Enzymes in Digestion
Enzyme structure and function, digestive enzymes, factors affecting enzyme activity, lock and key model, and practical investigations
What you'll cover
- Enzyme structure: protein with active site
- Lock and key model of enzyme action
- Enzyme specificity and substrate binding
- Amylase: starch → maltose
- Proteases: proteins → amino acids
- Lipases: lipids → glycerol + fatty acids
- pH effects on enzyme activity
- Temperature effects on enzyme activity
- Denaturation process and irreversibility
- Optimum conditions for different enzymes
- Enzyme production sites in digestive system
Study this topic
The Chemical Breakdown Champions
Key Facts: Digestive Enzymes
Enzyme Structure and Function
Enzyme Models: Lock and Key
Beyond GCSE: Induced Fit Model
Where Digestive Enzymes Work
Bile: The Enzyme Helper
Factors Affecting Enzyme Activity
Required Practical 4: Food Tests
Required Practical 5: Effect of pH on Enzyme Activity
Enzyme Deficiency Disorders
Calculation Skills: Enzyme Rates
How It Works: The Lock-and-Key Mechanism
Key Definitions
Common Misconceptions
Memory Aids
Exam Focus
Knowledge Organiser
Exam Tips
Sample Flashcards
Sample Questions
What are enzymes?
Explain the effect of increasing temperature on enzyme activity.
20
exam-style questions
25
revision flashcards
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