This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 9 Biomolecules – Quiz 25 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 9 Biomolecules Quiz 25 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What are biomolecules? A) Large elements. B) Molecules needed for life. C) Characteristics of life. D) Nucleotides. Show Answer Correct Answer: B) Molecules needed for life. 2. Which biomolecule is composed of long chains of nucleotides? A) Proteins. B) Lipids. C) Nucleic acids. D) Carbohydrates. Show Answer Correct Answer: C) Nucleic acids. 3. Enzymes are also called ..... because they speed up chemical reactions. A) Cartlige. B) Turbo. C) Catalyst. D) Analysis. Show Answer Correct Answer: C) Catalyst. 4. Which biomolecule 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. 5. DNA and RNA are an example of A) Amino Acids. B) Proteins. C) Lipids. D) Nuclei Acids. Show Answer Correct Answer: D) Nuclei Acids. 6. Which biomolecule includes fats, such as triglycerides, oils, phospholipids, or cholesterol; insoluble in water; provides energy storage, insulation, part of cell membrane, and hormones A) Nucleic Acid. B) Lipids. C) Carbohydrate. D) Protein. Show Answer Correct Answer: B) Lipids. 7. Amino acids are building blocks of what biomolecule? A) Carbohydrates. B) Lipids. C) Nucleic Acid. D) Protein. Show Answer Correct Answer: D) Protein. 8. What does the element O stand for? A) Obsoletium. B) Ornitherium. C) Osmium. D) Oxygen. Show Answer Correct Answer: D) Oxygen. 9. Many monomers can be linked together to form ..... A) Building blocks. B) Chemical reactions. C) Polymers. D) Energy. Show Answer Correct Answer: C) Polymers. 10. Which biomolecule makes up the cell membrane and is used for long term energy storage? A) Lipids. B) Carbohydrates. C) Proteins. D) Nucleic acids. Show Answer Correct Answer: A) Lipids. 11. Which of the following sugars are the components of lactose? A) Glucose & galactose. B) Fructose and galactose. C) Glucose and glucose. D) Glucose & fructose. Show Answer Correct Answer: A) Glucose & galactose. 12. What is the function of a protein? 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: D) To make up our traits. 13. Which of these is NOT true? A) Enzymes can denature (change shape) when the temperature gets too high. B) Enzymes can only be used once in a chemical reaction. C) Extreme pH can denature enzymes. D) Enzymes speed up chemical reactions. Show Answer Correct Answer: B) Enzymes can only be used once in a chemical reaction. 14. There are a total of ..... different amino acids A) 20. B) 1. C) 4. D) Unlimited. Show Answer Correct Answer: A) 20. 15. Starch is insoluble, yet it accumulates in large quantity in Potato tuber because A) It is useful for storage. B) Starch is synthesised in tubers. C) Tubers respire slowly. D) Translocated sucrose is polymerised here. Show Answer Correct Answer: A) It is useful for storage. 16. What is a catalyst? A) A substance that slows down a reaction. B) A substance that speeds up a reaction. C) A substance the stops a reaction. D) A substance that explodes. Show Answer Correct Answer: B) A substance that speeds up a reaction. 17. What is the best definition of the function of nucleic acids? A) They contain defense mechanisms against bacteria. B) They contain the information that makes you and makes you different from every other living thing. C) They are used as the structural components of the body (muscles and organs). D) They create the cell membrane. Show Answer Correct Answer: B) They contain the information that makes you and makes you different from every other living thing. 18. Which 2 molecules contains the elements C-H-O and function pertains to energy? A) Lipids and Protein. B) Carbohydrates and Nucleic Acids. C) Protein and Carbohydrates. D) Carbohydrates and Lipids. Show Answer Correct Answer: D) Carbohydrates and Lipids. 19. What atoms do nucleic acids have? A) C, H and S. B) C, H and N. C) C, H, O, N, and P. D) C only. Show Answer Correct Answer: C) C, H, O, N, and P. 20. Amino acids are connected with ..... bonds to form ..... A) Peptide; proteins. B) Peptide; lipids. C) Hydrogen; proteins. D) Hydrogen; lipids. Show Answer Correct Answer: A) Peptide; proteins. 21. There are ..... nitrogen bases in a codon. A) 2. B) 3. C) 4. D) No. Show Answer Correct Answer: B) 3. 22. Which of the following term refers to the combination of two types of monosaccharides? A) Monosaccharide. B) Disaccharide. C) Polysaccharide. D) None of the above. Show Answer Correct Answer: B) Disaccharide. 23. Which of the following elements is not frequently found in organic compounds? A) Carbon. B) Hydrogen. C) Oxygen. D) Chlorine. Show Answer Correct Answer: D) Chlorine. 24. Which of the following reactions of glucose can be explained only by its cyclic structure? A) Glucose forms pentaacetate. B) Glucose reacts with hydroxylamine to form an oxime. C) Pentaacetate of glucose does not react with hydroxylamine. D) Glucose is oxidised by nitric acid to gluconic acid. Show Answer Correct Answer: C) Pentaacetate of glucose does not react with hydroxylamine. 25. Which of the following base is not present in DNA? A) Adenine. B) Thymine. C) Cytosine. D) Uracil. Show Answer Correct Answer: D) Uracil. ← 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