This quiz works best with JavaScript enabled. Home > Biochemistry > General > Biochemistry – Quiz 48 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biochemistry Quiz 48 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is a polypeptide with more than 100 amino acids? A) Amino acid. B) Polypeptide. C) Oligopeptide. D) Protein. Show Answer Correct Answer: D) Protein. 2. Which colour form the amino acids that cointauins an alfa-amino group in a reaction with ninhydrine? A) Violet-red. B) Violet-blue. C) Red-blue. D) Yellow-blue. Show Answer Correct Answer: B) Violet-blue. 3. Substances that have a pH more than 7 are considered: A) Acidic. B) Basic. C) Neutral. D) None of above. Show Answer Correct Answer: B) Basic. 4. These organic molecules are used by the body for long term storage of energy and make up the structure of cell membranes. A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: B) Lipids. 5. A lock and key is sometimes used as a model to promote understanding of enzymes. Which characteristic of enzymes or their action is best illustrated by this model? A) The sensitivity of enzymes to changes in pH. B) The change in activation energy the enzymes cause. C) The specificity of fit between an enzyme and a substrate. D) The increase in reaction rate due to the action of the enzyme. Show Answer Correct Answer: C) The specificity of fit between an enzyme and a substrate. 6. Which type of substances serves as a catalyst for reactions that break large food molecules intosmaller useful molecules? A) Enzymes. B) Vitamins. C) Lipids. D) Nucleotides. Show Answer Correct Answer: A) Enzymes. 7. Reactions that break down molecules A) Anabolic. B) Burning. C) Catabolic. D) Thermal. Show Answer Correct Answer: C) Catabolic. 8. What is Comparative Biochemistry A) The study of relationships of evolution between organisms. B) The study of disease. C) The study of chemistry and how it affects disease. D) None of above. Show Answer Correct Answer: A) The study of relationships of evolution between organisms. 9. Retinol can be found in all of the following, EXCEPT A) Liver. B) Meat. C) Yellow fruit. D) Eggs. Show Answer Correct Answer: C) Yellow fruit. 10. An unique carbohydrate found in bacterial cell wall is ..... A) Peptidoglycan. B) Cellulose. C) Pectin. D) All of the above. Show Answer Correct Answer: A) Peptidoglycan. 11. Phospholipids make up the cell's ..... A) Mitocondrea. B) Cell Wall. C) Cell Membrane. D) DNA. Show Answer Correct Answer: C) Cell Membrane. 12. Which of the 4 major macromolecules provides a quick burst of energy? A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: A) Carbohydrates. 13. Which property of water allows it to stick to other water molecules and create surface tension? A) Cohesion. B) Adhesion. C) Heat Capacity. D) Universal Solvency. Show Answer Correct Answer: A) Cohesion. 14. Polysaccharides are use in the body as a form of ..... A) Building Block. B) Storage. C) Quick Energy. D) Instructions. Show Answer Correct Answer: B) Storage. 15. Which of the following are NOT a property of water that makes it vital to life? A) Density. B) Heat capacity. C) Polarity. D) Solvent ability. Show Answer Correct Answer: C) Polarity. 16. This type of fat is can be found in plants and is often liquid at room temperature. A) Saturated fat. B) Unsaturated fat. C) Monosaccharide. D) Polysaccharide. Show Answer Correct Answer: B) Unsaturated fat. 17. Simple sugars are also called ....., the monomers of all carbohydrates. A) Monsaccharide. B) Disaccharide. C) Polysaccharide. D) Starch. Show Answer Correct Answer: A) Monsaccharide. 18. Enzymes are types of ..... A) Lipids. B) Proteins. C) Nucleic Acids. D) Carbohydrates. Show Answer Correct Answer: B) Proteins. 19. What makes a compound organic? A) It must contain hydrogen atoms. B) Its only found in living things. C) It must contain carbon atoms. D) It must contain water. Show Answer Correct Answer: C) It must contain carbon atoms. 20. Which of the following should give a positive result for Seliwanoff's test? A) Fructose. B) Glucose. C) Starch. D) Lactose. Show Answer Correct Answer: A) Fructose. ← 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