Cellular EnergyCatalyst:What does ATP stand for?Describe what cells need ATP for.What type of energy is ATP?Describe where the energy in ATP is stored.Explain how the energy in ATP can be released.
Write in complete sentences!Dont talk during the Catalyst!
AgendaBe all that you can be.Is it worth it? Let me work it Using ATP! REVIEW!PhotosynthesisBRAIN GAINEQ
AnnouncementsHomework: Complete worksheet from todayUnit Test: THURSDAY
Progress Report grades are in the computer.
ObjectivesWRITE THESE AT THE TOP OF YOUR NOTESBy the end of today, SWBATWrite the balanced equation for photosynthesisExplain the role of water, carbon dioxide, sugar, and sunlight in photosynthesis
Cellular Energy Key Point #1: Cells need energy in the form of ATP to do workIf energy is not in the form of ATP, then it must be changed into ATP before a cell can use itATP is the form of energy that lets cells do what they wantCells need ATP to grow, Muscle cells need ATP to contract, Brain cells need ATP to think, etc.
How ATP WorksATP = adenosine triphosphateThe energy of ATP is stored in the bonds of the phosphate moleculesChemical energy = energy stored in chemical bondsBreak off the last phosphate, and energy is releasedBecomes ADP
Chemical Reactions Key Point #1: Chemical reactions REARRANGE reactants into products.Reactants = Materials you START with in a chemical reaction.Products = Materials you FINISH with in a chemical reaction.
Photosynthesis is a specific chemical reaction that, using energy from the sun, rearranges its reactants into its products.PHOTOSYNTHESISis a CHEMICAL REACTION
PhotosynthesisKey Point #2: Photosynthesis converts solar energy from the Sun into chemical energy in glucose.Glucose = a type of sugarHappens in the chloroplastsPlant cells only
The EquationWhat do plants need to grow?Water, carbon dioxide, sunlightWhat is made by photosynthesis?Glucose
The EquationKey Point #3: The reactants of photosynthesis are carbon dioxide, water, and sunlight. The products are glucose and oxygen.Carbon dioxide = CO2Water = H2OGlucose = C6H12O6Oxygen = O2
UnbalancedCO2 + H2O + sun C6H12O6 + O2
BALANCED!6CO2 + 6H2O + sun C6H12O6 + 6O2REACTANTSPRODUCTS
PracticeGroups.White boards.60 seconds.
PracticeWhy do cells need energy?
PracticeCells use energy in the form of ______.
PracticeWhat type of energy does ATP have?
PracticeWhere is the energy in ATP stored?
PracticeHow is the energy in ATP released?
PracticeWhat happens in photosynthesis?(Sum it up.)
PracticeWhere does photosynthesis occur?
PracticeWhat type of cells do photosynthesis?
PracticeWhere does photosynthesis occur?
PracticeWhy cant cells stop after photosynthesis, and just use sugar for energy?
Independent PracticeWork hard,get smart.
ATP Key Point Wrap-UpKey Point #1: Cells need energy in the form of ATP to do work
Photosynthesis Key Point Wrap-UpKey Point #1: Chemical reactions REARRANGE reactants into products.Key Point #2: Photosynthesis converts solar energy from the sun into chemical energy in glucose.Key Point #3: The reactants of photosynthesis are carbon dioxide, water, and sunlight. The products are glucose and oxygen.
Below is the unbalanced equation for photosynthesis. Balance it.CO2 + H2O + sunlight C6H12O6 + O2
What are the reactants in photosynthesis?What are the products in photosynthesis?Write in complete sentences!Dont talk during the Exit Question!
***Transition 1: Come up with some examples of what cells do (heart-pump blood, muscles-contract, brain-think, root cells-absorb water, bacteria-cause disease or other more helpful things)Transition 2: Its like if someone handed me a bunch of diamonds. Great! Except I cant use them at the grocery store to get what I want (food). I need to convert them into money, first.*Adenosine = adenine + ribose (blue and pink)Triphosphate = THREE phosphate molecules!
Chemical energy is first type of energy that the students need to know. Chemical energy is stored in the bonds that hold atoms together. Depending on your students backgrounds in integrated science, this may take some time.
MINI DEMOYou could get three students together and have them lock arms. Explain that they are stronger as three. But when you release one, then it is not as strong because energy has been released.*Start with the fact that chemical reactions are all about rearranging things. Im not going to mention the law of conservation of mass, but Im going to try to get the point across.
Tie this back into the fact that photosynthesis -- a chemical reaction -- produces CHEMICAL energy.*Notice that after photosynthesis, we STILL do not have a useable form of energy! Cannot use sugar directly! *This is the meat and potatoes, using words first before the symbols.
CFUs. From yesterday, who remembers: what type of energy is sunlight? What type of energy is glucose? In what organelle does this process take place? In what type of cell does this process take place? *This is the meat and potatoes, using words first before the symbols.
CFUs. From yesterday, who remembers: what type of energy is sunlight? What type of energy is glucose? In what organelle does this process take place? In what type of cell does this process take place? *Wait a second look how huge glucose is! How could we make glucose from CO2 and H2O? That doesnt make any sense!*Oh, NOW it works. Have them write down the balanced equation. Photosynthesis: 6CO2 + 6H2O + sunlight --> C6H12O6 + 6O2
Why do we need the sunlight? Well, that is what provides the energy to move everything around, and break/create all those chemical bonds.
You should spend the bulk of your time on this slide.***