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

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