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CATALYST

CATALYST. Grab a white board, marker, and eraser Pull out your WSQ from homework Answer the following questions and give a justification… tell me why you are right! 1. What is the job of a catalyst? a. break down molecules b. speed up reactions

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CATALYST

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  1. CATALYST • Grab a white board, marker, and eraser • Pull out your WSQ from homework • Answer the following questions and give a justification… tell me why you are right! 1. What is the job of a catalyst? a. break down molecules b. speed up reactions c. destroy lipids d. create sugars 2. What biomolecule is an enzyme? a. carb b. lipid c. protein d. nucleic acids

  2. HOMEWORK • Activation energy interpretation sheet

  3. BIOMOLECULE REVIEW • On your whiteboard, write down the answer to the following questions • Do this WITHOUT TALKING • Hold your board up when you have an answer

  4. CARBOHYDRATES What are the monomers of carbohydrates called? Give one example of a carbohydrate. How can you tell something is a carbohydrate by looking at the word?

  5. NUCLEIC ACIDS What are the monomers of nucleic acids called? Give one example of a nucleic acid. What is the function of nucleic acids?

  6. LIPIDS What are the monomers of lipids called? Give one example of a lipid. What does the structure of a lipid look like?

  7. PROTEINS What are the monomers of proteins called? Give one example of a protein. What is the function of proteins?

  8. NOTES #2: ENZYMES Why are some people lactose intolerant?

  9. ENZYMES • Quick review of homework: KEY POINTS • Enzymes are PROTEINS • Enzymes speed up chemical reactions • Enzymes are reusable and specific • Enzymes can be broken

  10. WHY DO WE NEED ENZYMES? • Enzymes control every process that happens in our bodies! • Examples: • Digesting food • Moving muscles

  11. CHEMICAL REACTIONS • Chemical reactions – change one substance to another For Example: 2H + O ➝ H2O

  12. CHEMICAL REACTIONS 2H + O ➝H2O • The arrowis the most important part of the reaction • When we read a reaction, we say “makes” or “yields” instead of the arrow

  13. CHEMICAL REACTIONS 2H + O ➝ H2O Reactants /Substrates - come BEFORE the arrow Products– come AFTER the arrow

  14. LOCK AND KEY MODEL

  15. IDENTIFYING ENZYMES • You will always be able to identify an enzyme by what the word ends with • If a word ends in “-ase” then it is an enzyme! • Whatever the word starts with tells you about the reaction

  16. IDENTIFYING ENZYMES Lactase Hydrogenase Protease Lipase Helicase

  17. HOW DO ENZYMES WORK? • Enzymes help reactions occur by lowering activation energy • Activation Energy – amount of energy required for a reaction to occur

  18. ACTIVATION ENERGY

  19. CASE STUDY • Why are some people lactose intolerant? • We will be reading a case study and figuring this out today!

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