ENZYME ACTION
LOCK & KEY · TEMPERATURE EFFECT
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Lock & Key Model
ENZYME
← active site
substrate
product
product
°C
temperature
reaction rate
products made
1. Temperature Effect
Optimum ≈
37 °C
(body temp)
Too much heat →
denature
the shape of the active site changes
temp →
rate
2. How It Works
E + S
→ ES
→ E + P
E = enzyme · S = substrate · P = product
3. Remember
The enzyme itself does not change
Each enzyme is specific: only its own substrate
MATRIC BIOLOGY · ENZYMES · PUNJAB BOARDS
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