This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 9 Biomolecules – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 9 Biomolecules Quiz 1 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Bread, Pasta, Fruit, and Vegetables A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: A) Carbohydrates. 2. The loss of a protein's structure is called ..... A) Denaturation. B) Unfolding. C) Coiling. D) Inactivation. Show Answer Correct Answer: A) Denaturation. 3. In a saturated fat, you would expect to find all of the following except- A) Single-bonded carbon atoms. B) CH$_{3}$ at one end. C) Fatty acid(s) attached with glycerol. D) Double bonded carbon atoms fatty acids. Show Answer Correct Answer: D) Double bonded carbon atoms fatty acids. 4. The basic building block of nucleic acids is: A) Amino acid. B) Nucleotide. C) Monosaccharide. D) Fatty acid. Show Answer Correct Answer: B) Nucleotide. 5. Which of the following biomolecules can act as hormones? A) Proteins. B) Lipids. C) Carbohydrates. D) Nucleic acids. Show Answer Correct Answer: A) Proteins. 6. Which biomolecule is in pastas and breads? A) Lipid. B) Protein. C) Nucleic Acid. D) Carbohydrate. Show Answer Correct Answer: D) Carbohydrate. 7. What is the name of protein polymers? A) Polysaccharides. B) Triglycerides. C) Polypeptides. D) DNA and RNA. Show Answer Correct Answer: C) Polypeptides. 8. Many land plants store energy in starch. When energy is needed, the starch molecules can be broken down quickly. This chemical reaction produces which of the following? A) Amino acids. B) Lipids. C) Monosaccharides. D) RNA chains. Show Answer Correct Answer: C) Monosaccharides. 9. Lipids are insoluble in water because their molecules are ..... ? A) Hydrophilic. B) Hydrophobic. C) Neutral. D) Zwitter ions. Show Answer Correct Answer: B) Hydrophobic. 10. What are polymers made of? A) Lipids. B) Monomers. C) Enzymes. D) Macromolecules. Show Answer Correct Answer: B) Monomers. 11. Lipids are- A) Insoluble in water. B) Readily soluble in organic solvent. C) Important constituent of biological membrane. D) All. Show Answer Correct Answer: D) All. 12. Which biomolecule is in charge of storing and expressing genetic information? A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: D) Nucleic Acids. 13. What is the polymer of a lipid A) Triglyceride. B) Fatty Acids. C) Phospholipid. D) Lipids do not have a polymer. Show Answer Correct Answer: D) Lipids do not have a polymer. 14. A positive Biuret's Test will turn which color? A) Red. B) Blue. C) Purple. D) Yellow. Show Answer Correct Answer: C) Purple. 15. Which biomolecule includes sugars, cellulose and starch? A) Lipids. B) Proteins. C) Carbohydrates. D) Nucleic Acid. Show Answer Correct Answer: C) Carbohydrates. 16. Which of the following is not a carbon compound? A) Carbohydrates. B) Lipids. C) Nucleic Acids. D) Vitamins. Show Answer Correct Answer: D) Vitamins. 17. Eliminating waste is the primary function of the A) Excretory System. B) Digestive System. C) Respiratory System. D) Integumentary system. Show Answer Correct Answer: A) Excretory System. 18. What is the function of carbohydrates? A) Perform cell's functions/tasks. B) Fast energy. C) Energy storage. D) Alter other biomolecules. E) Store information for cells. Show Answer Correct Answer: B) Fast energy. 19. (question 10) What is the monomer for a protein? A) Monosaccharide. B) Triglyceride. C) Amino Acid. D) Nucleotide. Show Answer Correct Answer: C) Amino Acid. 20. Carbon, Hydrogen, Oxygen and Nitrogen are the elements that make up ..... ? A) Carbohydrate. B) Lipid. C) Protein. D) Nucleic acid. Show Answer Correct Answer: C) Protein. 21. Dystrophin is a molecule that holds muscle fibers together. In people with muscular dystrophy, a genetic disease that causes people to lose the ability to walk at a young age, dystrophin molecules never develop.What biomolecule is this person missing? A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: C) Proteins. 22. Denaturation of proteins involves: A) Breaking of peptide bonds. B) Loss of secondary and tertiary structure. C) Conversion of $\alpha$-helix to $\beta$-pleated sheet. D) Both (a) and (c). Show Answer Correct Answer: D) Both (a) and (c). 23. What is a fat molecule that stores energy? A) Lipid. B) Protein. C) Carbohydrate. D) None of the above. Show Answer Correct Answer: A) Lipid. 24. Which foods are high in protein? A) Meats, cheeses, milk, eggs. B) Breads, pasta, grains. C) Butter, oil, lard. D) Apples, Bananas, Grapes. Show Answer Correct Answer: A) Meats, cheeses, milk, eggs. 25. What is the name of a carbohydrate polymers? A) Polysaccharides. B) Triglycerides. C) Polypeptides. D) DNA and RNA. Show Answer Correct Answer: A) Polysaccharides. Next →Related QuizzesClass 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 10Class 11 Biology Chapter 9 Biomolecules Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books