The biological catalysts that power every chemical reaction in your body
In short: From digestion to DNA replication, life depends on enzymes to function at high speeds. This video breaks down how these biological catalysts work, explaining the molecular mechanics that allow your body to perform complex chemistry almost instantly.
The video explores the fundamental role of enzymes as biological catalysts, which are proteins made of amino acids that accelerate chemical reactions without being consumed in the process. It details the molecular interaction between enzymes and substrates, specifically focusing on the 'active site.' This site's unique shape ensures enzyme specificity, meaning each enzyme only interacts with a particular substrate.
To illustrate this, the video utilizes the 'Lock and Key' model, a standard framework used in GCSE curricula like AQA, Edexcel, and OCR to explain how the physical fit between an enzyme and its substrate dictates biological function.
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Sources
- Summary by Intellect · source: GCSE Biology - What are Enzymes? (2026/27 exams)
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