Cellular Respiration

1
Cellular Respiration

• Ch. 2 Sec. 2

2
How food becomes energy

• Eat the food
• Food is broken down into small molecules in
  digestive system
• Molecules enter blood stream

3
How food becomes energy

• Blood carries molecules to cells
• Cells do respiration to release energy from
  molecules

4
The Process

• Two steps
• First step takes place in cytoplasm
• Glucose broken into smaller parts
• Some energy released

5
The Process

• Second step takes place in mitochondria
• Small molecules broken down more
• Lots of energy released
• Requires oxygen

6
The Process

• Results
• ENERGY
• CO2
• H2O

7
The Equation

• C6H12O6 O2 ENERGY CO2 H2O

8
The Equation

• C6H12O6 O2 ENERGY CO2 H2O
• Balanced
• C6H12O6 6O2 ENERGY 6CO2 6H2O

9
Connections

• Photosynthesis and Cellular Respiration are
  opposite reactions
• The products of one are the ingredients of the
  other
• Create a cycle

10
Connections
11
Connections

• These processes power the food chain