Biological systems need energy! To do work Chemical activities Growth Movement Reproduction Repair ?...
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Transcript of Biological systems need energy! To do work Chemical activities Growth Movement Reproduction Repair ?...
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=di
phosphate• ATP= tri
phosphate• ATP makes a
muscle work ADP in cell
ADP+PHigh
energyATP
-P aftercell work
ADP in cell Stored energy inglucose bonds + Respiration
= Release offood energy
Forms
ATP so cell can do work
+
P
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 versus Respiration
Burning:• Activated by
friction• Heat Energy• Light Energy• Carbon Dioxide• Oxygen
Respiration:• Activated by
enzymes• Heat Energy• ATP cell energy• Carbon Dioxide• Oxygen
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
Comparison of both ……..
PHTOSYNTHESIS
Make food
Give off O2
Use sunlight
Use CO2
RESPIRATION
Break apart food
Use oxygen
Make cell energy
Give off CO2
Equation Comparison:
6CO2 + 6H20 + sun = C6H1206 + 6O2
• Photosynthesis
• Respiration
C6H1206 + 6O2 = ATP+ 6CO2 +6H20