This quiz works best with JavaScript enabled. Home > Biochemistry > Biochemistry – Quiz 26 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biochemistry Quiz 26 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Our cells do not instantly change temperature on a hot day. This is mostly because of water's ..... A) Polarity. B) Cushioning. C) High Heat Capacity. D) Reactivity. Show Answer Correct Answer: C) High Heat Capacity. 2. What property of water makes it the 'universal solvent'? A) It is a polar molecule. B) It is an ionic compound. C) It contains hydrogen bonds. D) It steals electrons from other atoms. Show Answer Correct Answer: A) It is a polar molecule. 3. The resulted sugers of the hydrlosis of the sucrose are A) Polsacharides. B) Oxdizing sugers. C) Reducing sugers. D) Pentoses. Show Answer Correct Answer: C) Reducing sugers. 4. How would you prepare 10.00 mL of 0.6520 M HCl solution from a 1.255 M HCl solution? A) I would add 4 ml of 0.6520M HCL to a tube then add 6 ml of distaled water. B) I would add 5.19 ml of 0.6520M HCL to a tube then complete the volume up to 10 ml using distaled water. C) I would add 5.19 ml of 1.255 M HCL to a tube then complete the volume up to 10 ml using distaled water. D) I would add 4 ml of 1.255M HCL to a tube then add 6 ml of distaled water. Show Answer Correct Answer: B) I would add 5.19 ml of 0.6520M HCL to a tube then complete the volume up to 10 ml using distaled water. 5. The monomer of a nucleic acid is A) Monosaccharide. B) Amino Acid. C) Nucleotide. D) Triglyceride (3 Fatty Acids and 1 Glycerol). Show Answer Correct Answer: C) Nucleotide. 6. If the pH of a solution is 8, it is a ..... A) Strong acid. B) Weak base. C) Strong base. D) Weak acid. Show Answer Correct Answer: B) Weak base. 7. Which of the following organic compounds is the main source of energy for living things? A) Carbohydrates. B) Lipids. C) Nucleic acids. D) Proteins. Show Answer Correct Answer: A) Carbohydrates. 8. Which of these should you drink everyday? A) Milk. B) Water. C) Orange juice. D) Pepsi. Show Answer Correct Answer: B) Water. 9. What would happen if your body has finished up breaking down carbohydrates in your body? A) You'll die. B) It will start breaking down muscle/protein. C) It will start breaking down fat. D) You'll become lazy. Show Answer Correct Answer: C) It will start breaking down fat. 10. How many calories per gram do lipids provide? A) 4. B) 9. C) 20. D) 1. Show Answer Correct Answer: B) 9. 11. Which one of the following is present in Seliwanoff's reagent? A) Conc Sulfuric acid. B) Conc nitric acid. C) 5N Hydrochloric acid. D) Conc hydrochloric acid. Show Answer Correct Answer: C) 5N Hydrochloric acid. 12. Which of the following best compares the structures of lipids and carbohydrates? A) Both are made up of monosaccharide monomers, but lipids are hydrophobic and carbohydrates are hydrophilic. B) Both contain carbon and hydrogen, but carbohydrates also contain oxygen and lipids contain nitrogen. C) Both consist of carbon, hydrogen, and oxygen, but carbohydrates have repeating structural units and lipids do not. D) Both have a carbon backbone, but lipids also have an amino group and carbohydrates have a carboxylic acid group. Show Answer Correct Answer: C) Both consist of carbon, hydrogen, and oxygen, but carbohydrates have repeating structural units and lipids do not. 13. Polymers are joined together by: A) Synthesis. B) Hydration synthesis. C) Dehydration synthesis. D) Polymer synthesis. Show Answer Correct Answer: C) Dehydration synthesis. 14. What property of water allows it to be such a versatile solvent that it is often called the "universal solvent?" A) Purity. B) Polarity and cohesion. C) High heat capacity. D) Expansion upon freezing. Show Answer Correct Answer: B) Polarity and cohesion. 15. With enzymes, biochemical reactions would occur far too slowly to sustain life. A) TRUE. B) FALSE. C) DI AKO SURE. D) None of above. Show Answer Correct Answer: B) FALSE. 16. An atom that loses an electron becomes which of the following? A) A negatively charged ion. B) A neutral ion. C) A positively charged ion. D) None of above. Show Answer Correct Answer: C) A positively charged ion. 17. The primary purpose the body uses monosaccharides for is? A) Building muscles. B) Helping the Immune System. C) Immediate Energy. D) Generating Heat. Show Answer Correct Answer: C) Immediate Energy. 18. Acetylcholine is an important chemical signal in the nervous system. It is broken down into other chemicals by cholinesterase.Cholinesterase is which of the following? A) Enzyme. B) Hormone. C) Lipid. D) Organelle. Show Answer Correct Answer: A) Enzyme. 19. Which of the following items is NOT a polysaccharide? A) Chitin. B) Lactose. C) Starch. D) Glycogen. Show Answer Correct Answer: B) Lactose. 20. Which statement about enzymes in NOT true? A) Enzymes are composed of polypeptide chains. B) Enzymes form a temporary bond with a reactant. C) Enzymes are destroyed when they are used and must be made each time a reaction takes place. D) Each enzyme is specific because of its shape and catalyzes only certain reactions. Show Answer Correct Answer: C) Enzymes are destroyed when they are used and must be made each time a reaction takes place. ← PreviousNext →Related QuizzesBiochemistry Quiz 1Biochemistry Quiz 2Biochemistry Quiz 3Biochemistry Quiz 4Biochemistry Quiz 5Biochemistry Quiz 6Biochemistry Quiz 7Biochemistry Quiz 8Biochemistry Quiz 9Biochemistry Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books