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Understanding Enzymes: Catalysts of Biochemical Reactions

Explore how enzymes, as globular proteins, accelerate reactions without altering themselves. Learn about active sites, enzyme-substrate specificity, and factors like temperature, pH, and substrate concentration affecting enzyme activity. Discover denaturation and the role of lactase in producing lactose-free milk.

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Understanding Enzymes: Catalysts of Biochemical Reactions

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  1. Topic 3.6 Enzymes

  2. Sucrase Substrate Product 3.6.1 Define enzyme and active site • ENZYME • Enzymes are globular proteins that works as catalyst of chemical reactions. • They speed up chemical reactions without being altered themselves. • Conventionally we say the enzyme acts on the substrate (S) to yield a product (P) • ACTIVE SITE • Active site is the region on the surface of the enzyme to which substrate(s) bind and which catalyses the reaction (the conversion of the substrate to the product).

  3. 3.6.1 Define enzyme and active site

  4. 3.6.2 Explain enzyme-substrate specificity

  5. 3.6.3 Explain the effects of Temperature, pH and Substrate Concentration on enzyme activity

  6. 3.6.3 Define denaturation Denaturation is a structural change in a protein that results in the loss (usually permanent) of its biological properties. Enzymes can be denatured by pH and Temperature.

  7. 3.6.5 Explain the use of lactase in the production of lactose free milk

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