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Enzymes, Photosynthesis, & Cellular Respiration Entire Unit

Enzymes, Photosynthesis, & Cellular Respiration Entire Unit . 2012. Goals for the Day. Be able to describe ALL concepts from Ecology Be able to describe what an enzyme is and why it is important. Be define denaturing and define how proteins could become denatured. Folders.

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Enzymes, Photosynthesis, & Cellular Respiration Entire Unit

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  1. Enzymes, Photosynthesis, & Cellular Respiration Entire Unit 2012

  2. Goals for the Day • Be able to describe ALL concepts from Ecology • Be able to describe what an enzyme is and why it is important. • Be define denaturing and define how proteins could become denatured.

  3. Folders • Write Name on the top • Put in your folders • Questions of the Day • Study Guides • Test corrections!

  4. Test Corrections • You will correct each question you missed • On a separate sheet of paper: • Write out question, and then write the correct answer • For graphs, redraw & label the entire graph • For co-evolutionary relationships write out what each organism gets out of the relationship

  5. Goals for the Day • Be able to DRAW & describe what an enzyme is and what it does • Be able to define activation energy • Be able to name the things that affect enzyme activity & why they do so.

  6. Question of the Day What two things can denature an enzyme? What does it mean to denature an enzyme?

  7. Chemical Reactions The breaking down or building up of substances

  8. Example of a chemical equation Na + Cl NaCl The arrow is like an equals sign

  9. Chemical Reactions -The breaking down or building up of substances Reactants = what we start with Products = what we end with

  10. Example of a chemical equation Na + Cl NaCl The arrow is like an equals sign

  11. Chemical Reactions Chemical reactions require energy to start

  12. Chemical Reactions What does activate mean? (Think about activating your new cell phone) Activation Energy -is the energy needed to start a chemical reaction

  13. Catalase Catalase 2H2O + O2 2H2O2

  14. Goals for the Day • Be able to DRAW & describe what an enzyme is and what it does • Be able to define activation energy • Be able to name the things that affect enzyme activity & why they do so.

  15. Question of the Day What is Activation Energy?

  16. Substrate: Molecule that uses an enzyme Active Site : Folds in an enzyme where the substrate fits

  17. Energy comes in many forms!!!!!!!! Lets name some:

  18. ENERGY TIME Activation Energy is the energy needed to start a reaction ACTIVATION ENERGY Reactants Products

  19. A car has been running for a while you turn it off and open the hood. You touch the engine what happens? What does it feel like? The reactions need a high temperature to run. Why? What is heat? What does the heat represent in this situation?

  20. Reactions in your body also require a high temp. Does your body get as hot as the car engine? What would happen if your body was this hot?

  21. Enzymes Enzyme – A protein that acts as a catalyst Catalyst – a substance that speeds up a chemical reaction without being used up or destroyed. Enzymes are responsible for almost ALL chemical reactions in living things (Organisms).

  22. Enzymes How does an enzyme speed up a chemical reaction? ENZYMESspeed up a chemical reaction by lowering the activation energy ( )

  23. Enzymes ENERGY TIME ACTIVATION ENERGY ACTIVATION ENERGY with ENZYME Reactants Products ENZYMESspeed up a chemical reaction by lowering the activation energy (the amount of energy required to start a reaction)

  24. Enzymes Why do we put the enzyme above the arrow, and not on the side of the reactants or products? Example of a chemical equation Reactants Product AB A + B ENZYME

  25. ENZYMES Enzymes do not ever get used up. Enzymes do not die, but they can denature (become unusable, ruined, no longer work)

  26. Catalase Catalase 2H2O + O2 2H2O2

  27. ENZYMES • Three things that effect enzyme activity • Temperature • 2. pH (acidic or basic) • 3. Concentration (how many enzymes are working)

  28. Types of Enzymes AnabolicEnzyme – helps to build a molecule Example of reaction helped by anabolic enzymes:

  29. Enzymes CatabolicEnzyme – helps to break something down Example of reactions helped by catabolic enzymes:

  30. Assignment • Get a Enzyme Study Guide from the front of the room. • Complete the enzyme study guide using your notes & book if necessary. We will have a skills check on FRIDAY over enzymes • Once you complete your study guide finish your lab from yesterday (Tuesday 10/23) We will have time for questions tomorrow. • When you are finished with both of these things find something to work on quietly.

  31. Goals for the Day • Be able to DRAW & describe what an enzyme is and what it does • Be able to define activation energy • Be able to name the things that affect enzyme activity & why they do so.

  32. Question of the Day How does an ENZYME speed up a chemical reaction? By lowering the ________ _______

  33. Enzymes ENERGY TIME ACTIVATION ENERGY ACTIVATION ENERGY with ENZYME Reactants Products ENZYMESspeed up a chemical reaction by lowering the activation energy (the amount of energy required to start a reaction)

  34. Enzyme Lab • What was the substrate in our lab? • What was the enzyme in our lab? • Why is the enzyme written above the arrow?

  35. Assignments • Enzyme Study Guide • Lab Questions

  36. Goals for the Day • Be able to DRAW & describe what an enzyme is and what it does • Demonstrate what we’ve learned about enzymes

  37. Question of the Day Draw a catabolic enzyme reaction

  38. Enzymes CatabolicEnzyme – helps to break something down Example of reactions helped by catabolic enzymes:

  39. Jello Lab

  40. Substrate Molecule that uses an enzyme Active Site Folds in an enzyme where the substrate fits

  41. Goals for the Day • Be able to write the chemical equation for photosynthesis and identify the products and reactants and say what organisms do each process • Be able to say in what cell part these reactions take place, and which organisms have them.

  42. Question of the Day Photosynthesis & Cellular Respiration are involved in what NUTRIENT CYCLE? What are the other nutrient cycles we discussed?

  43. In the Carbon Cycle, what is unique about photosynthesis?

  44. In the Carbon Cycle, what is unique about photosynthesis?

  45. Chemical Equation for Cell Respiration • C6H12O6 + O2 CO2 + H2O + ATP • Label the reactants & Products

  46. Chemical Equation for Cell Respiration • C6H12O6 + O2 CO2 + H2O + ATP • What organisms Do cellular respiration? Why?

  47. Chemical Equation Photosynthesis • CO2 + H2O  C6H12O6 + O2 • Label the reactants & Products

  48. Chemical Equation Photosynthesis • CO2 + H2O  C6H12O6 + O2 • What types of organisms do photosynthesis?

  49. Cell Respiration & Photosynthesis In your notes: write out a relationship between the reactants & products of photosynthesis & cellular respiration

  50. TURNING SUN ENERGY INTO CHEMICAL ENERGY 8. In what structure does it happen? THE CHLOROPLAST

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