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Biological systems need energy!. To do “work” Chemical activities Growth Movement Reproduction Repair ? Stored in CHEMICAL BONDS. Chemical Energy…………. Stored in? Food (Plant or Animal) Made by Producers in? Photosynthesis as? Glucose sugar Energy is released ?
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Biological systems need energy! • To do “work” • Chemical activities • Growth • Movement • Reproduction • Repair • ? Stored in • CHEMICAL BONDS
Chemical Energy………….. • Stored in? • Food (Plant or Animal) • Made by Producers in? • Photosynthesis as? • Glucose sugar • Energy is released? • Respiration, breaks • the chemical bonds
ATP cell energy Ch.9.1 • High energy molecule • Supplies cell energy • ATP cycles from ADP • by addition of a high energy phosphate • from the release of chemical energy • in respiration
ADP to ATP cycle ADP +P • ADP=di phosphate • ATP= tri phosphate • ATP makes a muscle work High energy ATP -P after cell work ADP in cell
Stored energy in glucose bonds ADP in cell + + Respiration P Forms ATP so cell can do work = Release of food energy
Light energy Ch.9.2 • Primary Energy Source for? • Photosynthesis • Used by • Plants • Chlorophyll
Photosynthesis . . . . • Plants make? • Require? 1. Sunlight 2. Chlorophyll 3. Water roots 4. ? gas
Plant Photosynthesis…….. • Makes Food • Uses • Sunlight • Carbon dioxide • Water • Chlorophyll
Chemical Equation >>>>>> Carbon dioxide + water +energy=food + oxygen (sugar) CO2 + H20 +sun = C6H1206 + O2
Cellular Respiration Ch. 9.3 • BOTH plants & animals breakdown food 1. Releases energy 2. Makes cell energy 3. Reverse of photosynthesis !
Burning: Activated by friction Heat Energy Light Energy Carbon Dioxide Oxygen Respiration: Activated by enzymes Heat Energy ATP cell energy Carbon Dioxide Oxygen Burning versus Respiration
Cellular Respiration………. • Breakdown of Food • Occurs in the Mitochondria of • Plant & Animal Cells • Produces? • ATP cell energy • CO2 gas waste
Respiration Equation >>>>> • Opposite of Photosynthesis food + oxygen = ATP+ CO2 +H20 C6H1206 + O2 = ATP+ CO2 +H20
PHTOSYNTHESIS Make food Give off O2 Use sunlight Use CO2 RESPIRATION Break apart food Use oxygen Make cell energy Give off CO2 Comparison of both ……..
Equation Comparison: 6CO2 + 6H20 + sun = C6H1206 + 6O2 • Photosynthesis • Respiration C6H1206 + 6O2 = ATP+ 6CO2 +6H20