Factors Affecting Rates of Reaction of Enzyme - OCR

Revision notes on factors affecting rates of enzyme reactions for A2 Chemistry (Biochemistry).

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Factors Affecting Rates of Reaction of
Enzyme Catalysed Reactions
Temperature
pH level
Enzyme Concentration
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Substrate Concentration
Competitive Inhibition
A molecule similar to substrate in shape fits in active site
It fits in shape of enzyme
Bu different enough so enzyme doesn't function
So active site is blocked
this is a reversible reaction
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Non - Competitive Inhibition
e.g. Heavy metal ions ­ Hg2+ or Pb2+
Binds at someplace other than the active site
causes change in 3D structure
Disrupts the active site
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