This quiz works best with JavaScript enabled. Home > Biochemistry > Biochemistry – Quiz 47 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biochemistry Quiz 47 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Dehydration synthesis removes water to join two simple sugars into a disaccharide. This reaction is considered to be ..... A) Anabolic. B) Catabolic. C) Inefficient. D) Entropic. Show Answer Correct Answer: A) Anabolic. 2. How does this relate to evolution. A) It does not. B) The more or less Cytochrome C the more or less the organism has evolved. C) The animal will die. D) None of above. Show Answer Correct Answer: B) The more or less Cytochrome C the more or less the organism has evolved. 3. What happens when enzymes are heated to a high temperature? A) The enzymes die. B) The shapes of the enzyme are altered denature. C) The enzymes' amino acid sequence changes. D) The enzymes remain the same. Show Answer Correct Answer: B) The shapes of the enzyme are altered denature. 4. What is a substrate? A) The molecules that binds to the enzyme at the active site, and causes the enzyme to carry out a task. B) The molecule that does not fit into an enzyme, and has no effect on the enzyme. C) The molecule that binds to a place other than the active site, and caused the enzyme to carry out a task. D) A water molecule that breaks down monomers. Show Answer Correct Answer: A) The molecules that binds to the enzyme at the active site, and causes the enzyme to carry out a task. 5. Once a new product leaves an enzyme, the enzyme is unchanged and ready for the next substrate. What is this called? A) Reusable. B) Catalyst. C) Specific. D) Fragile. Show Answer Correct Answer: A) Reusable. 6. How are the subunits of proteins linked together? A) Ionic bonds. B) Amino acids. C) Monomers. D) Peptide bonds. Show Answer Correct Answer: D) Peptide bonds. 7. What is a substance called if it speeds up a chemical reaction? A) Reusable. B) Catalyst. C) Specific. D) Fragile. Show Answer Correct Answer: B) Catalyst. 8. Sugars (glucose) and starch are examples of this organic molecule: A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: A) Carbohydrates. 9. All organisms contain four organic molecules. Which group of molecules contains fatty acids and glycerol, is insoluble in water, and functions in long term energy storage? A) Carbohydrates. B) Nucleic acids. C) Proteins. D) Lipids. Show Answer Correct Answer: D) Lipids. 10. An unknown molecule contains a sugar and a phosphate group. It is likely what? A) Carbohydrate. B) Protein. C) Lipid. D) Nucleic acid. Show Answer Correct Answer: D) Nucleic acid. 11. What type of reaction is shown below?monomer + monomer $\rightarrow$ polymer + water A) Dehyrolysis. B) Dehydration. C) Hydrolysis. D) Covalent. Show Answer Correct Answer: B) Dehydration. 12. First law of thermodynamics, also known as A) Law of conservation of energy. B) Law of conservation of entropy. C) Law of conservation of studies. D) All of the above. Show Answer Correct Answer: A) Law of conservation of energy. 13. The bond between amino acids within a protein chain is called a ..... ..... A) Peptide bond. B) Hydrogen bond. C) Ionic bond. D) Sulfur bridge. Show Answer Correct Answer: A) Peptide bond. 14. Which of the following foods are a good source of Vitamin B? A) Whole grains, such as wheat and oats. B) Fish and seafood. C) Eggs, dairy products, like milk and yogurt. D) All the above. Show Answer Correct Answer: D) All the above. 15. Carbohydrates are made of ..... A) C H O. B) C H O N. C) C H O N P. D) C H O N S. Show Answer Correct Answer: A) C H O. 16. A researcher wants to determine the effectiveness of an enzyme at various temperatures. Which of the following would best help the researcher determine how well the enzyme is working? A) The researcher should measure the rate of the reaction. B) The researcher should measure the amount of enzyme remaining after the reaction. C) The researcher should measure the temperature during the reaction. D) The researcher should measure the amount of product at the beginning of the reaction. Show Answer Correct Answer: A) The researcher should measure the rate of the reaction. 17. All the 20 amino acids answer the Ninhydrin Test except A) Glycin. B) Tryptophan. C) Proline. D) Valine. Show Answer Correct Answer: C) Proline. 18. Which molecule is an isomer of Glyceraldehyde-3-Phosphate (G3P)? A) DHAP. B) PEP. C) Pyruvic Acid. D) 1, 3 BPG. Show Answer Correct Answer: A) DHAP. 19. Carbohydrates are mostly soluble in ..... A) Protein. B) Water. C) Oil. D) Small quantities only. Show Answer Correct Answer: B) Water. 20. Which of these is NOT true? A) Enzymes can denature (change shape) when the temperature gets too high. B) Enzymes can only be used once in a chemical reaction. C) Extreme pH can denature enzymes. D) Enzymes speed up chemical reactions. Show Answer Correct Answer: B) Enzymes can only be used once in a chemical reaction. ← PreviousNext →Related QuizzesBiochemistry Quiz 1Biochemistry Quiz 2Biochemistry Quiz 3Biochemistry Quiz 4Biochemistry Quiz 5Biochemistry Quiz 6Biochemistry Quiz 7Biochemistry Quiz 8Biochemistry Quiz 9Biochemistry Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books