1. Matter & Energy In Ecosystems
Notes:
Matter & Energy In Ecosystems

2. Our goal in this unit is to figure out how Matter + Energy are involved in organized systems that maintain Life!

3. (1) Matter & Cells
Matter = Atoms
Bonded Atoms = Molecules (Biomolecules)
Organized Biomolecules = Organelles & Cells
Cells = compartmentalized biomolecules

4. (2) Photosynthesis & Respiration
Sunlight + 6CO2 + 6H2O  C6H12O6 + 6O2
Respiration =
C6H12O6 + 6O2  6CO2 + 6H2O + ATP
CO2 , H2O , C6H12O6 , O2…
C – O – H = atoms = matter

5. (3) Transfer & Conversion
Transfer: Movement from one location to another.
Change of environment (Earth Location)
Change in organism (cellular compartment)
Conversion: Change in the form or type.

6. (4) Changes with Matter Transfer of Matter: Conversion of Matter:
Photosynthesis…
Air & Soil  Organelles & Air
Respiration…
Organelles & Air  Other Cell Areas & Air
Conversion of Matter:
Break Bonds—Rearrange Atoms—Form New Bonds
Change of State (Solid, Liquid, Gas)

8. (5) Changes with Energy Transfer of Energy: Conversion of Energy:
Photosynthesis…
Sunlight  Bonds of Glucose
Respiration…
Bonds of Glucose  Phosphate Bonds of ATP
Conversion of Energy:
Light/Kinetic Energy  Chemical Potential
Chemical Potential  Kinetic (Cell Processes)

10. (6) Thermodynamics The Laws: Energy cannot be created or destroyed.
If energy is not created or destroyed, it must be converted and transferred.
Every time energy is converted  Some is “lost”.

11. How does this
show the Laws of
Thermodynamics?