This quiz works best with JavaScript enabled. Home > Biochemistry > General > Biochemistry – Quiz 19 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biochemistry Quiz 19 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What element is found in proteins but not carbs nor lipids? A) Carbon. B) Hydrogen. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: C) Nitrogen. 2. These chemicals help the body resist changes in pH. They are particularly useful in the blood. A) Buffers. B) Acids. C) Bases. D) Salts. Show Answer Correct Answer: A) Buffers. 3. Combination of anabolic and catabolic reactions A) Metastasis. B) Anacatabolism. C) Catabolism. D) Metabolism. Show Answer Correct Answer: D) Metabolism. 4. Meats are examples of ..... A) Proteins. B) Carbohydrates. C) Lipids. D) Nucleic acids. Show Answer Correct Answer: A) Proteins. 5. In plants, a storage product that results from the dehydration synthesis of many glucose molecules is A) Protein. B) A phosphate. C) An oil. D) Starch. Show Answer Correct Answer: D) Starch. 6. Which of the following has the HIGHEST pH? A) Stomach acid. B) Lemon juice. C) Human blood. D) Sea water. Show Answer Correct Answer: D) Sea water. 7. Which of the following environmental changes could denature an enzyme? A) Too high a concentration of substrate. B) Too high a concentration of enzyme. C) PH too low. D) Too low a concentration of substrate. Show Answer Correct Answer: C) PH too low. 8. Which enzyme adds a phosphate to F-6-P? A) PhosphoFructoKinase. B) Hexokinase. C) Aldolase. D) Pyruvate Kinase. Show Answer Correct Answer: A) PhosphoFructoKinase. 9. What are genes? A) Coded DNA instructions that control the production of protiensset of plans for their specific job. B) Set of plans for their specific job. C) Sequence of genetic messages. D) A blueprint. Show Answer Correct Answer: D) A blueprint. 10. Which of the following is the strongest base? A) 4. B) 14. C) 7. D) 15. Show Answer Correct Answer: B) 14. 11. Beans, seeds, and meats are a few examples of foods with this macromoleucle. A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: C) Proteins. 12. An organism has numerous amino acid monomers that need to be changed into a protein chain, which reaction will be used? A) Dehydration. B) Hydroloysis. C) Photosynthesis. D) Respiration. Show Answer Correct Answer: A) Dehydration. 13. The categories of carbohydrates based on structural complexity are: A) Monosaccharide, disaccharide, oligosaccharide, polysaccharide. B) Glucose, maltose trehalose, starch. C) Aldoses and ketoses. D) There are no categories of carbohydrates based on structure. Show Answer Correct Answer: A) Monosaccharide, disaccharide, oligosaccharide, polysaccharide. 14. ..... are 1-2% of your body mass. A) Carbs. B) Lipids. C) Nucleic Acids. D) Proteins. Show Answer Correct Answer: A) Carbs. 15. How many calories per gram do proteins provide? A) 4. B) 9. C) 20. D) 1. Show Answer Correct Answer: A) 4. 16. Identify the products in this reaction:6H2O + 6CO2 $\rightarrow$ C 6H12O6+ 6O2 . A) 6H2O and 6CO2. B) 6CO 2 and C6H12O6. C) 6H2O, C6H12O6, and 6O2. D) C6H12O6 and 6O2. Show Answer Correct Answer: D) C6H12O6 and 6O2. 17. Which particle carries a negative charge? A) Protons. B) Neutrons. C) Electrons. D) None of above. Show Answer Correct Answer: C) Electrons. 18. ..... are particularly important in the metabolism of sugars to provide energy. A) Phosphoric Esters. B) Glucose. C) Glycosidic Bond. D) Polysaccharides. Show Answer Correct Answer: A) Phosphoric Esters. 19. Which best explains how the structure of enzymes is related to theirfunction? A) Enzyme structures release the energy in their substrates. B) Enzyme structures react with their substrates. C) Enzymes' unique active site allows it to fit with only one substratemolecule. D) Enzymes interact with their substrates like welders building a steelskyscraper. Show Answer Correct Answer: C) Enzymes' unique active site allows it to fit with only one substratemolecule. 20. Larger polymers are formed when monomers are joined together by a ..... reaction. A) Dehydration synthesis. B) Digestion. C) Hydrolysis. D) Redox. Show Answer Correct Answer: A) Dehydration synthesis. ← PreviousNext →Related QuizzesBiochemistry QuizzesBiochemistry Quiz 1Biochemistry Quiz 2Biochemistry Quiz 3Biochemistry Quiz 4Biochemistry Quiz 5Biochemistry Quiz 6Biochemistry Quiz 7Biochemistry Quiz 8Biochemistry Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books