This quiz works best with JavaScript enabled. Home > Agriculture > Biochemistry > General > Biochemistry – Quiz 13 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biochemistry Quiz 13 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following environmental changes could denature an enzyme? A) PH too low. B) Too low a concentration of substrate. C) Too high a concentration of enzyme. D) Too high a concentration of substrate. Show Answer Correct Answer: A) PH too low. 2. Which enzyme adds a phosphate to F-6-P? A) Aldolase. B) PhosphoFructoKinase. C) Pyruvate Kinase. D) Hexokinase. Show Answer Correct Answer: B) PhosphoFructoKinase. 3. Which of the following is the strongest base? A) 4. B) 14. C) 7. D) 15. Show Answer Correct Answer: B) 14. 4. Beans, seeds, and meats are a few examples of foods with this macromoleucle. A) Nucleic Acids. B) Proteins. C) Lipids. D) Carbohydrates. Show Answer Correct Answer: B) Proteins. 5. 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. 6. 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. 7. ..... are 1-2% of your body mass. A) Nucleic Acids. B) Carbs. C) Proteins. D) Lipids. Show Answer Correct Answer: B) Carbs. 8. How many calories per gram do proteins provide? A) 4. B) 20. C) 9. D) 1. Show Answer Correct Answer: A) 4. 9. 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. 10. Which particle carries a negative charge? A) Protons. B) Neutrons. C) Electrons. D) None of above. Show Answer Correct Answer: C) Electrons. 11. ..... 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. 12. 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. 13. Larger polymers are formed when monomers are joined together by a ..... reaction. A) Dehydration synthesis. B) Hydrolysis. C) Redox. D) Digestion. Show Answer Correct Answer: A) Dehydration synthesis. 14. How many amino acids exist? How many of them are present in almost all proteins? A) 300, 10. B) 200, 20. C) 200, 30. D) 300, 20. Show Answer Correct Answer: D) 300, 20. 15. Foods that are high in the organic compound "Carbohydrates" A) Meats, beans, seeds/nuts, eggs. B) Bread, candy, crackers, potatoes. C) Cheese, butter, milk, and cereal. D) Sausage, Eggs, Pancakes & syrup. Show Answer Correct Answer: B) Bread, candy, crackers, potatoes. 16. Enyzmes are a very important type of protein used to A) Photosynthesize glucose in plants. B) Speed up chemical reactions. C) Send hormonal signals throughout body. D) Build bones in skeleton. Show Answer Correct Answer: B) Speed up chemical reactions. 17. Acts as a storage of nutrients or cell products A) Inclusions. B) Golgi Appartus. C) Nucleus. D) Ribosomes. Show Answer Correct Answer: A) Inclusions. 18. A graduated cylinder measures: A) Force ability. B) Weight. C) Mass. D) Volume. Show Answer Correct Answer: D) Volume. 19. Enzymes are considered to be A) Carbohydrate. B) Protein. C) Nucleic Acid. D) Lipids. Show Answer Correct Answer: B) Protein. 20. Which group of organic compounds contains fatty acids? A) Nucleic Acids. B) Proteins. C) Lipids. D) Carbohydrates. Show Answer Correct Answer: C) Lipids. 21. When an Apoenzymes and co-factor like co-enzymes or metal ion combined together to become an active enzymes, they will become: A) Complete Enzymes. B) Holoenzymes. C) Whole Enzymes. D) Wholenymes. Show Answer Correct Answer: B) Holoenzymes. 22. Choose the polysaccharide that functions as energy storage. A) Peptidoglycan. B) Chitin. C) Starch. D) Pectin. Show Answer Correct Answer: C) Starch. 23. This type of bond results from unequal sharing of electrons A) Nonpolar covalent bond. B) Hydrogen bond. C) Ionic bond. D) Polar covalent bond. Show Answer Correct Answer: D) Polar covalent bond. 24. If an atom has 10 protons, 10 neutrons, and 10 electrons, what is the mass of the atom? A) 10. B) 20. C) 30. D) None of above. Show Answer Correct Answer: B) 20. 25. Examples of amino acids with acid side chains. A) Glutamic acid. B) Aspartic acid. C) Both. D) None of above. Show Answer Correct Answer: C) Both. 26. How do enzymes speed up chemical reaction? A) Decreasing deactivation energy. B) Increasing activation energy. C) Increasing deactivation energy. D) Decreasing activation energy. Show Answer Correct Answer: D) Decreasing activation energy. 27. What suffix (word ending) is used in the names of most carbohydrates? A) -nic. B) -ose. C) -ase. D) -yme. Show Answer Correct Answer: B) -ose. 28. Which of these is most likely an enzyme? A) Sucrose. B) Amylase. C) Fructose. D) Galactose. Show Answer Correct Answer: B) Amylase. 29. Which biomolecule provides all living organisms with genetic information? A) Carbohydrates. B) Lipids. C) Nucleic Acid. D) Protein. Show Answer Correct Answer: C) Nucleic Acid. 30. What type of bond transfers electrons? A) Covalent. B) Van der waals. C) Ionic. D) Hydrogen. Show Answer Correct Answer: C) Ionic. ← PreviousNext →Related QuizzesBiochemistry QuizzesAgriculture QuizzesBiochemistry Quiz 1Biochemistry Quiz 2Biochemistry Quiz 3Biochemistry Quiz 4Biochemistry Quiz 5Biochemistry Quiz 6Biochemistry Quiz 7Biochemistry Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books