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Class 11 Biology Practice Test: Biomolecules - Enzymes and Biocatalysts
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Avg score: 68% • Most missed: “Which of these is the second step of an enzymatic reaction?”
Class 11 Biology Practice Test: Biomolecules - Enzymes and Biocatalysts
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25 Questions

1. Which of these is the third step of an enzymatic reaction?
2. Which of these is the second step of an enzymatic reaction?
3. Velocity of an enzymatic reaction keeps on increasing with an increase in substrate concentration. True or false?
4. How many classes are enzymes divided into?
5. If the formation of carbonic acid is uncatalyzed, how many product molecules are formed every hour?
6. What reaction is catalyzed by carbonic anhydrase?
7. Which of these is the cofactor for carboxypeptidase?
8. How can we express the rate of a physical or chemical process?
9. The energy of the transition state of an enzymatic reaction is _____
10. What is the heme portion of catalase known as?
11. Which of these statements is true regarding competitive inhibitors?
12. Up to what temperature does the enzymes of thermophilic organisms stay active?
13. Yeast ferments glucose into _____
14. How many carbon atoms do five molecules of pyruvic acid contain?
15. Which of these conditions signify an exothermic reaction?
16. Nicotinamide adenine dinucleotide is a _____
17. What is the end product of glycolysis under anaerobic conditions?
18. When the direction is specified, then the rate of a reaction is also called its velocity. True or false?
19. Which of these enzymes are not proteinaceous?
20. What does the graph represent?
The graph represents effect of change in concentration of substrate on enzyme activity
21. At which part of the enzyme does the substrate fit in?
22. How are enzymes different from catalysts?
23. Which of these statements is false regarding transition states in enzymatic reactions?
24. What type of enzyme catalyzes the conversion of d-lactic acid to l-lactic acid?
25. How many molecules of pyruvic acid are formed from 8 molecules of glucose?

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