This quiz works best with JavaScript enabled. Home > Biochemistry > Biochemistry – Quiz 25 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biochemistry Quiz 25 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. It is referred to as the Hexose monophosphate shunt A) Phosphate pathways. B) Pentose phosphate pathways. C) Pentose pathways. D) All of the above. Show Answer Correct Answer: B) Pentose phosphate pathways. 2. Galactose and glucose are both monosaccharides with the molecular formula C6H12O6. When these two molecules undergo dehydration synthesis, they form lactose, milk sugar. What is the structural formula of lactose? A) C11H22O12. B) C12H24O12. C) C12H23O11. D) C12H22O11. Show Answer Correct Answer: D) C12H22O11. 3. The basic building blocks (monomers) of carbohydrates are: A) Nucleotides. B) Monosaccharides. C) Amino acids. D) Triglycerides. Show Answer Correct Answer: B) Monosaccharides. 4. ..... are molecules that boost the immune system. They do so by protecting cells from harmful molecules called free radicals. A) Antbodies. B) Surfactants. C) Anti free radicals. D) Antioxidants. Show Answer Correct Answer: D) Antioxidants. 5. Lipids are not soluble in water because they are ..... while water is ..... A) Cold, hot. B) Polar, non-polar. C) Non-polar, polar. D) Hydrolyzed, cohesive. Show Answer Correct Answer: C) Non-polar, polar. 6. What is the function of carbohydrates? A) Store genetic information. B) Store energy (long-term). C) Store energy (short-term). D) Build skin, hair, nails, muscles. Show Answer Correct Answer: C) Store energy (short-term). 7. Thermodynamics deals with the relationships between ..... and other forms of energy A) Heat. B) Biomolecules. C) Electrons. D) Organelles. Show Answer Correct Answer: A) Heat. 8. Carbon chains are principal features of both carbohydrates and lipids. What is the primary difference between these two types of macromolecules? A) Lipids always have longer carbon chains than carbohydrates. B) Carbohydrates cannot form rings like lipids can. C) Lipids provide energy, but carbohydrates cannot. D) Carbohydrates form ring structures, lipids form long chains. Show Answer Correct Answer: D) Carbohydrates form ring structures, lipids form long chains. 9. Examples include:glucose and fructose, sucrose and maltose, starch and glycogen A) Examples of carbohydrates. B) Extra energy, insulation, protection. C) Alanine, serine. D) Triglycerides. Show Answer Correct Answer: A) Examples of carbohydrates. 10. Contains the bases adenine, uracil, cytosine and guanine A) DNA. B) BOTH. C) RNA. D) None of above. Show Answer Correct Answer: C) RNA. 11. Which type of food gives you the most lipids? A) Salad and spaghetti. B) Steak and shrimp. C) Cheese and avocados. D) Peanut butter. Show Answer Correct Answer: C) Cheese and avocados. 12. Which of the following is NOT a part of the cell theory? A) Cells are the basic units of life. B) All living things are made of at least one cell. C) Very few cells reproduce. D) All cells arise from existing cells. Show Answer Correct Answer: C) Very few cells reproduce. 13. This type of atomic bond forms when atoms give or take electrons therefore altering their charge and become attracted to one another. A) Covalent Bonds. B) Ionic Bonds. C) Hydrogen Bonds. D) Metallic Bonds. Show Answer Correct Answer: B) Ionic Bonds. 14. The chemical reactions taking place in a cell will most likely speed up if the A) Genetic material stops replicating. B) The size of the cell increases. C) The enzymes involved become inactive. D) The concentration of the reactants is increased. Show Answer Correct Answer: D) The concentration of the reactants is increased. 15. What two monosaccharides make up maltose? A) Glucose + galactose. B) Glucose + glucose. C) Glucose + fructose. D) Glucose + glycogen. Show Answer Correct Answer: B) Glucose + glucose. 16. Ionic Bonding involves ..... A) The transfer of protons. B) The transfer of nuetrons. C) The transfer of electrons. D) None Of the above. Show Answer Correct Answer: C) The transfer of electrons. 17. How do you recognize a glycerol? A) It is a very long carbon skeleton with a carboxyl group at one end. B) It always consists of C, H, and O in a 1:2:1 ratio. C) It consists of a variable R group and an amine group. D) It is a 3 carbon compound with hydroxyl on each carbon. Show Answer Correct Answer: D) It is a 3 carbon compound with hydroxyl on each carbon. 18. Nitrogenous bases present in the DNA can be grouped into two categories: A) Adenine and guanine. B) Cytosine and uracil. C) Purines and pyrimidines. D) Cytosine and thymine. Show Answer Correct Answer: C) Purines and pyrimidines. 19. The study of the chemistry of the living world. A) Organic chemistry. B) Molecular chemistry. C) Biochemistry. D) None of above. Show Answer Correct Answer: C) Biochemistry. 20. A sugar, a phosphate group and a nitrogen base make up the building blocks of which organic compound? A) Carbohydrates. B) Lipids. C) Nucleic Acids. D) Proteins. Show Answer Correct Answer: C) Nucleic Acids. ← 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