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KEY CONCEPT Enzymes are catalysts for chemical reactions in living things.

KEY CONCEPT Enzymes are catalysts for chemical reactions in living things. http://www.cleanvideosearch.com/media/action/yt/watch?videoId=NdMVRL4oaUo. ENZYMES are catalysts for chemical reactions. Catalyst: speeds up chemical reactions. decrease activation energy DAE

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KEY CONCEPT Enzymes are catalysts for chemical reactions in living things.

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  1. KEY CONCEPTEnzymes are catalysts for chemical reactions in living things. http://www.cleanvideosearch.com/media/action/yt/watch?videoId=NdMVRL4oaUo

  2. ENZYMES are catalysts for chemical reactions. • Catalyst: speeds up chemical reactions. • decrease activation energy DAE • increase reaction rate IRR • Enzymes don’t change or get used up

  3. Enzymesallow chemical reactions to occur under tightly controlled conditions. • proteins. • end in -ase • Lactase Lactose

  4. Disruptions in homeostasis can prevent enzymes from functioning. • Enzymes function best in a small range of conditions. • Changes in temperature and pH can break H+ bonds. • enzyme’s function depends on its structure.

  5. Enable reactions to occur at lower temperatures • Control only 1 type of cell because of their specific shape • P. 48 • Enzymes Can…

  6. substrates (reactants) enzyme Substrates bind to an enzyme at certain places called active sites. • An enzyme’s structure allows only certain reactants to bind to the enzyme. Active site

  7. substrates together • bonds weaken • Product released • The lock-and-key model helps illustrate how enzymes function. CATALYZED REACTION

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