Enzymes

Biology, HSSC-Punjab First Year. This chapter is split into 21 topics and has 500 practice questions. The topics covered are listed below, followed by 10 free sample questions from the chapter.

Topics in this chapter

1. Factors affecting enzyme activity: temperature and pH 25 questions
2. Temperature and enzyme activity: optima, denaturation and thermophiles 25 questions
3. Enzymes: role, characteristics and active site 25 questions
4. Enzyme inhibition: competitive and non-competitive 25 questions
5. pH and enzyme activity: optima and pH tolerance 25 questions
6. Reversible inhibition, significance and feedback inhibition 25 questions
7. Classification of enzymes 25 questions
8. Chapter review: enzymes (end-of-chapter exercise focus) 25 questions
9. Cofactors and coenzymes 25 questions
10. Mechanism of enzyme action and models 25 questions
11. Activation energy and the transition state in enzyme catalysis 25 questions
12. Factors affecting enzyme activity: enzyme and substrate concentration 25 questions
13. Enzyme classes and important subclasses (Figure 5.12) 25 questions
14. Optimum pH table and the pH curves of Figure 5.6 21 questions
15. Temperature graph (Figure 5.5) and data interpretation 20 questions
16. Enzyme and substrate concentration graphs (Figures 5.7 and 5.8) with data 21 questions
17. Enzyme inhibition: Figures 5.9-5.11 and classification of inhibitors 22 questions
18. Enzymes: rates, figures 5.1-5.4 and exercise items 21 questions
19. Classification of enzymes on the basis of substrates 20 questions
20. Applied enzyme scenarios and integrated reasoning 22 questions
21. Enzyme classes applied to glycolysis, the Krebs cycle and substrate-based groups 28 questions