This quiz works best with JavaScript enabled. Home > Biochemistry > Biochemistry – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biochemistry Quiz 3 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Carbohydrate monomers are typically molecules of what shape? A) Capital E. B) Chains. C) Rings. D) None of above. Show Answer Correct Answer: C) Rings. 2. What are the monomers of proteins? A) Amino acids. B) Monosaccharides. C) Triglycerides. D) Nucleotides. Show Answer Correct Answer: A) Amino acids. 3. What does pH measure? A) The amount of hydrogen (H+) ions. B) The amount of hydroxide (OH-) ions. C) Amount of water. D) All of the above. Show Answer Correct Answer: A) The amount of hydrogen (H+) ions. 4. Which term refers to water having partial positive and a partial negative charge? A) Cohesion. B) Surface tension. C) Polarity. D) Adhesion. Show Answer Correct Answer: C) Polarity. 5. Which functional group is a base? A) Amine. B) Carboxyl. C) Methyl. D) Sulfhydryl. Show Answer Correct Answer: A) Amine. 6. Which of the following is true regarding enzymes? A) Operate according to the lock and key model. B) Can be reused for same type of reaction. C) Have specific temperature and pH operating ranges. D) All of the above. Show Answer Correct Answer: D) All of the above. 7. In the final step of glycolysis ATP is made through the process of: A) Substrate Level Phosphorylation. B) Oxidative Phosphorylation. C) Photo-Phosphorylation. D) RedOx Reactions. Show Answer Correct Answer: A) Substrate Level Phosphorylation. 8. Different types of Vitamins are: A) Fat-soluble. B) Water-soluble. C) Both A and B. D) None of the above. Show Answer Correct Answer: C) Both A and B. 9. Which of these is NOT a nucleic acid? A) DNA. B) RNA. C) Fatty Acid. D) All of these are Nucleic Acids. Show Answer Correct Answer: C) Fatty Acid. 10. What is the significance of nucleic acids for cells? A) They generate energy for the cell. B) They restrict what enters and leaves the cell. C) They support and maintain the shape of the cell. D) They provide all instructions for cellular activities. Show Answer Correct Answer: D) They provide all instructions for cellular activities. 11. Which is the strongest base? A) Ph of 1. B) Ph of 4. C) Ph of 7. D) Ph of 9. Show Answer Correct Answer: D) Ph of 9. 12. Which organic molecule is primarily used by cells as a source of energy? A) Amino Acid. B) Fatty Acid. C) Glucose. D) Protein. Show Answer Correct Answer: C) Glucose. 13. Which is a function of a protein? A) Fat storage. B) To provide the body with fast energy. C) Makes up the cell membrane. D) To catalyze chemical reactions. Show Answer Correct Answer: D) To catalyze chemical reactions. 14. Which of these describes a saturated fatty acid? A) All C-H bonds are full. B) They form straight chains. C) They are solids at room temp. D) All of the above. Show Answer Correct Answer: D) All of the above. 15. Examples of amino acids with nonpolar chains A) Alanine. B) Valine. C) Leucine. D) All the anteriors. Show Answer Correct Answer: D) All the anteriors. 16. Which type of bonding causes all of water's unique properties? A) Hydrogen bonding. B) Ionic bonding. C) Van der Waals bonding. D) Covalent bonding. Show Answer Correct Answer: A) Hydrogen bonding. 17. What enzyme bypasses (glucose + ATP ..... $\rightarrow$ glucose-6-phosphate + ADP) in gluconeogenesis A) Hexicokinase. B) Phosphofructokinase. C) Phosphoenolpyruvate carboxykinase. D) Glucose-6-phosphatase. Show Answer Correct Answer: D) Glucose-6-phosphatase. 18. What is the main difference between these two polymers:Proteins vs Carbohydrates A) Proteins are made up of amino acids. B) Proteins are made up of monosaccharides. C) Proteins are made up of nucleotides. D) Proteins are large molecules and carbohydrates are not. Show Answer Correct Answer: A) Proteins are made up of amino acids. 19. Which of the following molecules is classified as organic? A) Water. B) Oxygen. C) Protein. D) Sodium chloride. Show Answer Correct Answer: C) Protein. 20. The liver is an animal organ that removes and processes waste materials from the blood. Which of the following organelles would be found in a higher-than-normal frequency in liver cells? A) Ribosomes. B) Lysosomes. C) Mitochondria. D) Golgi apparati. Show Answer Correct Answer: B) Lysosomes. ← PreviousNext →Related QuizzesBiochemistry Quiz 1Biochemistry Quiz 2Biochemistry Quiz 4Biochemistry Quiz 5Biochemistry Quiz 6Biochemistry Quiz 7Biochemistry Quiz 8Biochemistry Quiz 9Biochemistry Quiz 10Biochemistry Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books