This quiz works best with JavaScript enabled. Home > Agriculture > Biochemistry > General > Biochemistry – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biochemistry Quiz 9 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which is the strongest acid? A) Ph of 4. B) Ph of 1. C) Ph of 7. D) Ph of 9. Show Answer Correct Answer: B) Ph of 1. 2. What is the role played by sodium- bicarbonate in Benedict's solution? A) Chelate to copper sulfate. B) Maintain pH. C) Supply carbon di oxide to the solution. D) As an additive. Show Answer Correct Answer: B) Maintain pH. 3. Which of the following describes an isotope? A) Same number of neutrons, different number of electrons. B) Same number of neutrons, different number of protons. C) Same number of protons, different number of neutrons. D) Same number of protons, different number of electrons. Show Answer Correct Answer: C) Same number of protons, different number of neutrons. 4. What does protein do for your body? A) Build and repair muscle. B) Aid in hormone development. C) Increase strength. D) All of the above. Show Answer Correct Answer: D) All of the above. 5. Substances that have a pH less than 7 are considered: A) Acidic. B) Basic. C) Neutral. D) None of above. Show Answer Correct Answer: A) Acidic. 6. Amino acids are the monomers of A) Carbohydrates. B) Lipids. C) Nucleic Acids. D) Proteins. Show Answer Correct Answer: D) Proteins. 7. When an enzyme is denatured it loses its ..... and cannot function any longer. A) Reactants. B) Products. C) Substrate. D) Shape. Show Answer Correct Answer: D) Shape. 8. What is the product of transcription? A) DNA. B) TRNA. C) Proteins. D) MRNA. Show Answer Correct Answer: D) MRNA. 9. What type of reaction builds macromolecules? What is the byproduct? A) Hydrolysis ; water. B) Dehydration ; water. C) Hydrolysis ; no byproduct. D) Dehydration ; no byproduct. Show Answer Correct Answer: B) Dehydration ; water. 10. A major type of lipids found in cell membranes is: A) Phospholipids. B) Triglycerides. C) Waxes. D) Glycerol. Show Answer Correct Answer: A) Phospholipids. 11. Amylase breaks down alpha-glycosidic linkages. Which of the following could amylase break down? A) Glycogen and starch. B) Glycogen and cellolose. C) Starch and chitin. D) Cellulose and chitin. Show Answer Correct Answer: A) Glycogen and starch. 12. Which of the following processes requires energy? A) Diffusion. B) Osmosis. C) Active transport. D) Facilitated diffusion. Show Answer Correct Answer: C) Active transport. 13. Phospholipids are ..... A) Hydrophobic. B) Hydrophilic. C) Both Philic & Phobic. D) Non-polar. Show Answer Correct Answer: C) Both Philic & Phobic. 14. What happens when there is a mutation in the Cytochrome C gene. A) The organism breathes better. B) The organism dies. C) The organism gains super strength. D) None of above. Show Answer Correct Answer: B) The organism dies. 15. Nucleotides are monomers of A) Lipids. B) Proteins. C) Nucleic Acids. D) Carbohydrates. Show Answer Correct Answer: C) Nucleic Acids. 16. What type of bond gives a water molecule its unique properties? A) Covalent. B) Ionic. C) Nonpolar. D) Hydrogen. Show Answer Correct Answer: D) Hydrogen. 17. Why is Carbon so important to living things? A) It forms molecules easily. B) It can form many shapes. C) It is in most organic molecule. D) All of these. Show Answer Correct Answer: D) All of these. 18. This type of reaction links monomers together. A) Hydrolysis reaction. B) Condensation reaction. C) Chemical reaction. D) Photosynthesis reaction. Show Answer Correct Answer: B) Condensation reaction. 19. If someone is lactose intolerant, they lack the enzyme ..... A) Lipase. B) Lactase. C) Lactose. D) Milk. Show Answer Correct Answer: B) Lactase. 20. Which is a least likely primary function of proteins? A) To act as an organic catalyst. B) To supply short-term energy. C) To build and repair damaged cells. D) To defend against foreign invaders. Show Answer Correct Answer: B) To supply short-term energy. 21. The process to go from DNA to mRNA is ..... A) Translation. B) Transcription. C) Replication. D) None of above. Show Answer Correct Answer: B) Transcription. 22. The enzymes of H2O2catabolism present in peroxisomes are A) Sulfuric Acid and Peroxidase. B) Peroxidase and Catalase. C) Oxidase and Peroxidase. D) Catalase and Oxidase. Show Answer Correct Answer: B) Peroxidase and Catalase. 23. Vitamin D is abundant in the following foods: A) Milk fortified with vitamin D. B) Fish. C) Egg yolks. D) All the above. Show Answer Correct Answer: D) All the above. 24. Which 2 kinds of particles make up the nucleus of an atom? A) Electrons and neutrons. B) Electrons and nuclei. C) Protons and neutrons. D) Protons and kryptons. Show Answer Correct Answer: C) Protons and neutrons. 25. When choosing carbohydrates, choose ones low in added ..... A) Fat. B) Vitamins. C) Sugar. D) Fiber. Show Answer Correct Answer: C) Sugar. 26. What bonds hold the secondary structure of proteins together? A) Peptide bonds. B) Ionic bonds. C) Hydrogen bonds. D) Hydrophobic interactions. Show Answer Correct Answer: C) Hydrogen bonds. 27. Products are known as alditols A) Benedict's Test. B) Osazonne Formation. C) Oxidation. D) Reduction to alcohols. Show Answer Correct Answer: D) Reduction to alcohols. 28. The characteristic that all lipids have in common is ..... A) Do not dissolve in water. B) Acidic when mixed with water. C) No high energy content. D) Made of lots of double bonds. Show Answer Correct Answer: A) Do not dissolve in water. 29. Which of the following binds to the active site of an enzyme? A) Substrate. B) Product. C) Codon. D) None of the above. Show Answer Correct Answer: A) Substrate. 30. The Precipitation of Protein is a form of A) Denaturation. B) Lysis. C) Catalytic reactions. D) Hydrolysis. Show Answer Correct Answer: A) Denaturation. ← 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