The Lock and Key Theory
The lock and key theory is a simplified model used to explain how enzymes show high specificity for their substrates.
Can you describe the active site's role in one sentence?
What is The Lock and Key Theory?
"The lock and key theory is a model explaining the specificity of enzyme-substrate complexes."
Which statement accurately describes enzymes at a GCSE level?
Why are enzymes described as biological catalysts?
Why are enzymes described as biological catalysts?
Which statement accurately describes enzymes at a GCSE level?
Enzyme Specificity
The substrate (key) fits into the active site (lock).
The shape of the active site is complementary to the substrate.
Chemical reactions occur while the substrate is bound.
Remember the keyword "complementary" when describing how the substrate fits.
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