Lock and Key Model in Enzymes

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What is the Lock and Key Model?
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The Lock and Key Model is a theory explaining how enzymes and substrates interact based on shape complementarity.
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Who proposed the Lock and Key Model?
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Emil Fischer proposed the Lock and Key Model in 1894.
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How does the Lock and Key Model differ from the Induced Fit Model?
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The Lock and Key Model suggests strict specificity, while the Induced Fit Model suggests flexibility in enzyme shape.
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What is substrate specificity?
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Substrate specificity refers to the ability of an enzyme to select and catalyze a particular substrate.
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Can the Lock and Key Model explain all enzyme reactions?
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No, it cannot explain all enzyme reactions as some require flexibility as proposed by the Induced Fit Model.
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Why is the Lock and Key Model important?
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It provides a fundamental understanding of enzyme specificity and catalysis.
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What is an active site?
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An active site is the region on an enzyme where substrate molecules bind and undergo a chemical reaction.
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How does enzyme specificity benefit organisms?
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It ensures precise and efficient biochemical reactions necessary for life processes.
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What role does shape play in the Lock and Key Model?
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Shape determines the ability of the substrate to bind to the enzyme's active site.
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How did Emil Fischer test the Lock and Key Model?
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Emil Fischer used experiments with sugars and enzymes to demonstrate substrate specificity.
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What are enzymes?
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Enzymes are biological catalysts that speed up chemical reactions in living organisms.
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What is an example of enzyme specificity?
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The enzyme sucrase specifically breaks down the sugar sucrose into glucose and fructose.
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In what field is the Lock and Key Model particularly useful?
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It is particularly useful in the fields of biochemistry and pharmacology.
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What limitation does the Lock and Key Model have?
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It does not account for changes in enzyme shape during substrate binding.
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How can enzyme inhibitors affect enzymes functioning according to the Lock and Key Model?
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Inhibitors can block the active site, preventing substrate binding and enzyme functionality.
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