Presentation on theme: "Autotrophs vs Heterotrophs ATP Photosynthesis Cellular Respiration"— Presentation transcript:
1 Autotrophs vs Heterotrophs ATP Photosynthesis Cellular Respiration Energy and LifeAutotrophs vs HeterotrophsATPPhotosynthesisCellular Respiration
2 Autotrophic Organisms Use light energy to make their own foodProvide ULTIMATE SOURCE OF ENERGY for all living thingsAll plants, some Protists, some bacteria
3 Heterotrophic Organisms CANNOT use light energy to make foodObtain food energy by CONSUMING their foodAnimals, fungi, protists
4 ATP and ADP: Chemical energy for cells Adenosine TriPhosphateHow many phosphates in ATP?3; “Tri” means 3!Main source of cell’s energy“Fully charged” batteryEnergy stored in BONDS btw. phosphates
5 ATP and ADP: Chemical energy for cells Adenosine DiPhosphateHow many phosphates in ADP?2; “Di” means 2!ADP becomes ATP by adding a P“Half-charged” battery
6 ATP Cycle http://www.youtube.com/watch?v=Lx9GklK0xQg&feature=related Energy released from ATP when it loses a phosphate (use the battery)ATP ADP + ENERGYEnergy (FROM BREAKING DOWN GLUCOSE) is used to add a phosphate to make ATP from ADP (charge the battery)ADP ATPLOSE A PHOSPHATEENERGY + PHOSPHATE
7 Photosynthesis: The basics Using light (photo) to make (synthesis) glucoseOccurs in autotrophsIn which organelle?ChloroplastsPigment:Substance that has the ability to absorb light wavesWhat pigment is involved in photosynthesis?Chlorophyll
8 Photosynthesis: Chlorophyll Sun emits energy in different wavelengthsThe shorter the wavelength, the more energy it hasAccording to chart, which wavelength is shortest?VIOLET!Chlorophyll ABSORBS violet, and REFLECTS green!
9 Photosynthesis: The Reaction What reactants are needed for photosynthesis to occur?Water, CO2, sunlight energyWhat are the products of photosynthesis?Glucose and O2The Formula:H2O + CO C6H12O6 + O2(WATER) + (CARBON DIOXIDE) (GLUCOSE) + (OXYGEN)LIGHT ENERGY
10 Photosynthesis: Guard Cells Guard cells are located on the bottom of leavesGuard cells regulate gases and water moving in and out of the leafWhen guard cells are open:Carbon dioxide can move in freelyOxygen can move out freelyWater can exit the leaf, without the leaf drying upDuring humid conditionsWhen guard cells are closed:Photosynthesis rates slow downWater is kept in the leaf, to prevent water lossDuring dry conditions
12 Photosynthesis: The Song Sung to “Brother John”Carbon Dioxide (Carbon Dioxide)Add water and light (Add water and light)Then we photosynthesize (Then we photosynthesize)Glucose and oxygen (Glucose and oxygen)
13 Cellular Respiration: The basics Breaking down glucose to make ATPOccurs in autotrophs AND heterotrophs (all living things need to make ATP!)In which organelle?Mitochondria!Occurs in different pathwaysDepends on presence of Oxygen
14 Cellular Respiration: Aerobic Occurs in mitochondria in the presence of oxygenWhat are the reactants?Glucose (C6H12O6) and Oxygen (O2)The process:Starts with ADP already in cellsEnergy released from glucose attaches a phosphate to make ATP!What are the end products?32 ATP (energy), CO2, H2O
15 Cellular Respiration: The Reaction C6H12O6 + O ATP + CO2 + H2O(GLUCOSE) + (OXYGEN) (ENERGY) + (CARBON DIOXIDE) + (WATER)
16 Cellular Respiration: The Song Sung to “Row, Row, Row Your Boat”Res-Res-RespirationUses OxygenTo breakdown Glucose to make ATPAnd Carbon Dioxide
17 Cellular Respiration: Anaerobic What if there is a lack of oxygen?Can you think of times when you aren’t getting enough oxygen?During exercise!Occurs in cytoplasm instead of mitochondriaGLUCOSE 2 PYRUVIC ACID 2 LACTIC ACIDCalled FERMENTATIONAnimals = Produce Lactic AcidPlants = Produce AlcoholResults in much less energy produced!
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