rickets. Show Answer Correct Answer: C) Pernicious anemia. 17. What is the body's second most preferred food source? A) Carbohydrate. B) Lipid. C) Nucleic acid. D) Protein. Show Answer Correct Answer: B) Lipid. 18. What is the job function of starchs A) To provide energy and regulate blood glucose. B) To build and repair tissues. C) To carry oxygen in the blood. D) To help in digestion. Show Answer Correct Answer: A) To provide energy and regulate blood glucose. 19. What does hydro-or hydra-mean? A) Air. B) Fire. C) Water. D) Rock. Show Answer Correct Answer: C) Water. 20. What are foods that are high in carbs? A) Eggs, fish, poultry. B) Cheese, meats, vegetables. C) Bread, potatoes, and pasta. D) Multitude of oils, butter and condiments. Show Answer Correct Answer: C) Bread, potatoes, and pasta. 21. Assertion:During denaturation of protein primary structure gets destroyed.Reason:Curdling of milk is an example of denaturation of protein. 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: D) Both A & R are wrong. OR A is wrong & R is correct. 22. What is the monomer (building block) of a protein? A) Amino acids. B) Nucleotide. C) Fatty acid. D) Monosaccharide. Show Answer Correct Answer: A) Amino acids. 23. Do we eat nucleic acids? A) Yes. B) No. C) Only sometimes on accident. D) None of the above. Show Answer Correct Answer: A) Yes. 24. Which elements are commonly found in biomolecules? A) Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorous. B) Sodium, Potassium, Chlorine, Calcium. C) Iron, Copper, Zinc, Magnesium. D) Aluminum, Silicon, Titanium, Nickel. Show Answer Correct Answer: A) Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorous. 25. Nucleotide is obtained from nucleoside just by adding A) Water. B) Sugar. C) Salt. D) Phosphate group. Show Answer Correct Answer: D) Phosphate group. ← 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 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