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Extra Credit at the edge of my desk Take one if you’d like Graded for Accuracy
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1) Get in Groups at lab stations 2) Conduct your Experiment 3) When you are done: 1)Finish the back of your lab with your analysis and turn it in 2)Set up cornell notes on page 32 for Enzymes 1)EQ: What are enzymes?
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Set up the next page in your journal… Title: Enzymes Page: 32 Date: 9-29-15 Essential question: What are enzymes? Yes, Cornell notes!
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proteins that regulate cell processes ◦ help maintain homeostasis ◦ work best in specific conditions (temperature, pH, etc.) biological catalysts ◦ catalyst: a substance that speeds up a chemical reaction BIOLOGICAL catalysts are found in living things ◦ REDUCE the activation energy needed to start a reaction activation energy: how much energy it takes to start a reaction
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Enzymes are biological catalysts ◦ catalyst: a substance that speeds up a chemical reaction ◦ activation energy: how much energy it takes to start a reaction
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very specific ◦ perform specialized jobs ◦ have particular shapes that only fit with particular substrates (like a lock and key) substrate: a chemical that binds with an enzyme and changes in some way named for their job ◦ names end in –ase ◦ EXAMPLES: lactase (breaks down lactose) DNA polymerase (creates DNA polymers) protease (breaks down protein)
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DRAW THIS!! (reactants)
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https://www.youtube.com/watch?v=r1ryDVgx0zw. https://www.youtube.com/watch?v=r1ryDVgx0zw https://www.youtube.com/watch?v=wp_yyDEEC3k https://www.youtube.com/watch?v=wp_yyDEEC3k
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