Biology Chapter 6: Enzymes PDF

Biology Chapter 6: Enzymes Your Name: 1. What role do enzymes play in biological systems? A. They act as biocatalysts for chemical reactions. B. They undergo permanent changes during reactions. C. They are solely responsible for chemical reactions. D. They increase the temperature of r...

Biology Chapter 6: Enzymes Your Name: 1. What role do enzymes play in biological systems? A. They act as biocatalysts for chemical reactions. B. They undergo permanent changes during reactions. C. They are solely responsible for chemical reactions. D. They increase the temperature of reactions. 2. Which statement is true about the nature of enzymes? A. They are primarily protein in nature, except for ribozymes. B. They are uniformly large without specific active centers. C. They can be inorganic compounds. D. They are thermally stable and can withstand high temperatures. 3. What was the significant contribution of Buchner in 1883 regarding enzymes? A. He isolated the enzyme system from cell-free yeast extract. B. He identified the first enzyme structure. C. He coined the term enzyme. D. He discovered a method to synthesize enzymes artificially. 4. How does the action of enzymes compare to strong acids in protein hydrolysis? A. Enzymes take much longer to digest proteins compared to strong acids. B. The efficiency of enzymes decreases with higher temperatures. C. Enzymes are more effective than strong acids at all temperatures. D. Enzymes operate at lower temperatures and accomplish reactions faster. 5. Which of the following is NOT a characteristic of enzymes? A. Insensitive to temperature changes. B. Colloidal in nature. C. Thermolabile. D. Specific in action. 6. What does the term 'catalysis' refer to? A. The irreversible breakdown of enzymes. B. The action of promoting chemical reactions without change to the catalyst. C. The process that leads to the dissolution of compounds. D. The process of increasing reaction temperature. 7. Which enzyme-related term was coined by Kuhne? A. Biocatalyst. B. Catalysis. C. Zymase. D. Enzyme. 8. In what year did Berzelius coin the term 'catalysis'? A. 1926 B. 1878 C. 1883 D. 1836 9. What is a key difference between a catalyst and an enzyme? A. Catalysts are specific to biochemical processes. B. Enzymes are biocatalysts that are specific to living organisms. C. Enzymes can catalyze reactions at higher rates than catalysts. D. Catalysts can be organic, while enzymes are always inorganic. 10. Which of the following is an example of an enzyme's specific action? A. Hydrolysis of any random compound. B. Reacting with strong acids. C. Increasing the temperature of a substance. D. Breaking down sugar to alcohol.