Biomolecules Quiz PDF

**Biomolecules Quiz** **1. Which of the following is the main function of carbohydrates?** - A\) Store genetic information - B\) Provide energy - C\) Act as enzymes - D\) Form cell membranes\ **Answer:** B) Provide energy **2. Which molecule is the primary component of cell membran...

**Biomolecules Quiz** **1. Which of the following is the main function of carbohydrates?** - A\) Store genetic information - B\) Provide energy - C\) Act as enzymes - D\) Form cell membranes\ **Answer:** B) Provide energy **2. Which molecule is the primary component of cell membranes?** - A\) Glucose - B\) Nucleic acids - C\) Phospholipids - D\) Proteins\ **Answer:** C) Phospholipids **3. Which type of bond holds amino acids together in a protein?** - A\) Hydrogen bond - B\) Ionic bond - C\) Peptide bond - D\) Disulfide bond\ **Answer:** C) Peptide bond **4. DNA and RNA are types of which biomolecule?** - A\) Lipids - B\) Carbohydrates - C\) Proteins - D\) Nucleic acids\ **Answer:** D) Nucleic acids **5. Which of these is a disaccharide?** - A\) Glucose - B\) Fructose - C\) Sucrose - D\) Glycogen\ **Answer:** C) Sucrose **6. Enzymes are a type of which biomolecule?** - A\) Lipid - B\) Carbohydrate - C\) Protein - D\) Nucleic acid\ **Answer:** C) Protein **7. The monomer of a protein is called a(n):** - A\) Fatty acid - B\) Nucleotide - C\) Amino acid - D\) Monosaccharide\ **Answer:** C) Amino acid **8. Which of the following elements is found in proteins but not in carbohydrates?** - A\) Carbon - B\) Hydrogen - C\) Nitrogen - D\) Oxygen\ **Answer:** C) Nitrogen **9. Which of these is NOT a function of lipids?** - A\) Long-term energy storage - B\) Insulation - C\) Structural component of cell membranes - D\) Carry genetic information\ **Answer:** D) Carry genetic information **10. Which molecule is the primary energy carrier in cells?** - A\) DNA - B\) ATP - C\) RNA - D\) NADH\ **Answer:** B) ATP **11. Cellulose is a carbohydrate found in:** - A\) Animal muscle tissue - B\) Plant cell walls - C\) Animal cell membranes - D\) DNA\ **Answer:** B) Plant cell walls **12. Which of these is the simplest form of carbohydrate?** - A\) Monosaccharide - B\) Disaccharide - C\) Polysaccharide - D\) Oligosaccharide\ **Answer:** A) Monosaccharide **13. Which type of lipid is used to make hormones?** - A\) Triglycerides - B\) Phospholipids - C\) Steroids - D\) Fatty acids\ **Answer:** C) Steroids **14. What type of molecule is glucose?** - A\) Protein - B\) Lipid - C\) Carbohydrate - D\) Nucleic acid\ **Answer:** C) Carbohydrate **15. What is the main function of nucleic acids?** - A\) Provide structural support - B\) Store and transmit genetic information - C\) Store energy - D\) Serve as enzymes\ **Answer:** B) Store and transmit genetic information **16. Which of these is a polysaccharide?** - A\) Glucose - B\) Sucrose - C\) Starch - D\) Fructose\ **Answer:** C) Starch **17. What kind of biomolecule are enzymes?** - A\) Lipid - B\) Carbohydrate - C\) Protein - D\) Nucleic acid\ **Answer:** C) Protein **18. Which of these is a characteristic of unsaturated fats?** - A\) Solid at room temperature - B\) Have double bonds - C\) Lack hydrogen atoms - D\) Both B and C\ **Answer:** D) Both B and C **19. Which nitrogenous base is found only in RNA?** - A\) Adenine - B\) Thymine - C\) Guanine - D\) Uracil\ **Answer:** D) Uracil **20. Which molecule is known as the \"universal solvent\"?** - A\) ATP - B\) Water - C\) Sodium chloride - D\) Carbon dioxide\ **Answer:** B) Water **21. Which macromolecule has a helical structure?** - A\) Lipid - B\) DNA - C\) Protein - D\) Carbohydrate\ **Answer:** B) DNA **22. Which of the following is a polymer of amino acids?** - A\) Starch - B\) Protein - C\) DNA - D\) Glycogen\ **Answer:** B) Protein **23. The backbone of DNA is composed of:** - A\) Amino acids - B\) Fatty acids - C\) Sugar-phosphate groups - D\) Carbohydrates\ **Answer:** C) Sugar-phosphate groups **24. Which of the following is a property of enzymes?** - A\) They are used up in reactions - B\) They increase the activation energy - C\) They are specific to substrates - D\) They can function without a substrate\ **Answer:** C) They are specific to substrates **25. Lipids are primarily composed of which two elements?** - A\) Carbon and nitrogen - B\) Carbon and hydrogen - C\) Oxygen and nitrogen - D\) Hydrogen and oxygen\ **Answer:** B) Carbon and hydrogen **26. In what form do animals primarily store carbohydrates?** - A\) Cellulose - B\) Glycogen - C\) Glucose - D\) Starch\ **Answer:** B) Glycogen **27. What type of reaction joins monomers to form polymers?** - A\) Hydrolysis - B\) Dehydration synthesis - C\) Combustion - D\) Oxidation\ **Answer:** B) Dehydration synthesis **28. Hemoglobin is an example of what type of protein?** - A\) Structural - B\) Transport - C\) Enzyme - D\) Hormone\ **Answer:** B) Transport **29. Which of the following structures represents the primary structure of a protein?** - A\) Sequence of amino acids - B\) Alpha helices and beta sheets - C\) Three-dimensional folding - D\) Multiple protein subunits\ **Answer:** A) Sequence of amino acids **30. Which of the following molecules provides energy directly to cellular processes?** - A\) DNA - B\) RNA - C\) ATP - D\) NAD+\ **Answer:** C) ATP